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Message-ID: <540070FA.8020402@redhat.com>
Date: Fri, 29 Aug 2014 14:24:26 +0200
From: Florian Weimer <fweimer@...hat.com>
To: oss-security@...ts.openwall.com
Subject: CVE request: glibc character set conversion from IBM code pages
In 2012, a crasher in IBM930 decoding was reported and fixed:
<https://sourceware.org/bugzilla/show_bug.cgi?id=14134>
<https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=6e230d11837f3a>
This change went into glibc 2.16.
Today, Adhemerval Zanella Netto reported in additional code page
decoding functions (IBM933, IBM935, IBM937, IBM939, IBM1364):
<https://sourceware.org/bugzilla/show_bug.cgi?id=17325>
<https://sourceware.org/ml/libc-alpha/2014-08/msg00473.html>
Upstream commit is still pending.
These crashers are out-of-bounds reads at a fixed offset relative to the
data segment of a DSO, and in all cases I've seen, they were right in
the middle of an unmapped segment of the same DSO. This means that
these bugs are just crashers, but they can still result in
denial-of-service conditions.
Since the affected version ranges are not identical, this needs two
separate CVE identifiers, probably one from 2012 and one from 2014.
--
Florian Weimer / Red Hat Product Security
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