Not trying to pester, but bumping this in case you didn't see that I
posted the requested file.
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https://bugs.launchpad.net/bugs/1690485
Title:
Yeah, this is almost starting to look like malware trying to exfiltrate
keys somehow! Unauthorized socket I/O being done by a library that
doesn't match the symbol tables? (I'm glad I don't have any Kerberos
keys to leak!)
** Attachment added: "libkeyutils.so.1.5"
Disable ssl-engine, re-enable kerberos5, it still crashes.
I'm pretty sure I'm running a stock OpenSSL. The only things
that I can think of that I might have done in that general
vicinity were to install xinetd, althttpd, and stunnel4, and
to obtain a host certificate from letsencrypt.org.
I'm
(And, for what it's worth, I don't, to the best of my knowledge, have anything
Kerberos-related set up. There is no /etc/krb5.conf file.
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I lied. I experimented with ./configure flags.
--with-kerberos5=/usr
is definitely the flag that is triggering the crash. Removing this
flag alone cures the crash.
Command that was used:
../configure --build=x86_64-linux-gnu --prefix=/usr \
--includedir=\${prefix}/include
OK, I applied your patch, and was lucid enough to follow farther
into the maze with a few additional debug3's.
I get down into the 'cipher_crypt' function, at line 378:
if (EVP_Cipher(cc->evp, dest + aadlen, (u_char *)src + aadlen,
len) < 0)
return
Seth: Your requested output is perf-20171026.txt
It's not clear to me what's out of the ordinary in the stack
traces, except of course that once we're in the Python code
of 'apport', things have unquestionably already gone to Hell.
Maybe someone who's familiar with the code will have a better
The plot thickens.
The configuration of the build appears to be partially implicated.
Could it be that with your ./configure flags, it's failing to find a
failing PAM or something?
When I build with the ./configure that you suggested, it works.
When I build with dpkg-buildpackage, on the same
OK, I think I've followed instructions here.
I built with the '#define SANDBOX_SECCOMP_FILTER_DEBUG 1'
uncommented. Recalling at long last that Ubuntu is Debian
(I use Red Hat/CentOS at work and get them confused), I
used 'dpkg-buildpackage -rfakeroot -uc -b' to do the build;
hope that's OK. I
Upgraded to 17.10. Uninstalled and reinstalled openssh-client, openssh-
server (including loading a fresh /usr/etc/ssh directory).
Still fails.
I attach the output of:
sudo strace -f -e trace=socket /usr/sbin/sshd -d 2>&1 | tee sshd.result.txt
All the other configuration is as before.
What
Oh, another note: changing the UsePrivilegeSeparation setting no longer
works. It reports that the setting is deprecated and ignores it. This
leaves me without a workaround.
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Public bug reported:
apparent conflict with package 'imgcnv' - no idea who's right.
$ sudo apt install libfftw3-3 libfftw3-dev libfftw3-doc
Reading package lists... Done
Building dependency tree
Reading state information... Done
libfftw3-3 is already the newest version (3.3.5-3).
Here's the output of 'ssh -v localhost' when authorization is failing
** Attachment added: "Output of 'ssh -v localhost'"
https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1690485/+attachment/4877135/+files/sshclient.txt
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And here's /etc/ssh/sshd_config on which authorization is failing.
** Attachment added: "/etc/ssh/sshd_config"
https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1690485/+attachment/4877150/+files/sshd_config
** Changed in: openssh (Ubuntu)
Status: Incomplete => New
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Here's /var/log/syslog from the ssh daemon restart through the
authorization failure
** Attachment added: "/var/log/syslog"
https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1690485/+attachment/4877134/+files/syslog.txt
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I reset /etc/ssh/sshd_config to the attached version, and attempted
ssh -v localhost
while logged in as username=kennykb uid=117
The output of 'ssh -v' is attached as 'sshclient.txt'.
The only lines that appeared in syslog after I restarted the daemon were
in the attached 'syslog.txt'.
The
Public bug reported:
The 'sshd' process gets 'authentication failure' and refuses to allow
any login.
dmesg indicates that the problem is SIGSYS on a call to 'socket'
(syscall #41, signal #31).
On a hunch, I decided to test whether the problem is related to
'seccomp' and changed
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