Buffer overflow in xorg.freedesktop xcmsdb

1) Buffer overflow

EUVDB-ID: #VU32668

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2013-2005

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

X.org libXt 1.1.3 and earlier does not check the return value of the XGetWindowProperty function, which allows X servers to trigger use of an uninitialized pointer and memory corruption via vectors related to the (1) ReqCleanup, (2) HandleSelectionEvents, (3) ReqTimedOut, (4) HandleNormal, and (5) HandleSelectionReplies functions.

Mitigation

Install update from vendor's website.

Vulnerable software versions

xcmsdb: 1.1.0 - 1.1.3

CPE2.3

• cpe:2.3:a:xorg.freedesktop.org:xcmsdb:1.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:xorg.freedesktop.org:xcmsdb:1.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:xorg.freedesktop.org:xcmsdb:1.1.2:*:*:*:*:*:*:*

External links

https://lists.fedoraproject.org/pipermail/package-announce/2013-May/106785.html
https://lists.opensuse.org/opensuse-updates/2013-06/msg00138.html
https://www.debian.org/security/2013/dsa-2680
https://www.openwall.com/lists/oss-security/2013/05/23/3
https://www.securityfocus.com/bid/60133
https://www.ubuntu.com/usn/USN-1865-1
https://www.x.org/wiki/Development/Security/Advisory-2013-05-23

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.