USN-1481-1: PHP vulnerabilities
Ubuntu Security Notice USN-1481-1
19th June, 2012
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS
Several security issues were fixed in PHP.
- php5 - HTML-embedded scripting language interpreter
It was discovered that PHP incorrectly handled certain Tidy::diagnose
operations on invalid objects. A remote attacker could use this flaw to
cause PHP to crash, leading to a denial of service. (CVE-2012-0781)
It was discovered that PHP incorrectly handled certain multi-file upload
filenames. A remote attacker could use this flaw to cause a denial of
service, or to perform a directory traversal attack. (CVE-2012-1172)
Rubin Xu and Joseph Bonneau discovered that PHP incorrectly handled certain
Unicode characters in passwords passed to the crypt() function. A remote
attacker could possibly use this flaw to bypass authentication.
It was discovered that a Debian/Ubuntu specific patch caused PHP to
incorrectly handle empty salt strings. A remote attacker could possibly use
this flaw to bypass authentication. This issue only affected Ubuntu 10.04
LTS and Ubuntu 11.04. (CVE-2012-2317)
It was discovered that PHP, when used as a stand alone CGI processor
for the Apache Web Server, did not properly parse and filter query
strings. This could allow a remote attacker to execute arbitrary code
running with the privilege of the web server, or to perform a denial of
service. Configurations using mod_php5 and FastCGI were not vulnerable.
Alexander Gavrun discovered that the PHP Phar extension incorrectly handled
certain malformed TAR files. A remote attacker could use this flaw to
perform a denial of service, or possibly execute arbitrary code.
The problem can be corrected by updating your system to the following package version:
- Ubuntu 12.04 LTS:
- php5 5.3.10-1ubuntu3.2
- Ubuntu 11.10:
- php5 5.3.6-13ubuntu3.8
- Ubuntu 11.04:
- php5 5.3.5-1ubuntu7.10
- Ubuntu 10.04 LTS:
- php5 5.3.2-1ubuntu4.17
- Ubuntu 8.04 LTS:
- php5 5.2.4-2ubuntu5.25
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.