PostgreSQL: Insecure temporary file use in make_oidjoins_check — GLSA 200410-16

The make_oidjoins_check script, part of the PostgreSQL package, is vulnerable to symlink attacks, potentially allowing a local user to overwrite arbitrary files with the rights of the user running the utility.

Affected Packages

dev-db/postgresql on all architectures
Affected versions <= 7.4.5-r1
Unaffected versions >= 7.4.5-r2, revision >= 7.3.7-r2, revision >= 7.3.15, revision >= 7.3.16, revision >= 7.3.18, revision >= 7.3.21

Background

PostgreSQL is an open source database based on the POSTGRES database management system. It includes several contributed scripts including the make_oidjoins_check script.

Description

The make_oidjoins_check script insecurely creates temporary files in world-writeable directories with predictable names.

Impact

A local attacker could create symbolic links in the temporary files directory, pointing to a valid file somewhere on the filesystem. When make_oidjoins_check is called, this would result in file overwrite with the rights of the user running the utility, which could be the root user.

Workaround

There is no known workaround at this time.

Resolution

All PostgreSQL users should upgrade to the latest version:

 # emerge sync
 
 # emerge -pv ">=dev-db/postgresql-7.4.5-r2"
 # emerge ">=dev-db/postgresql-7.4.5-r2"

Upgrade notes: PostgreSQL 7.3.x users should upgrade to the latest available 7.3.x version to retain database compatibility.

References

Release Date
October 18, 2004

Latest Revision
May 28, 2009: 04

Severity
normal

Exploitable
local

Bugzilla entries