SB2013061522 - Input validation error in xorg.freedesktop libx11

Description

This security bulletin contains information about 1 security vulnerability.

1) Input validation error (CVE-ID: CVE-2013-1981)

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

Multiple integer overflows in X.org libX11 1.5.99.901 (1.6 RC1) and earlier allow X servers to trigger allocation of insufficient memory and a buffer overflow via vectors related to the (1) XQueryFont, (2) _XF86BigfontQueryFont, (3) XListFontsWithInfo, (4) XGetMotionEvents, (5) XListHosts, (6) XGetModifierMapping, (7) XGetPointerMapping, (8) XGetKeyboardMapping, (9) XGetWindowProperty, (10) XGetImage, (11) LoadColornameDB, (12) XrmGetFileDatabase, (13) _XimParseStringFile, or (14) TransFileName functions. Additional products added per http://www.ubuntu.com/usn/USN-1854-1/

Remediation

Install update from vendor's website.

References

• http://lists.fedoraproject.org/pipermail/package-announce/2013-May/106781.html
• http://www.debian.org/security/2013/dsa-2693
• http://www.openwall.com/lists/oss-security/2013/05/23/3
• http://www.securityfocus.com/bid/60120
• http://www.ubuntu.com/usn/USN-1854-1
• http://www.x.org/wiki/Development/Security/Advisory-2013-05-23