Vulnerability Assessment & Network Security Forums
If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.
Vulnerability Assessment Details
Check for the version of the postgresql package
Detailed Explanation for this Vulnerability Assessment
The remote host is missing the patch for the advisory MDKSA-2002:062-1 (postgresql).
Vulnerabilities were discovered in the Postgresql relational database by Mordred
Labs. These vulnerabilities are buffer overflows in the rpad(), lpad(),
repeat(), and cash_words() functions. The Postgresql developers also fixed a
buffer overflow in functions that deal with time/date and timezone.
Finally, more buffer overflows were discovered by Mordred Labs in the 7.2.2
release that are currently only fixed in CVS. These buffer overflows exist in
the circle_poly(), path_encode(), and path_addr() functions.
In order for these vulnerabilities to be exploited, a possible hacker must be able to
query the server somehow. However, this cannot directly lead to root privilege
because the server runs as the postgresql user.
Prior to upgrading, users should dump their database and retain it as backup.
You can dump the database by using:
$ pg_dumpall > db.out
If you need to restore from the backup, you can do so by using:
$ psql -f db.out template1
The previous update missed a few small fixes, including a buffer overflow in the
cash_words() function that permits local users to cause a DoS and possibly
execute arbitrary code via a malformed argument in Postgresql 7.2 and earlier.
As well, buffer overflows in the TZ and SET TIME ZONE environment variables for
Postgresql 7.2.1 and earlier can permit local users to cause a DoS and possibly
execute arbitrary code.
Solution : http://wwwnew.mandriva.com/security/advisories?name=MDKSA-2002:062-1
Network Security Threat Level: High
Networks Security ID: 5527, 5528, 6610, 6612, 6614, 6615
Vulnerability Assessment Copyright: This script is Copyright (C) 2004 Tenable Network Security
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