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TITLE:
PWLib "PString::vsprintf()" Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA27127

VERIFY ADVISORY:
http://secunia.com/advisories/27127/

CRITICAL:
Less critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
PWLib 1.x
http://secunia.com/product/3014/

DESCRIPTION:
A vulnerability has been discovered in PWLib, which can be exploited
by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an error within the
"PString::vsprintf()" method in src/ptlib/common/contain.cxx. This
can be exploited to cause a memory corruption by e.g. tricking an
application using the library to use this function with a string
longer than 1000 bytes.

The vulnerability is confirmed in version 1.10.4-1 for Fedora Core 6.
Other versions may also be affected.

SOLUTION:
Use applications linked against PWLib in trusted environments and
trusted data only.

PROVIDED AND/OR DISCOVERED BY:
Reported in a Red Hat advisory.

ORIGINAL ADVISORY:
http://rhn.redhat.com/errata/RHSA-2007-0932.html

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