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GnuPG "parse-packet.c" Denial of Service Vulnerability
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Secunia Advisory:
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SA20783
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Release Date:
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2006-06-23
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Last Update:
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2006-07-03
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Popularity:
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9,334 views
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Critical:
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Moderately critical
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Impact:
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DoS
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | GnuPG / gpg 1.4.x
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| CVE reference: | CVE-2006-3082
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Description:
A vulnerability has been reported in GnuPG, which potentially can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is cause due to an input validation error within "parse-packet.c" when handling the length of a message packet. This can be exploited to cause gpg to consume large amount of memory or crash via an overly large packet length in a message packet. This can be further exploited to cause an integer overflow which leads to a possible memory corruption that crashes gpg.
Successful exploitation requires that the "--no-armor" option is used.
The vulnerability has been reported in version 1.4.3 and in development version 1.9.20. Prior versions may also be affected.
Solution:
Update to version 1.4.4.
Provided and/or discovered by:
Evgeny Legerov
Changelog:
2006-07-03: Vendor issues version 1.4.4. Updated "Solution" section.
Original Advisory:
http://seclists.org/lists/fulldisclosure/2006/May/0774.html
http://cvs.gnupg.org/cgi-bin/viewcvs....et.c?rev=4157&r1=4141&r2=4157
http://lists.gnupg.org/pipermail/gnupg-announce/2006q2/000226.html
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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