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CVE-2012-5580

Published: 27 October 2014

Format string vulnerability in the print_proxies function in bin/proxy.c in libproxy 0.3.1 might allow context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via format string specifiers in a proxy name, as demonstrated using the http_proxy environment variable or a PAC file.

Notes

AuthorNote
mdeslaur
only used in "proxy" tool in libproxy-tools package, and
caught by FORTIFY_SOURCE. Reproducer from SUSE bug:
http_proxy=http://foo%n.suse.de/ proxy http://foo.bar.de

Priority

Low

Status

Package Release Status
libproxy
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Ignored
(end of life)
oneiric Ignored
(end of life)
precise Not vulnerable
(0.4.7-0ubuntu4.1)
quantal Not vulnerable
(0.4.7-0ubuntu6)
raring Not vulnerable
(0.4.10-0ubuntu1)
upstream
Released (0.3.1-5.1)
Patches:
upstream: https://code.google.com/p/libproxy/source/detail?r=475
This vulnerability is mitigated in part by the use of -D_FORTIFY_SOURCE=2 in Ubuntu.