Marvin,

Indeed it is complaining about an XML that cannot be parsed:

[Tue Aug 27 13:17:09 2013] [error] [client 127.0.0.1] MOD_AUTH_CAS: Error 
parsing XML content (Internal error), referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html

Here is the full log output: 

[Tue Aug 27 13:16:19 2013] [info] Loading certificate & private key of 
SSL-aware server
[Tue Aug 27 13:16:20 2013] [info] Configuring server for SSL protocol
[Tue Aug 27 13:16:20 2013] [warn] RSA server certificate CommonName (CN) `mint' 
does NOT match server name!?
[Tue Aug 27 13:16:20 2013] [debug] mod_auth_cas.c(2409): entering 
check_vhost_config()
[Tue Aug 27 13:16:20 2013] [info] Loading certificate & private key of 
SSL-aware server
[Tue Aug 27 13:16:20 2013] [info] Configuring server for SSL protocol
[Tue Aug 27 13:16:20 2013] [warn] RSA server certificate CommonName (CN) `mint' 
does NOT match server name!?
[Tue Aug 27 13:16:20 2013] [debug] mod_auth_cas.c(2409): entering 
check_vhost_config()
[Tue Aug 27 13:16:20 2013] [debug] proxy_util.c(1818): proxy: grabbed 
scoreboard slot 0 in child 10319 for worker 
http://steppra1-linux-mint:9558/best_buy/
[Tue Aug 27 13:16:20 2013] [debug] proxy_util.c(1914): proxy: initialized 
worker 0 in child 10319 for (steppra1-linux-mint) min=0 max=25 smax=25
[Tue Aug 27 13:16:20 2013] [debug] proxy_util.c(1818): proxy: grabbed 
scoreboard slot 1 in child 10319 for worker http://build.local.apps/
[Tue Aug 27 13:16:20 2013] [debug] proxy_util.c(1914): proxy: initialized 
worker 1 in child 10319 for (build.local.apps) min=0 max=25 smax=25
[Tue Aug 27 13:16:20 2013] [debug] proxy_util.c(1818): proxy: grabbed 
scoreboard slot 2 in child 10319 for worker http://steppra1-linux-mint:9558/
[Tue Aug 27 13:16:20 2013] [debug] proxy_util.c(1914): proxy: initialized 
worker 2 in child 10319 for (steppra1-linux-mint) min=0 max=25 smax=25
[Tue Aug 27 13:16:20 2013] [debug] proxy_util.c(1818): proxy: grabbed 
scoreboard slot 3 in child 10319 for worker https://steppra1-linux-mint:8443/cas
[Tue Aug 27 13:16:20 2013] [debug] proxy_util.c(1914): proxy: initialized 
worker 3 in child 10319 for (steppra1-linux-mint) min=0 max=25 smax=25
[Tue Aug 27 13:16:20 2013] [debug] proxy_util.c(1818): proxy: grabbed 
scoreboard slot 0 in child 10320 for worker 
http://steppra1-linux-mint:9558/best_buy/
[Tue Aug 27 13:16:20 2013] [debug] proxy_util.c(1837): proxy: worker 
http://steppra1-linux-mint:9558/best_buy/ already initialized
[Tue Aug 27 13:16:20 2013] [debug] proxy_util.c(1914): proxy: initialized 
worker 0 in child 10320 for (steppra1-linux-mint) min=0 max=25 smax=25
[Tue Aug 27 13:16:20 2013] [debug] proxy_util.c(1818): proxy: grabbed 
scoreboard slot 1 in child 10320 for worker http://build.local.apps/
[Tue Aug 27 13:16:20 2013] [debug] proxy_util.c(1837): proxy: worker 
http://build.local.apps/ already initialized
[Tue Aug 27 13:16:20 2013] [debug] proxy_util.c(1914): proxy: initialized 
worker 1 in child 10320 for (build.local.apps) min=0 max=25 smax=25
[Tue Aug 27 13:16:20 2013] [debug] proxy_util.c(1818): proxy: grabbed 
scoreboard slot 2 in child 10320 for worker http://steppra1-linux-mint:9558/
[Tue Aug 27 13:16:20 2013] [debug] proxy_util.c(1837): proxy: worker 
http://steppra1-linux-mint:9558/ already initialized
[Tue Aug 27 13:16:20 2013] [debug] proxy_util.c(1914): proxy: initialized 
worker 2 in child 10320 for (steppra1-linux-mint) min=0 max=25 smax=25
[Tue Aug 27 13:16:20 2013] [debug] proxy_util.c(1818): proxy: grabbed 
scoreboard slot 3 in child 10320 for worker https://steppra1-linux-mint:8443/cas
[Tue Aug 27 13:16:20 2013] [debug] proxy_util.c(1837): proxy: worker 
https://steppra1-linux-mint:8443/cas already initialized
[Tue Aug 27 13:16:20 2013] [debug] proxy_util.c(1914): proxy: initialized 
worker 3 in child 10320 for (steppra1-linux-mint) min=0 max=25 smax=25
[Tue Aug 27 13:16:53 2013] [info] [client 127.0.0.1] Connection to child 2 
established (server dev.local.fe2:443)
[Tue Aug 27 13:16:53 2013] [info] Seeding PRNG with 656 bytes of entropy
