CVE-2009-2939

Severity: medium (CVSS 6.9 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2009-09-21 · updated 2026-06-16
Weakness: CWE-59

Description

The postfix.postinst script in the Debian GNU/Linux and Ubuntu postfix 2.5.5 package grants the postfix user write access to /var/spool/postfix/pid, which might allow local users to conduct symlink attacks that overwrite arbitrary files.

Affected products

Postfix: 2.5.5

References

http://www.debian.org/security/2011/dsa-2233
http://www.openwall.com/lists/oss-security/2009/09/18/6
http://www.debian.org/security/2011/dsa-2233
http://www.openwall.com/lists/oss-security/2009/09/18/6

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