Heap-based buffer overflow in Libxml2

1) Heap-based buffer overflow

EUVDB-ID: #VU32383

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2015-7499

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in Heap-based buffer overflow in the xmlGROW function in parser.c in libxml2 before 2.9.3. A remote attacker can use unspecified vectors. to trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update to version 2.9.3.

Vulnerable software versions

Libxml2: 2.9.0 - 2.9.2

External links

http://lists.apple.com/archives/security-announce/2016/Mar/msg00000.html
http://lists.apple.com/archives/security-announce/2016/Mar/msg00001.html
http://lists.apple.com/archives/security-announce/2016/Mar/msg00002.html
http://lists.apple.com/archives/security-announce/2016/Mar/msg00004.html
http://lists.opensuse.org/opensuse-updates/2015-12/msg00120.html
http://lists.opensuse.org/opensuse-updates/2016-01/msg00031.html
http://marc.info/?l=bugtraq&m=145382616617563&w=2
http://rhn.redhat.com/errata/RHSA-2015-2549.html
http://rhn.redhat.com/errata/RHSA-2015-2550.html
http://rhn.redhat.com/errata/RHSA-2016-1089.html
http://www.debian.org/security/2015/dsa-3430
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
http://www.securityfocus.com/bid/79509
http://www.securitytracker.com/id/1034243
http://www.ubuntu.com/usn/USN-2834-1
http://xmlsoft.org/news.html
http://bugzilla.redhat.com/show_bug.cgi?id=1281925
http://git.gnome.org/browse/libxml2/commit/?id=28cd9cb747a94483f4aea7f0968d202c20bb4cfc
http://git.gnome.org/browse/libxml2/commit/?id=35bcb1d758ed70aa7b257c9c3b3ff55e54e3d0da
http://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c04944172
http://security.gentoo.org/glsa/201701-37
http://support.apple.com/HT206166
http://support.apple.com/HT206167
http://support.apple.com/HT206168
http://support.apple.com/HT206169

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.