Bug#905226: marked as done (openssh-server: SSH AuthorizedKeysCommand hangs when output is too large)

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Bug#905226: marked as done (openssh-server: SSH AuthorizedKeysCommand hangs when output is too large)

Debian Bug Tracking System
Your message dated Sun, 11 Aug 2019 13:32:49 +0000
with message-id <[hidden email]>
and subject line Bug#905226: fixed in openssh 1:7.4p1-10+deb9u7
has caused the Debian Bug report #905226,
regarding openssh-server: SSH AuthorizedKeysCommand hangs when output is too large
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact [hidden email]
immediately.)


--
905226: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=905226
Debian Bug Tracking System
Contact [hidden email] with problems

Package: openssh-server
Version: 1:7.4p1-10+deb9u3
Severity: important
Tags: patch upstream

Dear Maintainer,

when sshd's AuthorizedKeysCommand outputs a lot of keys and the match is close to the beginning of the output sshd will deadlock.  Upstream has a patch ready to fix this issue, which would need to be backported to OpenSSH 7.4p1 as used by Debian 9.5.

Patch: https://github.com/openssh/openssh-portable/commit/ddd3d34e5c7979ca6f4a3a98a7d219a4ed3d98c2

See-Also: https://bugzilla.mindrot.org/show_bug.cgi?id=2655
See-Also: https://bugzilla.redhat.com/show_bug.cgi?id=1496467


-- System Information:
Debian Release: 9.5
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.9.0-6-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages openssh-server depends on:
ii  adduser                3.115
ii  debconf [debconf-2.0]  1.5.61
ii  dpkg                   1.18.25
ii  init-system-helpers    1.48
ii  libaudit1              1:2.6.7-2
ii  libc6                  2.24-11+deb9u3
ii  libcomerr2             1.43.4-2
ii  libgssapi-krb5-2       1.15-1+deb9u1
ii  libkrb5-3              1.15-1+deb9u1
ii  libpam-modules         1.1.8-3.6
ii  libpam-runtime         1.1.8-3.6
ii  libpam0g               1.1.8-3.6
ii  libselinux1            2.6-3+b3
ii  libssl1.0.2            1.0.2l-2+deb9u3
ii  libsystemd0            232-25+deb9u4
ii  libwrap0               7.6.q-26
ii  lsb-base               9.20161125
ii  openssh-client         1:7.4p1-10+deb9u3
ii  openssh-sftp-server    1:7.4p1-10+deb9u3
ii  procps                 2:3.3.12-3+deb9u1
ii  ucf                    3.0036
ii  zlib1g                 1:1.2.8.dfsg-5

Versions of packages openssh-server recommends:
ii  libpam-systemd  232-25+deb9u4
ii  ncurses-term    6.0+20161126-1+deb9u2
ii  xauth           1:1.0.9-1+b2

Versions of packages openssh-server suggests:
pn  molly-guard   <none>
pn  monkeysphere  <none>
pn  rssh          <none>
pn  ssh-askpass   <none>
pn  ufw           <none>

-- debconf information:
  openssh-server/permit-root-login: true

Source: openssh
Source-Version: 1:7.4p1-10+deb9u7

We believe that the bug you reported is fixed in the latest version of
openssh, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to [hidden email],
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Moritz Mühlenhoff <[hidden email]> (supplier of updated openssh package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [hidden email])


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

Format: 1.8
Date: Mon, 15 Jul 2019 15:32:09 +0200
Source: openssh
Binary: openssh-client openssh-client-ssh1 openssh-server openssh-sftp-server ssh ssh-krb5 ssh-askpass-gnome openssh-client-udeb openssh-server-udeb
Architecture: source amd64 all
Version: 1:7.4p1-10+deb9u7
Distribution: stretch
Urgency: medium
Maintainer: Debian OpenSSH Maintainers <[hidden email]>
Changed-By: Moritz Mühlenhoff <[hidden email]>
Description:
 openssh-client - secure shell (SSH) client, for secure access to remote machines
 openssh-client-ssh1 - secure shell (SSH) client for legacy SSH1 protocol
 openssh-client-udeb - secure shell client for the Debian installer (udeb)
 openssh-server - secure shell (SSH) server, for secure access from remote machines
 openssh-server-udeb - secure shell server for the Debian installer (udeb)
 openssh-sftp-server - secure shell (SSH) sftp server module, for SFTP access from remot
 ssh        - secure shell client and server (metapackage)
 ssh-askpass-gnome - interactive X program to prompt users for a passphrase for ssh-ad
 ssh-krb5   - secure shell client and server (transitional package)
Closes: 905226
Changes:
 openssh (1:7.4p1-10+deb9u7) stretch; urgency=medium
 .
   * Fix deadlock when the keys/principals command produces a lot of
     output and a key is matched early (upstream commit
     ddd3d34e5c7979ca6f4a3a98a7d219a4ed3d98c2). (Closes: #905226)
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 93f0cbdb4a61e2e3983e2830c5ad447ff820ab327556a33368358a4c64566e2b 339926 openssh-client-ssh1_7.4p1-10+deb9u7_amd64.deb
 5dc475f0a2fd20c99545f1c723010df819b426fe0fed108e3c69232aad32d839 280194 openssh-client-udeb_7.4p1-10+deb9u7_amd64.udeb
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 7284fb0e5058c1e9db88e10b1da19c1fa499c77fe41734d2beb02c8d241118b9 876472 openssh-server-dbgsym_7.4p1-10+deb9u7_amd64.deb
 1fea8cfd9c945a3e696821f32760a95f98c06d7ac364060d74686201097bf12e 282446 openssh-server-udeb_7.4p1-10+deb9u7_amd64.udeb
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 7b3b9d57d18cadc286c1862e4459adece5017d37d54ca81ec4c23e3afd382a08 189496 ssh_7.4p1-10+deb9u7_all.deb
Files:
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 81d208639ef3e3013ea69c8cff9127a4 171104 net standard openssh_7.4p1-10+deb9u7.debian.tar.xz
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 c370cf25ce2a4cc407f02523c553e789 1214780 debug extra openssh-client-ssh1-dbgsym_7.4p1-10+deb9u7_amd64.deb
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 c5fe7927ef582c8e73750ed5468977e2 779802 net standard openssh-client_7.4p1-10+deb9u7_amd64.deb
 58ffb054adc7aae0633fc6ca2e762ebc 876472 debug extra openssh-server-dbgsym_7.4p1-10+deb9u7_amd64.deb
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 ff718a5ad497a955821e72c539459cab 332458 net optional openssh-server_7.4p1-10+deb9u7_amd64.deb
 0432a49e083aa1f9f0ca5416651b5d2e 107622 debug extra openssh-sftp-server-dbgsym_7.4p1-10+deb9u7_amd64.deb
 5d4d903ee746b64b108f7548ac570480 39518 net optional openssh-sftp-server_7.4p1-10+deb9u7_amd64.deb
 79c1d3e5126fae36b2b46acba4d79628 17559 net standard openssh_7.4p1-10+deb9u7_amd64.buildinfo
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ddd3d34e5c7979ca6f4a3a98a7d219a4ed3d98c2.patch (1K) Download Attachment