Bug 883358 - (CVE-2012-5468) CVE-2012-5468 bogofilter: Heap-based buffer overflow by decoding invalid base64 code (that decodes to incomplete multibyte characters)
CVE-2012-5468 bogofilter: Heap-based buffer overflow by decoding invalid base...
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20121203,repor...
: Security
Depends On: 883359 883360
Blocks:
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Reported: 2012-12-04 06:59 EST by Jan Lieskovsky
Modified: 2015-07-31 02:55 EDT (History)
3 users (show)

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Doc Type: Bug Fix
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Description Jan Lieskovsky 2012-12-04 06:59:01 EST
A heap-based buffer overflow flaw was found in the way bogolexer component of Bogofilter, fast anti-spam filtering tool by Bayesian statistical analysis, performed decoding of certain base64 strings. A remote attacker could provide a specially-crafted base64 code (decoding to incomplete multibyte characters) that, when processed, would lead to bogolexer executable crash or, potentially, arbitrary code execution with the privileges of the user running the binary.

Upstream advisory:
[1] http://bogofilter.sourceforge.net/security/bogofilter-SA-2012-01

References:
[2] http://www.openwall.com/lists/oss-security/2012/12/03/13

Relevant upstream patch:
[3] http://bogofilter.svn.sourceforge.net/viewvc/bogofilter?view=revision&revision=6973

Reproducer / regression test:
[4] http://bogofilter.svn.sourceforge.net/viewvc/bogofilter?view=revision&revision=6975
Comment 1 Jan Lieskovsky 2012-12-04 07:00:51 EST
This issue affects the versions of the bogofilter package, as shipped with Fedora release of 16 and 17. Please schedule an update.

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This issue affects the versions of the bogofilter package, as shipped with Fedora EPEL 5 and Fedora EPEL 6. Please schedule an update.
Comment 2 Jan Lieskovsky 2012-12-04 07:02:14 EST
Created bogofilter tracking bugs for this issue

Affects: fedora-all [bug 883359]
Affects: epel-all [bug 883360]
Comment 3 Fedora Update System 2012-12-13 00:57:14 EST
bogofilter-1.2.3-1.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 4 Fedora Update System 2012-12-13 00:58:50 EST
bogofilter-1.2.3-1.fc16 has been pushed to the Fedora 16 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 5 Fedora Update System 2012-12-20 19:32:46 EST
bogofilter-1.2.3-1.el6 has been pushed to the Fedora EPEL 6 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 6 Fedora Update System 2012-12-20 19:33:58 EST
bogofilter-1.2.3-1.el5 has been pushed to the Fedora EPEL 5 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 7 Fedora Update System 2013-01-11 20:12:20 EST
bogofilter-1.2.3-1.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.

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