[Tue Aug 27 13:16:53 2013] [info] Connection: Client IP: 127.0.0.1, Protocol: 
TLSv1, Cipher: DHE-RSA-CAMELLIA256-SHA (256/256 bits)
[Tue Aug 27 13:16:53 2013] [info] Initial (No.1) HTTPS request received for 
child 2 (server dev.local.fe2:443)
[Tue Aug 27 13:16:53 2013] [debug] mod_proxy_http.c(56): proxy: HTTP: 
canonicalising URL //steppra1-linux-mint:8443/cas/logout
[Tue Aug 27 13:16:53 2013] [debug] proxy_util.c(1506): [client 127.0.0.1] 
proxy: https: found worker https://steppra1-linux-mint:8443/cas for 
https://steppra1-linux-mint:8443/cas/logout
[Tue Aug 27 13:16:53 2013] [debug] mod_proxy.c(1020): Running scheme https 
handler (attempt 0)
[Tue Aug 27 13:16:53 2013] [debug] mod_proxy_http.c(1973): proxy: HTTP: serving 
URL https://steppra1-linux-mint:8443/cas/logout
[Tue Aug 27 13:16:53 2013] [debug] proxy_util.c(2011): proxy: HTTPS: has 
acquired connection for (steppra1-linux-mint)
[Tue Aug 27 13:16:53 2013] [debug] proxy_util.c(2067): proxy: connecting 
https://steppra1-linux-mint:8443/cas/logout to steppra1-linux-mint:8443
[Tue Aug 27 13:16:53 2013] [debug] proxy_util.c(2193): proxy: connected 
/cas/logout to steppra1-linux-mint:8443
[Tue Aug 27 13:16:53 2013] [debug] proxy_util.c(2444): proxy: HTTPS: fam 2 
socket created to connect to steppra1-linux-mint
[Tue Aug 27 13:16:53 2013] [debug] proxy_util.c(2576): proxy: HTTPS: connection 
complete to 127.0.0.1:8443 (steppra1-linux-mint)
[Tue Aug 27 13:16:53 2013] [info] [client 127.0.0.1] Connection to child 0 
established (server dev.local.fe2:443)
[Tue Aug 27 13:16:53 2013] [info] Seeding PRNG with 656 bytes of entropy
[Tue Aug 27 13:16:53 2013] [info] Connection: Client IP: 127.0.0.1, Protocol: 
TLSv1.1, Cipher: ECDHE-RSA-DES-CBC3-SHA (168/168 bits)
[Tue Aug 27 13:16:54 2013] [debug] mod_proxy_http.c(1743): proxy: start body 
send
[Tue Aug 27 13:16:54 2013] [debug] mod_headers.c(756): headers: 
ap_headers_output_filter()
[Tue Aug 27 13:16:54 2013] [debug] mod_deflate.c(615): [client 127.0.0.1] Zlib: 
Compressed 2026 to 845 : URL /cas/logout
[Tue Aug 27 13:16:54 2013] [debug] mod_proxy_http.c(1847): proxy: end body send
[Tue Aug 27 13:16:54 2013] [debug] proxy_util.c(2029): proxy: HTTPS: has 
released connection for (steppra1-linux-mint)
[Tue Aug 27 13:16:59 2013] [info] [client 127.0.0.1] (70007)The timeout 
specified has expired: SSL input filter read failed.
[Tue Aug 27 13:16:59 2013] [info] [client 127.0.0.1] Connection closed to child 
2 with standard shutdown (server dev.local.fe2:443)
[Tue Aug 27 13:17:01 2013] [info] [client 127.0.0.1] Connection to child 66 
established (server dev.local.fe2:443)
[Tue Aug 27 13:17:01 2013] [info] Seeding PRNG with 656 bytes of entropy
[Tue Aug 27 13:17:01 2013] [info] [client 127.0.0.1] Connection to child 1 
established (server dev.local.fe2:443)
[Tue Aug 27 13:17:01 2013] [info] Seeding PRNG with 656 bytes of entropy
[Tue Aug 27 13:17:01 2013] [info] Connection: Client IP: 127.0.0.1, Protocol: 
TLSv1, Cipher: DHE-RSA-CAMELLIA256-SHA (256/256 bits)
[Tue Aug 27 13:17:01 2013] [info] Connection: Client IP: 127.0.0.1, Protocol: 
TLSv1, Cipher: DHE-RSA-CAMELLIA256-SHA (256/256 bits)
[Tue Aug 27 13:17:01 2013] [info] Initial (No.1) HTTPS request received for 
child 1 (server dev.local.fe2:443)
[Tue Aug 27 13:17:01 2013] [debug] mod_auth_cas.c(1958): [client 127.0.0.1] 
Entering cas_authenticate()
[Tue Aug 27 13:17:01 2013] [debug] mod_auth_cas.c(578): [client 127.0.0.1] CAS 
Service 'https%3a%2f%2fdev.local.fe2%2ffe2.html'
[Tue Aug 27 13:17:01 2013] [debug] mod_auth_cas.c(526): [client 127.0.0.1] 
entering getCASLoginURL()
[Tue Aug 27 13:17:01 2013] [debug] mod_auth_cas.c(503): [client 127.0.0.1] 
entering getCASGateway()
[Tue Aug 27 13:17:01 2013] [debug] mod_auth_cas.c(593): [client 127.0.0.1] 
entering redirectRequest()
[Tue Aug 27 13:17:01 2013] [debug] mod_auth_cas.c(605): [client 127.0.0.1] 
Adding outgoing header: Location: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:01 2013] [debug] mod_deflate.c(615): [client 127.0.0.1] Zlib: 
