Bug 725694 (CVE-2011-2721) - CVE-2011-2721 Clam AntiVirus: Off-by-one error by scanning message hashes
Summary: CVE-2011-2721 Clam AntiVirus: Off-by-one error by scanning message hashes
Status: CLOSED ERRATA
Alias: CVE-2011-2721
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: public=20110725,reported=20110726,sou...
Keywords: Security
Depends On: 725695 725696
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-07-26 10:29 UTC by Jan Lieskovsky
Modified: 2019-06-08 18:52 UTC (History)
8 users (show)

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Clone Of:
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Last Closed: 2011-12-09 01:21:34 UTC


Attachments (Terms of Use)

Description Jan Lieskovsky 2011-07-26 10:29:09 UTC
An off-by-one error was found in the way the hash manager of Clam AntiVirus, a GPL anti-virus toolkit for UNIX, performed scan of messages with certain hashes. A remote attacker could provide a message with specially-crafted hash signature in it, leading to denial of service (clamscan executable crash).

Upstream bug report:
[1] https://wwws.clamav.net/bugzilla/show_bug.cgi?id=2818

Relevant patch:
[2] http://git.clamav.net/gitweb?p=clamav-devel.git;a=commit;h=4842733eb3f09be61caeed83778bb6679141dbc5

Other references:
[3] https://bugzilla.novell.com/show_bug.cgi?id=708263
[4] http://git.clamav.net/gitweb?p=clamav-devel.git;a=blob_plain;f=ChangeLog;hb=clamav-0.97.2
[5] http://www.clamav.net/lang/en/

Comment 1 Jan Lieskovsky 2011-07-26 10:30:39 UTC
This issue affects the versions of the clamav package, as shipped with Fedora release of 14 and 15. Please schedule an update.

--

This issue affects the versions of the clamav package, as present within EPEL-4, EPEL-5, and EPEL-6 repositories. Please schedule an update.

Comment 2 Jan Lieskovsky 2011-07-26 10:31:37 UTC
Created clamav tracking bugs for this issue

Affects: epel-all [bug 725695]
Affects: fedora-all [bug 725696]

Comment 3 Jan Lieskovsky 2011-07-26 10:40:21 UTC
CVE Request:
[6] http://www.openwall.com/lists/oss-security/2011/07/26/3

Comment 4 Vincent Danen 2011-07-26 20:39:02 UTC
This was assigned CVE-2011-2721:

http://www.openwall.com/lists/oss-security/2011/07/26/13


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