#VU32381 Resource management error in Libxml2 - CVE-2015-8035

Vulnerability identifier: #VU32381

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2015-8035

CWE-ID: CWE-399

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 perform service disruption.

The xz_decomp function in xzlib.c in libxml2 2.9.1 does not properly detect compression errors, which allows context-dependent attackers to cause a denial of service (process hang) via crafted XML data.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Libxml2: 6.0.19

---

External links
https://lists.apple.com/archives/security-announce/2016/Mar/msg00000.html
https://lists.apple.com/archives/security-announce/2016/Mar/msg00001.html
https://lists.apple.com/archives/security-announce/2016/Mar/msg00002.html
https://lists.apple.com/archives/security-announce/2016/Mar/msg00004.html
https://lists.fedoraproject.org/pipermail/package-announce/2016-February/177341.html
https://lists.fedoraproject.org/pipermail/package-announce/2016-February/177381.html
https://lists.opensuse.org/opensuse-updates/2015-12/msg00120.html
https://lists.opensuse.org/opensuse-updates/2016-01/msg00031.html
https://rhn.redhat.com/errata/RHSA-2016-1089.html
https://www.debian.org/security/2015/dsa-3430
https://www.openwall.com/lists/oss-security/2015/11/02/2
https://www.openwall.com/lists/oss-security/2015/11/02/4
https://www.openwall.com/lists/oss-security/2015/11/03/1
https://www.securityfocus.com/bid/77390
https://www.securitytracker.com/id/1034243
https://www.ubuntu.com/usn/USN-2812-1
https://xmlsoft.org/news.html
https://bugzilla.gnome.org/show_bug.cgi?id=757466
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05111017
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05158380
https://security.gentoo.org/glsa/201701-37
https://support.apple.com/HT206166
https://support.apple.com/HT206167
https://support.apple.com/HT206168
https://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.