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TITLE:
PostgreSQL Character Conversion and tsearch2 Module Vulnerabilities

SECUNIA ADVISORY ID:
SA15217

VERIFY ADVISORY:
http://secunia.com/advisories/15217/

CRITICAL:
Moderately critical

IMPACT:
Unknown, Privilege escalation, DoS

WHERE:
>From local network

SOFTWARE:
PostgreSQL 7.x
http://secunia.com/product/506/
PostgreSQL 8.x
http://secunia.com/product/4587/

DESCRIPTION:
Two vulnerabilities have been reported in PostgreSQL, which can be
exploited by malicious users to cause a DoS (Denial of Service) or
potentially gain escalated privileges.

1) Missing validation of arguments supplied to the functions
supporting client-to-server character set conversion can be exploited
by unprivileged users when calling the functions from SQL commands.

The vulnerability affects versions 7.3.* through 8.0.*.

2) The contrib/tsearch2 module misdeclares the return type of several
functions, which breaks the type safety of "internal". The impact has
reportedly not been investigated, but can at least crash the
backend.

The vulnerability affects versions 7.4 and later with the
contrib/tsearch2 module installed.

SOLUTION:
The vendor has published workarounds (see vendor advisory).

PROVIDED AND/OR DISCOVERED BY:
Reported by vendor.

ORIGINAL ADVISORY:
http://www.postgresql.org/about/news.315

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About:
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