Permissions, Privileges, and Access Controls in bzip2 - CVE-2011-4089
Published: April 16, 2014 / Updated: August 11, 2020
Vulnerability identifier: #VU41797
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2011-4089
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
The bzexe command in bzip2 1.0.5 and earlier generates compressed executables that do not properly handle temporary files during extraction, which allows local users to execute arbitrary code by precreating a temporary directory.
Affected software
bzip2
How to mitigate CVE-2011-4089
Install update from vendor's website.