Mailinglist Archive: opensuse-security-announce (28 mails)

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[security-announce] SUSE-SU-2015:1581-1: important: Security update for openssh
SUSE Security Update: Security update for openssh
______________________________________________________________________________

Announcement ID: SUSE-SU-2015:1581-1
Rating: important
References: #673532 #903649 #905118 #914309 #916549 #932483
#936695 #938746 #943006 #943010 #945493
Cross-References: CVE-2015-4000 CVE-2015-5352 CVE-2015-5600
CVE-2015-6563 CVE-2015-6564
Affected Products:
SUSE Linux Enterprise Server for VMWare 11-SP3
SUSE Linux Enterprise Server 11-SP3
SUSE Linux Enterprise Desktop 11-SP3
SUSE Linux Enterprise Debuginfo 11-SP3
______________________________________________________________________________

An update that solves 5 vulnerabilities and has 6 fixes is
now available.

Description:

openssh was updated to fix several security issues and bugs.

These security issues were fixed:
* CVE-2015-5352: The x11_open_helper function in channels.c in ssh in
OpenSSH when ForwardX11Trusted mode is not used, lacked a check of the
refusal deadline for X connections, which made it easier for remote
attackers to bypass intended access restrictions via a connection outside
of the permitted time window (bsc#936695).
* CVE-2015-5600: The kbdint_next_device function in auth2-chall.c in sshd
in OpenSSH did not properly restrict the processing of
keyboard-interactive devices within a single connection, which made it
easier for remote attackers to conduct brute-force attacks or cause a
denial of service (CPU consumption) via a long and duplicative list in
the ssh -oKbdInteractiveDevices option, as demonstrated by a modified
client that provides a different password for each pam element on this
list (bsc#938746).
* CVE-2015-4000: Removed and disabled weak DH groups to address LOGJAM
(bsc#932483).
* Hardening patch to fix sftp RCE (bsc#903649).
* CVE-2015-6563: The monitor component in sshd in OpenSSH accepted
extraneous username data in MONITOR_REQ_PAM_INIT_CTX requests, which
allowed local users to conduct impersonation attacks by leveraging any
SSH login access in conjunction with control of the sshd uid to send a
crafted MONITOR_REQ_PWNAM request, related to monitor.c and
monitor_wrap.c.
* CVE-2015-6564: Use-after-free vulnerability in the
mm_answer_pam_free_ctx function in monitor.c in sshd in OpenSSH might
have allowed local users to gain privileges by leveraging control of the
sshd uid to send an unexpectedly early MONITOR_REQ_PAM_FREE_CTX request.

These non-security issues were fixed:
- bsc#914309: sshd inherits oom_adj -17 on SIGHUP causing DoS potential
for oom_killer.
- bsc#673532: limits.conf fsize change in SLES10SP3 causing problems to
WebSphere mqm user.
- bsc#916549: Fixed support for aesXXX-gcm@xxxxxxxxxxx.


Patch Instructions:

To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product:

- SUSE Linux Enterprise Server for VMWare 11-SP3:

zypper in -t patch slessp3-openssh-12096=1

- SUSE Linux Enterprise Server 11-SP3:

zypper in -t patch slessp3-openssh-12096=1

- SUSE Linux Enterprise Desktop 11-SP3:

zypper in -t patch sledsp3-openssh-12096=1

- SUSE Linux Enterprise Debuginfo 11-SP3:

zypper in -t patch dbgsp3-openssh-12096=1

To bring your system up-to-date, use "zypper patch".


Package List:

- SUSE Linux Enterprise Server for VMWare 11-SP3 (i586 x86_64):

openssh-6.2p2-0.21.1
openssh-askpass-6.2p2-0.21.1
openssh-askpass-gnome-6.2p2-0.21.3

- SUSE Linux Enterprise Server 11-SP3 (i586 ia64 ppc64 s390x x86_64):

openssh-6.2p2-0.21.1
openssh-askpass-6.2p2-0.21.1
openssh-askpass-gnome-6.2p2-0.21.3

- SUSE Linux Enterprise Desktop 11-SP3 (i586 x86_64):

openssh-6.2p2-0.21.1
openssh-askpass-6.2p2-0.21.1
openssh-askpass-gnome-6.2p2-0.21.3

- SUSE Linux Enterprise Debuginfo 11-SP3 (i586 ia64 ppc64 s390x x86_64):

openssh-askpass-gnome-debuginfo-6.2p2-0.21.3
openssh-debuginfo-6.2p2-0.21.1
openssh-debugsource-6.2p2-0.21.1


References:

https://www.suse.com/security/cve/CVE-2015-4000.html
https://www.suse.com/security/cve/CVE-2015-5352.html
https://www.suse.com/security/cve/CVE-2015-5600.html
https://www.suse.com/security/cve/CVE-2015-6563.html
https://www.suse.com/security/cve/CVE-2015-6564.html
https://bugzilla.suse.com/673532
https://bugzilla.suse.com/903649
https://bugzilla.suse.com/905118
https://bugzilla.suse.com/914309
https://bugzilla.suse.com/916549
https://bugzilla.suse.com/932483
https://bugzilla.suse.com/936695
https://bugzilla.suse.com/938746
https://bugzilla.suse.com/943006
https://bugzilla.suse.com/943010
https://bugzilla.suse.com/945493

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