Ubuntu update for libxfixes

1) Integer overflow

EUVDB-ID: #VU32228

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-7944

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

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

Integer overflow in X.org libXfixes before 5.0.3 on 32-bit platforms might allow remote X servers to gain privileges via a length value of INT_MAX, which triggers the client to stop reading data and get out of sync.

Mitigation

Update the affected package libxfixes to the latest version.

Vulnerable software versions

Ubuntu: 16.04

libxfixes3 (Ubuntu package): before 1:5.0.12ubuntu0.1~esm1

External links

http://ubuntu.com/security/notices/USN-5437-1

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.