SB2013052422 - Input validation error in libx11 (Alpine package)

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

• https://git.alpinelinux.org/aports/commit/?id=bb8271270a6c29531b9708ed6ac6025575c0d180
• https://git.alpinelinux.org/aports/commit/?id=d6759740f6149bf3bc43f2d95e9d78432a628232
• https://git.alpinelinux.org/aports/commit/?id=db1e74cf060eb177b9bd1f5ef787b90b19609c5b
• https://git.alpinelinux.org/aports/commit/?id=29cd7b42af8cddcb339f1328bf8f7be3a115b396