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Ubuntu alert USN-1229-1 (postgresql-8.3, postgresql-8.4)
========================================================================== Ubuntu Security Notice USN-1229-1 October 13, 2011 postgresql-8.3, postgresql-8.4 vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 11.04 - Ubuntu 10.10 - Ubuntu 10.04 LTS - Ubuntu 8.04 LTS Summary: PostgreSQL incorrectly handled blowfish passwords. Software Description: - postgresql-8.4: Object-relational SQL database - postgresql-8.3: Object-relational SQL database Details: It was discovered that the blowfish algorithm in the pgcrypto module incorrectly handled certain 8-bit characters, resulting in the password hashes being easier to crack than expected. An attacker who could obtain the password hashes would be able to recover the plaintext with less effort. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 11.04: postgresql-8.4 8.4.9-0ubuntu0.11.04 Ubuntu 10.10: postgresql-8.4 8.4.9-0ubuntu0.10.10 Ubuntu 10.04 LTS: postgresql-8.4 8.4.9-0ubuntu0.10.04 Ubuntu 8.04 LTS: postgresql-8.3 8.3.16-0ubuntu0.8.04 In general, a standard system update will make all the necessary changes. References: http://www.ubuntu.com/usn/usn-1229-1 CVE-2011-2483 Package Information: https://launchpad.net/ubuntu/+source/postgresql-8.4/8.4.9... https://launchpad.net/ubuntu/+source/postgresql-8.4/8.4.9... https://launchpad.net/ubuntu/+source/postgresql-8.4/8.4.9... https://launchpad.net/ubuntu/+source/postgresql-8.3/8.3.1... -- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security... (Log in to post comments)
Ubuntu security update to postgresql-8.3, postgresql-8.4 Posted Oct 13, 2011 23:02 UTC (Thu) by bjartur (guest, #67801) [Link]
This is a severe understatement. Passwords containing only an equal number characters outside of ASCII, and characters outside of ASCII only all produce equivelent hashes. This is quite rare for ISO 8859-1 encoded text, but I wonder if there are any UTF-8 passwords with no single-octet characters out there on eastern hosts. Hosts with users who use non-latin scripts are extremely vulnurable to birthday attacks.
Disclaimer: My personal httpd is a custom (read: unsecured) Python script I wrote when I was ~13yo running as root on an outdated version of Ubuntu Desktop. And I admit so publicly on the Internet. Question my sanity.
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