Security update for openssh
|References:||#903649 #932483 #936695 #938746 #939932 #943006 #943010 #945484 #945493 #947458|
An update that solves 5 vulnerabilities and has 5 fixes is now available.
OpenSSH was updated to fix several security issues and bugs.
Please note that due to a bug in the previous shipped openssh version,
sshd might not correctly restart. Please verify that the ssh daemon is
running after installing this update.
These security issues were fixed:
* CVE-2015-5352: The x11_open_helper function, 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.
* CVE-2015-5600: The kbdint_next_device function in auth2-chall.c in sshd
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.
* CVE-2015-4000: Removed and disabled weak DH groups to address LOGJAM.
* Hardening patch to fix sftp RCE. (bsc#903649)
* CVE-2015-6563: The monitor component in sshd 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 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.
Additional a bug was fixed that could lead to openssh not working in
To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product:
- SUSE Linux Enterprise Server 11-SP4:
zypper in -t patch slessp4-openssh-12119=1
- SUSE Linux Enterprise Desktop 11-SP4:
zypper in -t patch sledsp4-openssh-12119=1
- SUSE Linux Enterprise Debuginfo 11-SP4:
zypper in -t patch dbgsp4-openssh-12119=1
To bring your system up-to-date, use "zypper patch".
- SUSE Linux Enterprise Server 11-SP4 (i586 ia64 ppc64 s390x x86_64):
- SUSE Linux Enterprise Desktop 11-SP4 (i586 x86_64):
- SUSE Linux Enterprise Debuginfo 11-SP4 (i586 ia64 ppc64 s390x x86_64):