SB2015041302 - Ubuntu update for libx11, libxrender
Published: April 13, 2015 Updated: October 30, 2026
Security Bulletin ID
SB2015041302
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Buffer overflow (CVE-ID: CVE-2013-7439)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 6.9 [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]
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to multiple off-by-one errors in the MakeBigReq and SetReqLen macros in include/X11/Xlibint.h in X11R6.x and libX11. A remote attacker can create a specially crafted request, trigger buffer overflow and execute arbitrary code on the target system.
Remediation
Install update from vendor's website.