libproxy 0.4.9 PAC downloading buffer overflow

2012.10.12

Credit: Tomas Mraz

Risk: High

Local: No

Remote: Yes

CVE: CVE-2012-4505

CWE: CWE-119

CVSS Base Score: 10/10

Impact Subscore: 10/10

Exploitability Subscore: 10/10

Exploit range: Remote

Attack complexity: Low

Authentication: No required

Confidentiality impact: Complete

Integrity impact: Complete

Availability impact: Complete

libproxy 0.4.9 fixes a buffer overflow reported by Tomas Mraz:

http://code.google.com/p/libproxy/source/detail?r=853
https://groups.google.com/forum/?fromgroups=#!topic/libproxy/VxZ8No7mT0E
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-4504

Upstream announcement also mentions another issue - CVE-2012-4505.  It
is related, but different problem that was found in pre-0.4 versions
while investigating if they were affected by CVE-2012-4504.

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-4505

References:

http://code.google.com/p/libproxy/source/browse/trunk/libproxy/url.cpp?spec=svn853&r=853

http://code.google.com/p/libproxy/source/detail?r=853

https://groups.google.com/forum/?fromgroups=#!topic/libproxy/VxZ8No7mT0E

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2012-4504

See this note in RAW Version

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libproxy 0.4.9 PAC downloading buffer overflow

References:

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