#VU32142 Data Handling in Libxml2 - CVE-2016-5153

Vulnerability identifier: #VU32142

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2016-5153

CWE-ID: CWE-19

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Libxml2
Universal components / Libraries / Libraries used by multiple products

Vendor: Gnome Development Team

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

The Web Animations implementation in Blink, as used in Google Chrome before 53.0.2785.89 on Windows and OS X and before 53.0.2785.92 on Linux, improperly relies on list iteration, which allows remote attackers to cause a denial of service (use-after-destruction) or possibly have unspecified other impact via a crafted web site.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Libxml2: 6.0.19

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External links
https://lists.opensuse.org/opensuse-security-announce/2016-09/msg00003.html
https://lists.opensuse.org/opensuse-security-announce/2016-09/msg00004.html
https://lists.opensuse.org/opensuse-security-announce/2016-09/msg00008.html
https://lists.opensuse.org/opensuse-updates/2016-09/msg00073.html
https://rhn.redhat.com/errata/RHSA-2016-1854.html
https://www.debian.org/security/2016/dsa-3660
https://www.securityfocus.com/bid/92717
https://www.securitytracker.com/id/1036729
https://codereview.chromium.org/2188623006
https://codereview.chromium.org/2189813002/
https://crbug.com/631052
https://googlechromereleases.blogspot.com/2016/08/stable-channel-update-for-desktop_31.html
https://security.gentoo.org/glsa/201610-09

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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.