USN-1789-1: PostgreSQL vulnerabilities

Ubuntu Security Notice USN-1789-1

4th April, 2013

postgresql-8.3, postgresql-8.4, postgresql-9.1 vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 12.10
  • Ubuntu 12.04 LTS
  • Ubuntu 11.10
  • Ubuntu 10.04 LTS
  • Ubuntu 8.04 LTS

Summary

Several security issues were fixed in PostgreSQL.

Software description

  • postgresql-8.3 - Object-relational SQL database
  • postgresql-8.4 - Object-relational SQL database
  • postgresql-9.1 - Object-relational SQL database

Details

Mitsumasa Kondo and Kyotaro Horiguchi discovered that PostgreSQL
incorrectly handled certain connection requests containing database names
starting with a dash. A remote attacker could use this flaw to damage or
destroy files within a server's data directory. This issue only applied to
Ubuntu 11.10, Ubuntu 12.04 LTS, and Ubuntu 12.10. (CVE-2013-1899)

Marko Kreen discovered that PostgreSQL incorrectly generated random
numbers. An authenticated attacker could use this flaw to possibly guess
another database user's random numbers. (CVE-2013-1900)

Noah Misch discovered that PostgreSQL incorrectly handled certain privilege
checks. An unprivileged attacker could use this flaw to possibly interfere
with in-progress backups. This issue only applied to Ubuntu 11.10,
Ubuntu 12.04 LTS, and Ubuntu 12.10. (CVE-2013-1901)

Update instructions

The problem can be corrected by updating your system to the following package version:

Ubuntu 12.10:
postgresql-9.1 9.1.9-0ubuntu12.10
Ubuntu 12.04 LTS:
postgresql-9.1 9.1.9-0ubuntu12.04
Ubuntu 11.10:
postgresql-9.1 9.1.9-0ubuntu11.10
Ubuntu 10.04 LTS:
postgresql-8.4 8.4.17-0ubuntu10.04
Ubuntu 8.04 LTS:
postgresql-8.3 8.3.23-0ubuntu8.04.1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

This update uses a new upstream release, which includes additional bug
fixes. In general, a standard system update will make all the necessary
changes.

References

CVE-2013-1899, CVE-2013-1900, CVE-2013-1901