Compressed 342 to 247 : URL /fe2.html
[Tue Aug 27 13:17:01 2013] [info] Subsequent (No.2) HTTPS request received for 
child 1 (server dev.local.fe2:443)
[Tue Aug 27 13:17:01 2013] [debug] mod_proxy_http.c(56): proxy: HTTP: 
canonicalising URL //steppra1-linux-mint:8443/cas/login
[Tue Aug 27 13:17:01 2013] [debug] proxy_util.c(1506): [client 127.0.0.1] 
proxy: https: found worker https://steppra1-linux-mint:8443/cas for 
https://steppra1-linux-mint:8443/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:01 2013] [debug] mod_proxy.c(1020): Running scheme https 
handler (attempt 0)
[Tue Aug 27 13:17:01 2013] [debug] mod_proxy_http.c(1973): proxy: HTTP: serving 
URL 
https://steppra1-linux-mint:8443/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:01 2013] [debug] proxy_util.c(2011): proxy: HTTPS: has 
acquired connection for (steppra1-linux-mint)
[Tue Aug 27 13:17:01 2013] [debug] proxy_util.c(2067): proxy: connecting 
https://steppra1-linux-mint:8443/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
 to steppra1-linux-mint:8443
[Tue Aug 27 13:17:01 2013] [debug] proxy_util.c(2193): proxy: connected 
/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html to 
steppra1-linux-mint:8443
[Tue Aug 27 13:17:01 2013] [debug] mod_proxy_http.c(1743): proxy: start body 
send
[Tue Aug 27 13:17:01 2013] [debug] mod_headers.c(756): headers: 
ap_headers_output_filter()
[Tue Aug 27 13:17:01 2013] [debug] mod_deflate.c(615): [client 127.0.0.1] Zlib: 
Compressed 6882 to 1829 : URL /cas/login
[Tue Aug 27 13:17:01 2013] [debug] mod_proxy_http.c(1847): proxy: end body send
[Tue Aug 27 13:17:01 2013] [debug] proxy_util.c(2029): proxy: HTTPS: has 
released connection for (steppra1-linux-mint)
[Tue Aug 27 13:17:06 2013] [info] Subsequent (No.3) HTTPS request received for 
child 1 (server dev.local.fe2:443)
[Tue Aug 27 13:17:06 2013] [debug] mod_proxy_http.c(56): proxy: HTTP: 
canonicalising URL //steppra1-linux-mint:8443/cas/login
[Tue Aug 27 13:17:06 2013] [debug] proxy_util.c(1506): [client 127.0.0.1] 
proxy: https: found worker https://steppra1-linux-mint:8443/cas for 
https://steppra1-linux-mint:8443/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html,
 referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:06 2013] [debug] mod_proxy.c(1020): Running scheme https 
handler (attempt 0)
[Tue Aug 27 13:17:06 2013] [debug] mod_proxy_http.c(1973): proxy: HTTP: serving 
URL 
https://steppra1-linux-mint:8443/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:06 2013] [debug] proxy_util.c(2011): proxy: HTTPS: has 
acquired connection for (steppra1-linux-mint)
[Tue Aug 27 13:17:06 2013] [debug] proxy_util.c(2067): proxy: connecting 
https://steppra1-linux-mint:8443/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
 to steppra1-linux-mint:8443
[Tue Aug 27 13:17:06 2013] [debug] proxy_util.c(2193): proxy: connected 
/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html to 
steppra1-linux-mint:8443
[Tue Aug 27 13:17:06 2013] [info] [client 127.0.0.1] Connection closed to child 
66 with standard shutdown (server dev.local.fe2:443)
[Tue Aug 27 13:17:09 2013] [debug] mod_proxy_http.c(1743): proxy: start body 
send
[Tue Aug 27 13:17:09 2013] [debug] mod_headers.c(756): headers: 
ap_headers_output_filter()
[Tue Aug 27 13:17:09 2013] [debug] mod_proxy_http.c(1847): proxy: end body send
[Tue Aug 27 13:17:09 2013] [debug] proxy_util.c(2029): proxy: HTTPS: has 
released connection for (steppra1-linux-mint)
[Tue Aug 27 13:17:09 2013] [info] Subsequent (No.4) HTTPS request received for 
child 1 (server dev.local.fe2:443)
[Tue Aug 27 13:17:09 2013] [debug] mod_proxy_http.c(56): proxy: HTTP: 
canonicalising URL //steppra1-linux-mint:8443/cas/login
[Tue Aug 27 13:17:09 2013] [debug] proxy_util.c(1506): [client 127.0.0.1] 
proxy: https: found worker https://steppra1-linux-mint:8443/cas for 
https://steppra1-linux-mint:8443/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html,
 referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] mod_proxy.c(1020): Running scheme https 
handler (attempt 0)
[Tue Aug 27 13:17:09 2013] [debug] mod_proxy_http.c(1973): proxy: HTTP: serving 
URL 
https://steppra1-linux-mint:8443/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] proxy_util.c(2011): proxy: HTTPS: has 
acquired connection for (steppra1-linux-mint)
[Tue Aug 27 13:17:09 2013] [debug] proxy_util.c(2067): proxy: connecting 
https://steppra1-linux-mint:8443/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
 to steppra1-linux-mint:8443
[Tue Aug 27 13:17:09 2013] [debug] proxy_util.c(2193): proxy: connected 
/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html to 
steppra1-linux-mint:8443
[Tue Aug 27 13:17:09 2013] [debug] mod_proxy_http.c(1743): proxy: start body 
send
[Tue Aug 27 13:17:09 2013] [debug] mod_headers.c(756): headers: 
ap_headers_output_filter()
[Tue Aug 27 13:17:09 2013] [debug] mod_proxy_http.c(1847): proxy: end body send
[Tue Aug 27 13:17:09 2013] [debug] proxy_util.c(2029): proxy: HTTPS: has 
released connection for (steppra1-linux-mint)
[Tue Aug 27 13:17:09 2013] [info] Subsequent (No.5) HTTPS request received for 
child 1 (server dev.local.fe2:443)
[Tue Aug 27 13:17:09 2013] [debug] mod_auth_cas.c(1958): [client 127.0.0.1] 
Entering cas_authenticate(), referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] mod_auth_cas.c(648): [client 127.0.0.1] 
Modified r->args (now ''), referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] mod_auth_cas.c(1660): [client 127.0.0.1] 
entering getResponseFromServer(), referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] mod_auth_cas.c(578): [client 127.0.0.1] CAS 
Service 'https%3a%2f%2fdev.local.fe2%2ffe2.html', referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [info] [client 127.0.0.1] Connection to child 67 
established (server dev.local.fe2:443)
[Tue Aug 27 13:17:09 2013] [info] Seeding PRNG with 656 bytes of entropy
[Tue Aug 27 13:17:09 2013] [info] Connection: Client IP: 127.0.0.1, Protocol: 
TLSv1.2, Cipher: DHE-RSA-AES128-SHA (128/128 bits)
[Tue Aug 27 13:17:09 2013] [info] Initial (No.1) HTTPS request received for 
child 67 (server dev.local.fe2:443)
[Tue Aug 27 13:17:09 2013] [debug] mod_proxy_http.c(56): proxy: HTTP: 
canonicalising URL //steppra1-linux-mint:8443/cas/samlValidate
[Tue Aug 27 13:17:09 2013] [debug] proxy_util.c(1506): [client 127.0.0.1] 
proxy: https: found worker https://steppra1-linux-mint:8443/cas for 
https://steppra1-linux-mint:8443/cas/samlValidate?TARGET=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] mod_proxy.c(1020): Running scheme https 
handler (attempt 0)
[Tue Aug 27 13:17:09 2013] [debug] mod_proxy_http.c(1973): proxy: HTTP: serving 
URL 
https://steppra1-linux-mint:8443/cas/samlValidate?TARGET=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] proxy_util.c(2011): proxy: HTTPS: has 
acquired connection for (steppra1-linux-mint)
[Tue Aug 27 13:17:09 2013] [debug] proxy_util.c(2067): proxy: connecting 
https://steppra1-linux-mint:8443/cas/samlValidate?TARGET=https%3a%2f%2fdev.local.fe2%2ffe2.html
 to steppra1-linux-mint:8443
[Tue Aug 27 13:17:09 2013] [debug] proxy_util.c(2193): proxy: connected 
/cas/samlValidate?TARGET=https%3a%2f%2fdev.local.fe2%2ffe2.html to 
steppra1-linux-mint:8443
[Tue Aug 27 13:17:09 2013] [debug] proxy_util.c(2444): proxy: HTTPS: fam 2 
socket created to connect to steppra1-linux-mint
[Tue Aug 27 13:17:09 2013] [debug] proxy_util.c(2576): proxy: HTTPS: connection 
complete to 127.0.0.1:8443 (steppra1-linux-mint)
[Tue Aug 27 13:17:09 2013] [info] [client 127.0.0.1] Connection to child 0 
established (server dev.local.fe2:443)
[Tue Aug 27 13:17:09 2013] [info] Seeding PRNG with 656 bytes of entropy
[Tue Aug 27 13:17:09 2013] [info] Connection: Client IP: 127.0.0.1, Protocol: 
TLSv1.1, Cipher: ECDHE-RSA-DES-CBC3-SHA (168/168 bits)
[Tue Aug 27 13:17:09 2013] [debug] mod_proxy_http.c(1743): proxy: start body 
send
[Tue Aug 27 13:17:09 2013] [debug] mod_headers.c(756): headers: 
ap_headers_output_filter()
