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TITLE:
GnuPG "parse_comment" Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA21297

VERIFY ADVISORY:
http://secunia.com/advisories/21297/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
GnuPG / gpg 1.4.x
http://secunia.com/product/8087/

DESCRIPTION:
Evgeny Legerov has reported a vulnerability in GnuPG, which can be
exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an input validation error in
parse_packet.c when handling certain message packets. This can be
exploited to cause GnuPG to consume large amounts of memory or crash
via an overly long comment length in a message packet.

This can further be exploited to cause an integer overflow, which
leads to possible memory corruption and crashes GnuPG.

The vulnerability has been reported in version 1.4.4. Prior versions
may also be affected.

SOLUTION:
Update to version 1.4.5.

PROVIDED AND/OR DISCOVERED BY:
Evgeny Legerov

ORIGINAL ADVISORY:
http://lists.immunitysec.com/pipermail/dailydave/2006-July/003354.html

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About:
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