GnuPG Integer Overflow in Processing User ID Values May Let Remote Users Execute Arbitrary Code
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SecurityTracker Alert ID: 1016519
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SecurityTracker URL: http://securitytracker.com/id?1016519
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CVE Reference: CVE-2006-3082
(Links to External Site)
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OSVDB Reference: 26770
(Links to External Site)
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Date: Jul 18 2006
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Impact: Denial of service via network, Execution of arbitrary code via network, User access via network
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Fix Available: Yes
Exploit Included: Yes
Vendor Confirmed: Yes
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Version(s): 1.4.3 and prior versions
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Description: A vulnerability was reported in GnuPG (Gnu Privacy Guard). A remote user may be able to cause arbitrary code to be executed on the target user's system.
A remote user can create a GnuPG signature with specially crafted User ID value that, when processed by the target user, will trigger
an integer overflow and cause the target user's application to crash or potentially execute arbitrary code. The code will run with
the privileges of the target user.
The vulnerability resides in 'parse-packet.c'.
Evgeny Legerov reported this vulnerability.
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Impact: A remote user can create a signature that, when processed by the target user, will execute arbitrary code on the target user's system or cause the target user's application to crash.
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Solution: The vendor has issued a fixed version (1.4.4).
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Vendor URL: www.gnupg.org/ (Links to External Site)
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Cause: Boundary error
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Underlying OS: Linux (Any), UNIX (Any)
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Reported By:
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Message History:
This archive entry has one or more follow-up message(s) listed below.
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Source Message Contents
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Date: Wed, 31 May 2006 15:55:48 +0400 (MSD)
From: Evgeny Legerov <research_at_gleg.net>
Subject: GnuPG fun
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Hi,
Interesting GnuPG 1.4.3 bug:
$ perl -e 'print "\xcd\xff\xff\xff\xff\xfe"'| /var/gnupg/bin/gpg --no-armor
gpg: /home/ggg/.gnupg/options:82: deprecated option "honor-http-proxy"
gpg: please use "keyserver-options http-proxy" instead
gpg: Segmentation fault caught ... exiting
Segmentation fault
Regards,
Evgeny Legerov
www.gleg.net
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