CVE-2011-4089

Severity: medium (CVSS 4.6 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2014-04-16 · updated 2026-06-16
Weakness: CWE-264

Description

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 products

Bzip2: through 1.0.4; 1.0, 1.0.1, 1.0.2, 1.0.3

References

http://seclists.org/fulldisclosure/2011/Oct/804
http://www.exploit-db.com/exploits/18147
http://www.openwall.com/lists/oss-security/2011/10/28/16
http://www.ubuntu.com/usn/USN-1308-1
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=632862
http://seclists.org/fulldisclosure/2011/Oct/804
http://www.exploit-db.com/exploits/18147
http://www.openwall.com/lists/oss-security/2011/10/28/16
http://www.ubuntu.com/usn/USN-1308-1
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=632862

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