[Tue Aug 27 13:17:09 2013] [debug] mod_proxy_http.c(1847): proxy: end body send
[Tue Aug 27 13:17:09 2013] [debug] proxy_util.c(2029): proxy: HTTPS: has 
released connection for (steppra1-linux-mint)
[Tue Aug 27 13:17:09 2013] [debug] mod_auth_cas.c(1738): [client 127.0.0.1] 
Validation response: <?xml version="1.0" encoding="UTF-8"?><SOAP-ENV:Envelope 
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/";><SOAP-ENV:Body><saml1p:Response
 xmlns:saml1p="urn:oasis:names:tc:SAML:1.0:protocol" 
IssueInstant="2013-08-27T11:17:09.573Z" MajorVersion="1" MinorVersion="1" 
Recipient="https://dev.local.fe2/fe2.html"; 
ResponseID="_f94a5f372491aaefc2245a15fe2c9e33"><saml1p:Status><saml1p:StatusCode
 Value="saml1p:Success"/></saml1p:Status><saml1:Assertion 
xmlns:saml1="urn:oasis:names:tc:SAML:1.0:assertion" 
AssertionID="_5578671330d800acff947bd5204631c5" 
IssueInstant="2013-08-27T11:17:09.573Z" Issuer="localhost" MajorVersion="1" 
MinorVersion="1"><saml1:Conditions NotBefore="2013-08-27T11:17:09.573Z" 
NotOnOrAfter="2013-08-27T11:17:39.573Z"><saml1:AudienceRestrictionCondition><saml1:Audience>https://dev.local.fe2/fe2.html</saml1:Audience></saml1:AudienceRestrictionCondition></saml1:Conditions><saml1:AuthenticationStatement
 AuthenticationInstant="2013-08-27T11:17:09.345Z" 
AuthenticationMethod="urn:oasis:names:tc:SAML:1.0:am:password"><saml1:Subject><saml1:NameIdentifier>steppra1</saml1:NameIdentifier><saml1:SubjectConfirmation><saml1:ConfirmationMethod>urn:oasis:names:tc:SAML:1.0:cm:artifact</saml1:ConfirmationMethod></saml1:SubjectConfirmation></saml1:Subject></saml1:AuthenticationStatement></saml1:Assertion></saml1p:Response></SOAP-ENV:Body></SOAP-ENV:Envelope>,
 referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [info] [client 127.0.0.1] Connection closed to child 
67 with standard shutdown (server dev.local.fe2:443)
[Tue Aug 27 13:17:09 2013] [debug] mod_auth_cas.c(1360): [client 127.0.0.1] 
entering isValidCASTicket(), referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] mod_auth_cas.c(1366): [client 127.0.0.1] 
MOD_AUTH_CAS: response = <?xml version="1.0" 
encoding="UTF-8"?><SOAP-ENV:Envelope 
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/";><SOAP-ENV:Body><saml1p:Response
 xmlns:saml1p="urn:oasis:names:tc:SAML:1.0:protocol" 
IssueInstant="2013-08-27T11:17:09.573Z" MajorVersion="1" MinorVersion="1" 
Recipient="https://dev.local.fe2/fe2.html"; 
ResponseID="_f94a5f372491aaefc2245a15fe2c9e33"><saml1p:Status><saml1p:StatusCode
 Value="saml1p:Success"/></saml1p:Status><saml1:Assertion 
xmlns:saml1="urn:oasis:names:tc:SAML:1.0:assertion" 
AssertionID="_5578671330d800acff947bd5204631c5" 
IssueInstant="2013-08-27T11:17:09.573Z" Issuer="localhost" MajorVersion="1" 
MinorVersion="1"><saml1:Conditions NotBefore="2013-08-27T11:17:09.573Z" 
NotOnOrAfter="2013-08-27T11:17:39.573Z"><saml1:AudienceRestrictionCondition><saml1:Audience>https://dev.local.fe2/fe2.html</saml1:Audience></saml1:AudienceRestrictionCondition></saml1:Conditions><saml1:AuthenticationStatement
 AuthenticationInstant="2013-08-27T11:17:09.345Z" 
AuthenticationMethod="urn:oasis:names:tc:SAML:1.0:am:password"><saml1:Subject><saml1:NameIdentifier>steppra1</saml1:NameIdentifier><saml1:SubjectConfirmation><saml1:ConfirmationMethod>urn:oasis:names:tc:SAML:1.0:cm:artifact</saml1:ConfirmationMethod></saml1:SubjectConfirmation></saml1:Subject></saml1:AuthenticationStatement></saml1:Assertion></saml1p:Response></SOAP-ENV:Body></SOAP-ENV:Envelope>,
 referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [info] [client 127.0.0.1] Successfully authenticated 
ticket ST-2-L3XuP9nifz4q1wapuxDn-steppra1-linux-mint for user (null), referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] mod_auth_cas.c(1192): [client 127.0.0.1] 
entering createCASCookie(), referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] mod_auth_cas.c(1013): [client 127.0.0.1] 
entering CASCleanCache(), referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] mod_auth_cas.c(1055): [client 127.0.0.1] 
