oss-security - CVE Request -- Clam AntiVirus -- v0.97.2 -- Off-by-one error by scanning message hashes

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Date: Tue, 26 Jul 2011 12:37:59 +0200
From: Jan Lieskovsky <jlieskov@...hat.com>
To: "Steven M. Christey" <coley@...us.mitre.org>
CC: oss-security@...ts.openwall.com, aCaB <acab@...mav.net>,
        Török Edvin <edwin@...mav.net>
Subject: CVE Request -- Clam AntiVirus -- v0.97.2 -- Off-by-one error by scanning
 message hashes

Hello Josh, Steve, vendors,

   based on:
   [1] 
http://git.clamav.net/gitweb?p=clamav-devel.git;a=blob_plain;f=ChangeLog;hb=clamav-0.97.2

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:
[2] https://wwws.clamav.net/bugzilla/show_bug.cgi?id=2818

Relevant patch:
[3] 
http://git.clamav.net/gitweb?p=clamav-devel.git;a=commit;h=4842733eb3f09be61caeed83778bb6679141dbc5

Other references:
[4] https://bugzilla.novell.com/show_bug.cgi?id=708263
[5] 
http://git.clamav.net/gitweb?p=clamav-devel.git;a=blob_plain;f=ChangeLog;hb=clamav-0.97.2
[6] http://www.clamav.net/lang/en/
[7] https://bugzilla.redhat.com/show_bug.cgi?id=725694

Note: The rest of the issues fixed in [1] seem to be just bug fixes.
       Cc-ed upstream Clam Antivirus maintainers to confirm this (that
       there is only one issue with security implications) and correct
       the description of the issue, if necessary (just guessing that
       "cli_hm_scan()" stands for
       command_line_interface_hash_manager_scan, since it doesn't seem
       to be described in the code anywhere).

Josh, Steve, could you allocate a CVE id for this?

Thank you && Regards, Jan.
--
Jan iankko Lieskovsky / Red Hat Security Response Team

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