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Ubuntu Security Notice USN-1481-1

Ubuntu Security Notice USN-1481-1
Posted Jun 20, 2012
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1481-1 - 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. 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. 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. Various other issues were also addressed.

tags | advisory, remote, denial of service, php, file upload
systems | linux, ubuntu
advisories | CVE-2012-0781, CVE-2012-1172, CVE-2012-2143, CVE-2012-2317, CVE-2012-2386, CVE-2012-0781, CVE-2012-1172, CVE-2012-2143, CVE-2012-2317, CVE-2012-2335, CVE-2012-2336, CVE-2012-2386
SHA-256 | ef532b3bed02d20d59b37b0ac7ce3245a50645818f614071e2b2ed22dce3926e

Ubuntu Security Notice USN-1481-1

Change Mirror Download
============================================================================
Ubuntu Security Notice USN-1481-1
June 19, 2012

php5 vulnerabilities
============================================================================

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

Summary:

Several security issues were fixed in PHP.

Software Description:
- php5: HTML-embedded scripting language interpreter

Details:

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.
(CVE-2012-2143)

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.
(CVE-2012-2335, CVE-2012-2336)

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.
(CVE-2012-2386)

Update instructions:

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

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

In general, a standard system update will make all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-1481-1
CVE-2012-0781, CVE-2012-1172, CVE-2012-2143, CVE-2012-2317,
CVE-2012-2335, CVE-2012-2336, CVE-2012-2386

Package Information:
https://launchpad.net/ubuntu/+source/php5/5.3.10-1ubuntu3.2
https://launchpad.net/ubuntu/+source/php5/5.3.6-13ubuntu3.8
https://launchpad.net/ubuntu/+source/php5/5.3.5-1ubuntu7.10
https://launchpad.net/ubuntu/+source/php5/5.3.2-1ubuntu4.17
https://launchpad.net/ubuntu/+source/php5/5.2.4-2ubuntu5.25
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