SUSE SLED12 / SLES12 Security Update : libxml2 (SUSE-SU-2016:1204-1)
Medium Nessus Plugin ID 90885
SynopsisThe remote SUSE host is missing one or more security updates.
DescriptionThis update for libxml2 fixes two security issues :
- libxml2 limits the number of recursions an XML document can contain so to protect against the 'Billion Laughs' denial-of-service attack. Unfortunately, the underlying counter was not incremented properly in all necessary locations. Therefore, specially crafted XML documents could exhaust all available stack space and crash the XML parser without running into the recursion limit.
This vulnerability has been fixed. (bsc#975947)
- When running in recovery mode, certain invalid XML documents would trigger an infinite recursion in libxml2 that ran until all stack space was exhausted. This vulnerability could have been used to facilitate a denial-of-sevice attack. (CVE-2016-3627, bsc#972335)
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.
SolutionTo 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 12-SP1 :
zypper in -t patch SUSE-SLE-SDK-12-SP1-2016-709=1
SUSE Linux Enterprise Software Development Kit 12 :
zypper in -t patch SUSE-SLE-SDK-12-2016-709=1
SUSE Linux Enterprise Server 12-SP1 :
zypper in -t patch SUSE-SLE-SERVER-12-SP1-2016-709=1
SUSE Linux Enterprise Server 12 :
zypper in -t patch SUSE-SLE-SERVER-12-2016-709=1
SUSE Linux Enterprise Desktop 12-SP1 :
zypper in -t patch SUSE-SLE-DESKTOP-12-SP1-2016-709=1
SUSE Linux Enterprise Desktop 12 :
zypper in -t patch SUSE-SLE-DESKTOP-12-2016-709=1
To bring your system up-to-date, use 'zypper patch'.