SUSE SLED12 / SLES12 Security Update : polkit (SUSE-SU-2015:1838-1)

Medium Nessus Plugin ID 86649

Synopsis

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

Description

polkit was updated to the 0.113 release, fixing security issues and bugs.

Security issues fixed :

- Fixes CVE-2015-4625, a local privilege escalation due to predictable authentication session cookie values. Thanks to Tavis Ormandy, Google Project Zero for reporting this issue. For the future, authentication agents are encouraged to use PolkitAgentSession instead of using the D-Bus agent response API directly. (bsc#935119)

- Fixes CVE-2015-3256, various memory corruption vulnerabilities in use of the JavaScript interpreter, possibly leading to local privilege escalation.
(bsc#943816)

- Fixes CVE-2015-3255, a memory corruption vulnerability in handling duplicate action IDs, possibly leading to local privilege escalation. Thanks to Laurent Bigonville for reporting this issue. (bsc#939246)

- Fixes CVE-2015-3218, which allowed any local user to crash polkitd. Thanks to Tavis Ormandy, Google Project Zero, for reporting this issue. (bsc#933922)

Other issues fixed :

- On systemd-213 and later, the 'active' state is shared across all sessions of an user, instead of being tracked separately.

- pkexec, when not given a program to execute, runs the users shell by default.

- Fixed shutdown problems on powerpc64le (bsc#950114)

- polkit had a memory leak (bsc#912889)

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 Workstation Extension 12 :

zypper in -t patch SUSE-SLE-WE-12-2015-759=1

SUSE Linux Enterprise Software Development Kit 12 :

zypper in -t patch SUSE-SLE-SDK-12-2015-759=1

SUSE Linux Enterprise Server 12 :

zypper in -t patch SUSE-SLE-SERVER-12-2015-759=1

SUSE Linux Enterprise Desktop 12 :

zypper in -t patch SUSE-SLE-DESKTOP-12-2015-759=1

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

See Also

https://bugzilla.suse.com/show_bug.cgi?id=912889

https://bugzilla.suse.com/show_bug.cgi?id=933922

https://bugzilla.suse.com/show_bug.cgi?id=935119

https://bugzilla.suse.com/show_bug.cgi?id=939246

https://bugzilla.suse.com/show_bug.cgi?id=943816

https://bugzilla.suse.com/show_bug.cgi?id=950114

https://www.suse.com/security/cve/CVE-2015-3218/

https://www.suse.com/security/cve/CVE-2015-3255/

https://www.suse.com/security/cve/CVE-2015-3256/

https://www.suse.com/security/cve/CVE-2015-4625/

http://www.nessus.org/u?e9a03389

Plugin Details

Severity: Medium

ID: 86649

File Name: suse_SU-2015-1838-1.nasl

Version: 2.9

Type: local

Agent: unix

Published: 2015/10/29

Updated: 2019/09/11

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 4.6

Temporal Score: 3.4

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

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

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:libpolkit0, p-cpe:/a:novell:suse_linux:libpolkit0-debuginfo, p-cpe:/a:novell:suse_linux:polkit, p-cpe:/a:novell:suse_linux:polkit-debuginfo, p-cpe:/a:novell:suse_linux:polkit-debugsource, p-cpe:/a:novell:suse_linux:typelib-1_0-Polkit, cpe:/o:novell:suse_linux:12

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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2015/10/22

Vulnerability Publication Date: 2015/10/26

Reference Information

CVE: CVE-2015-3218, CVE-2015-3255, CVE-2015-3256, CVE-2015-4625

BID: 75267