Beginning cache clean, referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] mod_auth_cas.c(1073): [client 127.0.0.1] 
Processing cache file 'd8e0f5fce75b88162b4243a787868971', referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] mod_auth_cas.c(872): [client 127.0.0.1] 
entering readCASCacheFile(), referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [error] [client 127.0.0.1] MOD_AUTH_CAS: Error 
parsing XML content (Internal error), referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] mod_auth_cas.c(1089): [client 127.0.0.1] 
Removing corrupt cache entry 'd8e0f5fce75b88162b4243a787868971', referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] mod_auth_cas.c(1332): [client 127.0.0.1] 
entering deleteCASCacheFile(), referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] mod_auth_cas.c(872): [client 127.0.0.1] 
entering readCASCacheFile(), referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [error] [client 127.0.0.1] MOD_AUTH_CAS: Error 
parsing XML content (Internal error), referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] mod_auth_cas.c(1111): [client 127.0.0.1] 
entering writeCASCacheEntry(), referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [info] [client 127.0.0.1] Connection to child 68 
established (server dev.local.fe2:443)
[Tue Aug 27 13:17:09 2013] [info] Seeding PRNG with 656 bytes of entropy
[Tue Aug 27 13:17:09 2013] [info] Connection: Client IP: 127.0.0.1, Protocol: 
TLSv1, Cipher: DHE-RSA-CAMELLIA256-SHA (256/256 bits)
[Tue Aug 27 13:17:09 2013] [info] Initial (No.1) HTTPS request received for 
child 68 (server dev.local.fe2:443)
[Tue Aug 27 13:17:09 2013] [debug] mod_auth_cas.c(1958): [client 127.0.0.1] 
Entering cas_authenticate(), referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] mod_auth_cas.c(648): [client 127.0.0.1] 
Modified r->args (now ''), referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] mod_auth_cas.c(1660): [client 127.0.0.1] 
entering getResponseFromServer(), referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] mod_auth_cas.c(578): [client 127.0.0.1] CAS 
Service 'https%3a%2f%2fdev.local.fe2%2ffe2.html', referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [info] [client 127.0.0.1] Connection to child 65 
established (server dev.local.fe2:443)
[Tue Aug 27 13:17:09 2013] [info] Seeding PRNG with 656 bytes of entropy
[Tue Aug 27 13:17:09 2013] [info] Connection: Client IP: 127.0.0.1, Protocol: 
TLSv1.2, Cipher: DHE-RSA-AES128-SHA (128/128 bits)
[Tue Aug 27 13:17:09 2013] [info] Initial (No.1) HTTPS request received for 
child 65 (server dev.local.fe2:443)
[Tue Aug 27 13:17:09 2013] [debug] mod_proxy_http.c(56): proxy: HTTP: 
canonicalising URL //steppra1-linux-mint:8443/cas/samlValidate
[Tue Aug 27 13:17:09 2013] [debug] proxy_util.c(1506): [client 127.0.0.1] 
proxy: https: found worker https://steppra1-linux-mint:8443/cas for 
https://steppra1-linux-mint:8443/cas/samlValidate?TARGET=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] mod_proxy.c(1020): Running scheme https 
handler (attempt 0)
[Tue Aug 27 13:17:09 2013] [debug] mod_proxy_http.c(1973): proxy: HTTP: serving 
URL 
https://steppra1-linux-mint:8443/cas/samlValidate?TARGET=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] proxy_util.c(2011): proxy: HTTPS: has 
acquired connection for (steppra1-linux-mint)
[Tue Aug 27 13:17:09 2013] [debug] proxy_util.c(2067): proxy: connecting 
https://steppra1-linux-mint:8443/cas/samlValidate?TARGET=https%3a%2f%2fdev.local.fe2%2ffe2.html
 to steppra1-linux-mint:8443
[Tue Aug 27 13:17:09 2013] [debug] proxy_util.c(2193): proxy: connected 
/cas/samlValidate?TARGET=https%3a%2f%2fdev.local.fe2%2ffe2.html to 
steppra1-linux-mint:8443
[Tue Aug 27 13:17:09 2013] [debug] mod_proxy_http.c(1743): proxy: start body 
send
[Tue Aug 27 13:17:09 2013] [debug] mod_headers.c(756): headers: 
ap_headers_output_filter()
[Tue Aug 27 13:17:09 2013] [debug] mod_proxy_http.c(1847): proxy: end body send
