Hello Steve,

- patch
 - I'm fine with explanation
- Cert error
 - for example here:
https://autobuilder.yocto.io/pub/non-release/patchmetrics/cve-status-dunfell.txt

Regards,
Andrej

On Fri, 2023-03-10 at 04:40 -1000, Steve Sakoman wrote:
> On Fri, Mar 10, 2023 at 3:09 AM Valek, Andrej
> <[email protected]> wrote:
> > 
> > Hello again,
> > 
> > Looks like that this patch showed some isses/open points:
> > - CVE-2021-22897 is white-listed already, but in hardknott is fixed
> > already
> > https://github.com/openembedded/openembedded-core/blob/hardknott/meta/recipes-support/curl/curl/CVE-2021-22897.patch
> >  - So do we have to ignore the patch, or apply and remove the
> > whitelist, or remove patch from hardknott?
> 
> Hardknott is no longer being maintained, so nothing needs to be done
> there.
> 
> Since this is a Windows only bug ("It can only trigger when Schannel
> is used, which is the native TLS library in Microsoft Windows") I
> think the existing whitelist is fine and we don't need this
> additional
> patch.
> 
> > - Https certificate at yocto.io has been expired ;)
> 
> Can you give me the url which is giving the expired certificate
> error?
> 
> Thanks!
> 
> Steve
> 
> > Regards,
> > Andrej
> > 
> > On Fri, 2023-03-10 at 13:45 +0100, Andrej Valek wrote:
> > > https://curl.se/docs/CVE-2021-22897.html
> > > 
> > > Signed-off-by: Andrej Valek <[email protected]>
> > > ---
> > >  .../curl/curl/CVE-2021-22897.patch            | 73
> > > +++++++++++++++++++
> > >  meta/recipes-support/curl/curl_7.69.1.bb      |  1 +
> > >  2 files changed, 74 insertions(+)
> > >  create mode 100644 meta/recipes-support/curl/curl/CVE-2021-
> > > 22897.patch
> > > 
> > > diff --git a/meta/recipes-support/curl/curl/CVE-2021-22897.patch
> > > b/meta/recipes-support/curl/curl/CVE-2021-22897.patch
> > > new file mode 100644
> > > index 0000000000..cbd6c067ce
> > > --- /dev/null
> > > +++ b/meta/recipes-support/curl/curl/CVE-2021-22897.patch
> > > @@ -0,0 +1,73 @@
> > > +From bbb71507b7bab52002f9b1e0880bed6a32834511 Mon Sep 17
> > > 00:00:00
> > > 2001
> > > +From: Daniel Stenberg <[email protected]>
> > > +Date: Fri, 23 Apr 2021 10:54:10 +0200
> > > +Subject: [PATCH] schannel: don't use static to store selected
> > > ciphers
> > > +
> > > +CVE-2021-22897
> > > +
> > > +Bug: https://curl.se/docs/CVE-2021-22897.html
> > > +
> > > +Upstream-Status: Backport
> > > +[
> > > https://github.com/curl/curl/commit/bbb71507b7bab52002f9b1e0880bed6a3
> > > 2834511]
> > > +
> > > +CVE: CVE-2021-22897
> > > +
> > > +Signed-off-by: Daniel Stenberg <[email protected]>
> > > +Signed-off-by: Khairul Rohaizzat Jamaluddin
> > > <[email protected]>
> > > +Signed-off-by: Andrej Valek <[email protected]>
> > > +---
> > > + lib/vtls/schannel.c | 9 +++++----
> > > + lib/vtls/schannel.h | 3 +++
> > > + 2 files changed, 8 insertions(+), 4 deletions(-)
> > > +
> > > +diff --git a/lib/vtls/schannel.c b/lib/vtls/schannel.c
> > > +index 8c25ac5dd5a5..dba7072273a9 100644
> > > +--- a/lib/vtls/schannel.c
> > > ++++ b/lib/vtls/schannel.c
> > > +@@ -322,12 +322,12 @@ get_alg_id_by_name(char *name)
> > > + }
> > > +
> > > + static CURLcode
> > > +-set_ssl_ciphers(SCHANNEL_CRED *schannel_cred, char *ciphers)
> > > ++set_ssl_ciphers(SCHANNEL_CRED *schannel_cred, char *ciphers,
> > > ++                int *algIds)
> > > + {
> > > +   char *startCur = ciphers;
> > > +   int algCount = 0;
> > > +-  static ALG_ID algIds[45]; /*There are 45 listed in the MS
> > > headers*/
> > > +-  while(startCur && (0 != *startCur) && (algCount < 45)) {
> > > ++  while(startCur && (0 != *startCur) && (algCount <
> > > NUMOF_CIPHERS))
> > > {
> > > +     long alg = strtol(startCur, 0, 0);
> > > +     if(!alg)
> > > +       alg = get_alg_id_by_name(startCur);
> > > +@@ -566,7 +566,8 @@ schannel_connect_step1(struct connectdat
> > > +     }
> > > +
> > > +     if(SSL_CONN_CONFIG(cipher_list)) {
> > > +-      result = set_ssl_ciphers(&schannel_cred,
> > > SSL_CONN_CONFIG(cipher_list));
> > > ++      result = set_ssl_ciphers(&schannel_cred,
> > > SSL_CONN_CONFIG(cipher_list),
> > > ++                               BACKEND->algIds);
> > > +       if(CURLE_OK != result) {
> > > +         failf(data, "Unable to set ciphers to passed via
> > > SSL_CONN_CONFIG");
> > > +         return result;
> > > +diff --git a/lib/vtls/schannel.h b/lib/vtls/schannel.h
> > > +index 2952caa1a5a1..77853aa30f96 100644
> > > +--- a/lib/vtls/schannel.h
> > > ++++ b/lib/vtls/schannel.h
> > > +@@ -70,6 +70,8 @@ CURLcode Curl_verify_certificate(struct
> > > + #endif
> > > + #endif
> > > +
> > > ++#define NUMOF_CIPHERS 45 /* There are 45 listed in the MS
> > > headers
> > > */
> > > ++
> > > + struct curl_schannel_cred {
> > > +   CredHandle cred_handle;
> > > +   TimeStamp time_stamp;
> > > +@@ -101,6 +103,7 @@ struct ssl_backend_data {
> > > + #ifdef HAS_MANUAL_VERIFY_API
> > > +   bool use_manual_cred_validation; /* true if manual cred
> > > validation is used */
> > > + #endif
> > > ++  ALG_ID algIds[NUMOF_CIPHERS];
> > > + };
> > > + #endif /* EXPOSE_SCHANNEL_INTERNAL_STRUCTS */
> > > +
> > > diff --git a/meta/recipes-support/curl/curl_7.69.1.bb
> > > b/meta/recipes-
> > > support/curl/curl_7.69.1.bb
> > > index ea36c0bd3d..384719dd15 100644
> > > --- a/meta/recipes-support/curl/curl_7.69.1.bb
> > > +++ b/meta/recipes-support/curl/curl_7.69.1.bb
> > > @@ -19,6 +19,7 @@ SRC_URI =
> > > "https://curl.haxx.se/download/curl-${PV}.tar.bz2 \
> > >             file://CVE-2020-8286.patch \
> > >             file://CVE-2021-22876.patch \
> > >             file://CVE-2021-22890.patch \
> > > +           file://CVE-2021-22897.patch \
> > >             file://CVE-2021-22898.patch \
> > >             file://CVE-2021-22924.patch \
> > >             file://CVE-2021-22925.patch \
> > 

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