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Re: CVE request: bzip2 CERT-FI: 20469


From: Josh Bressers <bressers () redhat com>
Date: Tue, 18 Mar 2008 10:46:00 -0400


Hey,

CERT-FI: 20469 [1] was released yesterday, and with it a new bzip2=20
release, quoting their CHANGES:

1.0.5 (10 Dec 07)
~~~~~~~~~~~~~~~~~
Security fix only.  Fixes CERT-FI 20469 as it applies to bzip2.


Reading the patch [2], it's missing a boundary check that can lead to an
over-read on the tt/ll heap-buffer. I'd call this a DoS, did anyone
else review?


I'm running version 1.0.4 through the bzip2 files now (it takes a long time
to run, there are a lot of files).  If I find the reproducer, I'll let you
know.

I saw no crashes when I ran the CERT-FI suite over bzip2 versions 1.0.1,
1.0.2, and 1.0.3.

-- 
    JB


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