[Tue Aug 27 13:17:09 2013] [debug] proxy_util.c(2029): proxy: HTTPS: has 
released connection for (steppra1-linux-mint)
[Tue Aug 27 13:17:09 2013] [debug] mod_auth_cas.c(1738): [client 127.0.0.1] 
Validation response: <?xml version="1.0" encoding="UTF-8"?><SOAP-ENV:Envelope 
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/";><SOAP-ENV:Body><saml1p:Response
 xmlns:saml1p="urn:oasis:names:tc:SAML:1.0:protocol" 
IssueInstant="2013-08-27T11:17:09.744Z" MajorVersion="1" MinorVersion="1" 
Recipient="https://dev.local.fe2/fe2.html"; 
ResponseID="_27be6264766f8a0f44056825d49087ae"><saml1p:Status><saml1p:StatusCode
 Value="saml1p:RequestDenied"/><saml1p:StatusMessage>ticket 
'ST-2-L3XuP9nifz4q1wapuxDn-steppra1-linux-mint' not 
recognized</saml1p:StatusMessage></saml1p:Status></saml1p:Response></SOAP-ENV:Body></SOAP-ENV:Envelope>,
 referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [info] [client 127.0.0.1] Connection closed to child 
65 with standard shutdown (server dev.local.fe2:443)
[Tue Aug 27 13:17:09 2013] [debug] mod_auth_cas.c(1360): [client 127.0.0.1] 
entering isValidCASTicket(), referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] mod_auth_cas.c(1366): [client 127.0.0.1] 
MOD_AUTH_CAS: response = <?xml version="1.0" 
encoding="UTF-8"?><SOAP-ENV:Envelope 
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/";><SOAP-ENV:Body><saml1p:Response
 xmlns:saml1p="urn:oasis:names:tc:SAML:1.0:protocol" 
IssueInstant="2013-08-27T11:17:09.744Z" MajorVersion="1" MinorVersion="1" 
Recipient="https://dev.local.fe2/fe2.html"; 
ResponseID="_27be6264766f8a0f44056825d49087ae"><saml1p:Status><saml1p:StatusCode
 Value="saml1p:RequestDenied"/><saml1p:StatusMessage>ticket 
'ST-2-L3XuP9nifz4q1wapuxDn-steppra1-linux-mint' not 
recognized</saml1p:StatusMessage></saml1p:Status></saml1p:Response></SOAP-ENV:Body></SOAP-ENV:Envelope>,
 referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:09 2013] [debug] mod_deflate.c(615): [client 127.0.0.1] Zlib: 
Compressed 481 to 324 : URL /fe2.html, referer: 
https://dev.local.fe2/cas/login?service=https%3a%2f%2fdev.local.fe2%2ffe2.html
[Tue Aug 27 13:17:11 2013] [debug] proxy_util.c(1818): proxy: grabbed 
scoreboard slot 0 in child 10450 for worker 
http://steppra1-linux-mint:9558/best_buy/
[Tue Aug 27 13:17:11 2013] [debug] proxy_util.c(1837): proxy: worker 
http://steppra1-linux-mint:9558/best_buy/ already initialized
[Tue Aug 27 13:17:11 2013] [debug] proxy_util.c(1914): proxy: initialized 
worker 0 in child 10450 for (steppra1-linux-mint) min=0 max=25 smax=25
[Tue Aug 27 13:17:11 2013] [debug] proxy_util.c(1818): proxy: grabbed 
scoreboard slot 1 in child 10450 for worker http://build.local.apps/
[Tue Aug 27 13:17:11 2013] [debug] proxy_util.c(1837): proxy: worker 
http://build.local.apps/ already initialized
[Tue Aug 27 13:17:11 2013] [debug] proxy_util.c(1914): proxy: initialized 
worker 1 in child 10450 for (build.local.apps) min=0 max=25 smax=25
[Tue Aug 27 13:17:11 2013] [debug] proxy_util.c(1818): proxy: grabbed 
scoreboard slot 2 in child 10450 for worker http://steppra1-linux-mint:9558/
[Tue Aug 27 13:17:11 2013] [debug] proxy_util.c(1837): proxy: worker 
http://steppra1-linux-mint:9558/ already initialized
[Tue Aug 27 13:17:11 2013] [debug] proxy_util.c(1914): proxy: initialized 
worker 2 in child 10450 for (steppra1-linux-mint) min=0 max=25 smax=25
[Tue Aug 27 13:17:11 2013] [debug] proxy_util.c(1818): proxy: grabbed 
scoreboard slot 3 in child 10450 for worker https://steppra1-linux-mint:8443/cas
[Tue Aug 27 13:17:11 2013] [debug] proxy_util.c(1837): proxy: worker 
https://steppra1-linux-mint:8443/cas already initialized
[Tue Aug 27 13:17:11 2013] [debug] proxy_util.c(1914): proxy: initialized 
worker 3 in child 10450 for (steppra1-linux-mint) min=0 max=25 smax=25
[Tue Aug 27 13:17:14 2013] [info] [client 127.0.0.1] (70007)The timeout 
specified has expired: SSL input filter read failed.
[Tue Aug 27 13:17:14 2013] [info] [client 127.0.0.1] Connection closed to child 
68 with standard shutdown (server dev.local.fe2:443)


