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

Medium Nessus Plugin ID 100954

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 update package also includes non-security fixes. See advisory for details.

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.

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'.

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1018074

https://bugzilla.suse.com/show_bug.cgi?id=1035920

https://bugzilla.suse.com/show_bug.cgi?id=1039348

https://bugzilla.suse.com/show_bug.cgi?id=1042921

https://bugzilla.suse.com/show_bug.cgi?id=1043234

https://www.suse.com/security/cve/CVE-2017-1000364/

http://www.nessus.org/u?86a5c7f1

Plugin Details

Severity: Medium

ID: 100954

File Name: suse_SU-2017-1628-1.nasl

Version: 3.14

Type: local

Agent: unix

Published: 2017/06/21

Updated: 2019/04/10

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 6.2

Temporal Score: 5.1

Vector: CVSS2#AV:L/AC:H/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

CVSS v3.0

Base Score: 7.4

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:kernel-default, p-cpe:/a:novell:suse_linux:kernel-default-base, p-cpe:/a:novell:suse_linux:kernel-default-devel, p-cpe:/a:novell:suse_linux:kernel-default-man, p-cpe:/a:novell:suse_linux:kernel-ec2, p-cpe:/a:novell:suse_linux:kernel-ec2-base, p-cpe:/a:novell:suse_linux:kernel-ec2-devel, p-cpe:/a:novell:suse_linux:kernel-pae, p-cpe:/a:novell:suse_linux:kernel-pae-base, p-cpe:/a:novell:suse_linux:kernel-pae-devel, p-cpe:/a:novell:suse_linux:kernel-source, p-cpe:/a:novell:suse_linux:kernel-syms, p-cpe:/a:novell:suse_linux:kernel-trace, p-cpe:/a:novell:suse_linux:kernel-trace-base, p-cpe:/a:novell:suse_linux:kernel-trace-devel, p-cpe:/a:novell:suse_linux:kernel-xen, p-cpe:/a:novell:suse_linux:kernel-xen-base, p-cpe:/a:novell:suse_linux:kernel-xen-devel, cpe:/o:novell:suse_linux:11

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2017/06/20

Exploitable With

Metasploit (rsh_stack_clash_priv_esc.rb)

Reference Information

CVE: CVE-2017-1000364