libungif NULL Pointer Dereference and Memory Access Error May Let Remote Users Execute Arbitrary Code
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SecurityTracker Alert ID: 1015149
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SecurityTracker URL: http://securitytracker.com/id?1015149
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CVE Reference: CVE-2005-2974
, CVE-2005-3350
(Links to External Site)
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Date: Nov 3 2005
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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
Vendor Confirmed: Yes
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Version(s): prior to 4.1.4
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Description: A vulnerability was reported in libungif. A remote user may be able to cause arbitrary code to be executed on the target system.
A remote user can create a specially crafted GIF image that, when processed by the target user, will cause the affected application
to crash or potentially execute arbitrary code.
In one case, a specially crafted GIF image can trigger a NULL pointer dereference
[CVE-2005-2974]. In another case, a specially crafted GIF image can trigger an out-of-bounds memory write access [CVE-2005-3350].
Applications
that use libungif are affected.
Chris Evans and Daniel Eisenbud discovered these vulnerabilities.
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Impact: A remote user can create a file that, when processed, will cause the affected application to crash or execute arbitrary code.
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Solution: The vendor has issued a fixed version (4.1.4), available at:
http://sourceforge.net/project/showfiles.php?group_id=102202
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Vendor URL: sourceforge.net/projects/libungif (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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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: Thu, 3 Nov 2005 16:44:52 -0500
Subject: libungif vulnerabilities
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Red Hat reported:
Several bugs in the way libungif decodes GIF images were discovered. An
attacker could create a carefully crafted GIF image file in such a way that
it could cause an application linked with libungif to crash or execute
arbitrary code when the file is opened by a victim. The Common
Vulnerabilities and Exposures project has assigned the names CVE-2005-2974
and CVE-2005-3350 to these issues.
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