Ralf
________________________________________
From: Steppacher Ralf [[email protected]]
Sent: Tuesday, August 27, 2013 11:52
To: [email protected]
Subject: RE: [cas-user] SAML Ticket Validation

Marvin,

Re #1: Yes, I have not bothered yet with the attributes and what I need to do 
in order to release them As I cannot make the request succeed I figured I have 
no chance to verify that whatever I do to make the attributes available is 
working or not. But maybe that is what confuses mod_auth_cas or the SAML 
validation?

I will build and deploy your modified version of the module later today and 
report back.

Re #2: Indeed we can see an odd request for /favicon.ico that that is 
redirected via CAS. But not all the time. CSS and JS I don't see redirected. 
The CSS and JS that is in the log I posted is that of CAS itself. Is it not?


Thanks and regards
Ralf

________________________________________
From: Marvin Addison [[email protected]]
Sent: Monday, August 26, 2013 14:39
To: [email protected]
Subject: Re: [cas-user] SAML Ticket Validation

> OK. Here we go... Something indeed seems to be wrong with mod_auth_cas. With
> every http request for SAML validation I get one or more segfaults in the
> apache default error.log.

Two observations about the logs you shared:

1. You're getting a successful SAML ticket validation response.
2. Looks like you're getting redirected to CAS for resources (JS, CSS,
favicon) other than your application entry point HTML page.

There's nothing strictly wrong with #2 per se, but it makes reading
the logs much harder and it's relatively less efficient.

It would be interesting to have some logging to indicate successful
parsing of attributes, but I don't see an AttributeResponse in the
SAML message, which indicates you haven't configured CAS for attribute
release or you haven't allowed attributes to be released in the
service manager. I have a patched version you can use that provides
additional attribute logging,
https://github.com/serac/mod_auth_cas/tree/attr-logging, which you may
find helpful. In my experience most problems are in parsing the XML;
it would be reassuring to know you're getting past that part.

M

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