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[SA17681] IPUpdate "memmcat" Buffer Overflow Vulnerability

From: Secunia Security Advisories (sec-advsecunia.com)
Date: Tue Nov 22 2005 - 10:17:05 CST

TITLE:
IPUpdate "memmcat" Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA17681

VERIFY ADVISORY:
http://secunia.com/advisories/17681/

CRITICAL:
Less critical

IMPACT:
System access

WHERE:
From remote

SOFTWARE:
IPUpdate 1.x
http://secunia.com/product/6180/

DESCRIPTION:
A vulnerability has been reported in IPUpdate, which potentially can
be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to a boundary error in the
"memmcat()" function when appending input into a heap-based buffer.
This can cause a heap-based buffer overflow when an overly long reply
is received from a DNS server.

Successful exploitation requires that the user uses IPUpdate with a
malicious DNS server.

Note: An unspecified boundary error that can cause a buffer overflow
when formatting tsig records has also been reported.

SOLUTION:
Update to version 1.1.0.
http://sourceforge.net/project/showfiles.php?group_id=146709

PROVIDED AND/OR DISCOVERED BY:
Reported by vendor.

ORIGINAL ADVISORY:
http://sourceforge.net/project/shownotes.php?release_id=372666

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