Vulnerability identifier: #VU32437

Vulnerability risk: Medium

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

CVE-ID: CVE-2015-0255

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
xorg-server
Other software / Other software solutions

Vendor: xorg.freedesktop.org

Description

The vulnerability allows a remote non-authenticated attacker to #BASIC_IMPACT#.

X.Org Server (aka xserver and xorg-server) before 1.16.3 and 1.17.x before 1.17.1 allows remote attackers to obtain sensitive information from process memory or cause a denial of service (crash) via a crafted string length value in a XkbSetGeometry request.

Mitigation
Install update from vendor's website.

Vulnerable software versions

xorg-server: 1.12.1 - 1.20.6

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External links
http://advisories.mageia.org/MGASA-2015-0073.html
http://lists.opensuse.org/opensuse-updates/2015-02/msg00085.html
http://lists.opensuse.org/opensuse-updates/2015-02/msg00086.html
http://rhn.redhat.com/errata/RHSA-2015-0797.html
http://www.debian.org/security/2015/dsa-3160
http://www.mandriva.com/security/advisories?name=MDVSA-2015:119
http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html
http://www.oracle.com/technetwork/topics/security/cpujul2015-2367936.html
http://www.securityfocus.com/bid/72578
http://www.ubuntu.com/usn/USN-2500-1
http://www.x.org/wiki/Development/Security/Advisory-2015-02-10/
http://security.gentoo.org/glsa/201504-06

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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.