** DISPUTED ** postfix_groups.pl in Postfix 2.5.2 allows local users to overwrite arbitrary files via a symlink attack on the (1) /tmp/postfix_groups.stdout, (2) /tmp/postfix_groups.stderr, and (3) /tmp/postfix_groups.message temporary files. NOTE: the vendor disputes this vulnerability, stating "This is not a real issue ... users would have to edit a script under /usr/lib to enable it."
CVSS Severity (version 2.0):
Impact Subscore: 10.0
Exploitability Subscore: 3.4
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service
Official Statement from Red Hat (11/06/2008)
Not vulnerable. This issue did not affect the versions of postfix as shipped with Red Hat Enterprise Linux 3, 4, or 5. Mentioned script is not part of the official postfix distribution and is not included in Red Hat Enterprise Linux postfix packages.
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[oss-security] 20081030 CVE requests: tempfile issues for aview, mgetty, openoffice, crossfire
Vulnerable software and versions