SUSE SLES11 Security Update : kernel (SUSE-SU-2017:1628-1) (Stack Clash)

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote SUSE host is missing one or more security updates.

Description :

The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various
security and bugfixes. The following security bugs were fixed :

- CVE-2017-1000364: The default stack guard page was too
small and could be 'jumped over' by userland programs
using more than one page of stack in functions and so
lead to memory corruption. This update extends the stack
guard page to 1 MB (for 4k pages) and 16 MB (for 64k
pages) to reduce this attack vector. This is not a
kernel bugfix, but a hardening measure against this kind
of userland attack.(bsc#1039348) The following
non-security bugs were fixed :

- fnic now returns 'DID_IMM_RETRY' if rport is not ready
(bsc#1035920).

- fnic is now using rport->dd_data to check if rport is
online instead of rport_lookup (bsc#1035920).

- The rport check location in fnic_queuecommand_lck was
corrected (bsc#1035920).

- xfs: remove patches that caused regression
(bsc#1043234).

- mm: enlarge stack guard gap (bnc#1039348,
CVE-2017-1000364, bnc#1042921).

- PCI: Allow access to VPD attributes with size 0
(bsc#1018074).

Note that Tenable Network Security has extracted the preceding
description block directly from the SUSE security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

See also :

https://bugzilla.suse.com/1018074
https://bugzilla.suse.com/1035920
https://bugzilla.suse.com/1039348
https://bugzilla.suse.com/1042921
https://bugzilla.suse.com/1043234
https://www.suse.com/security/cve/CVE-2017-1000364.html
http://www.nessus.org/u?b482c316

Solution :

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

SUSE Linux Enterprise Software Development Kit 11-SP4:zypper in -t
patch sdksp4-kernel-13160=1

SUSE Linux Enterprise Server 11-SP4:zypper in -t patch
slessp4-kernel-13160=1

SUSE Linux Enterprise Server 11-EXTRA:zypper in -t patch
slexsp3-kernel-13160=1

SUSE Linux Enterprise Debuginfo 11-SP4:zypper in -t patch
dbgsp4-kernel-13160=1

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

Risk factor :

Medium / CVSS Base Score : 6.2
(CVSS2#AV:L/AC:H/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 5.1
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Family: SuSE Local Security Checks

Nessus Plugin ID: 100954 ()

Bugtraq ID:

CVE ID: CVE-2017-1000364

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