Buffer overflow in Libxml2

1) Buffer overflow

EUVDB-ID: #VU31951

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-2073

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

The htmlParseNameComplex function in HTMLparser.c in libxml2 allows attackers to cause a denial of service (out-of-bounds read) via a crafted XML document.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Libxml2: 2.9.0 - 2.9.3

External links

http://www.openwall.com/lists/oss-security/2016/01/25/6
http://www.openwall.com/lists/oss-security/2016/01/26/7
http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
http://www.securityfocus.com/bid/85267
http://www.securitytracker.com/id/1035011
http://www.ubuntu.com/usn/USN-2994-1
http://security.gentoo.org/glsa/201701-37
http://www.debian.org/security/2016/dsa-3593

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.