USN-1126-1: PHP vulnerabilities

29 April 2011

php5 vulnerabilities

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

  • Ubuntu 11.04
  • Ubuntu 10.10
  • Ubuntu 10.04 LTS
  • Ubuntu 9.10
  • Ubuntu 8.04 LTS
  • Ubuntu 6.06 LTS

Summary

Multiple vulnerabilities in PHP.

Software Description

  • php5 - HTML-embedded scripting language interpreter

Details

Stephane Chazelas discovered that the /etc/cron.d/php5 cron job for PHP 5.3.5 allows local users to delete arbitrary files via a symlink attack on a directory under /var/lib/php5/. (CVE-2011-0441)

Raphael Geisert and Dan Rosenberg discovered that the PEAR installer allows local users to overwrite arbitrary files via a symlink attack on the package.xml file, related to the (1) download_dir, (2) cache_dir, (3) tmp_dir, and (4) pear-build-download directories. (CVE-2011-1072, CVE-2011-1144)

Ben Schmidt discovered that a use-after-free vulnerability in the PHP Zend engine could allow an attacker to cause a denial of service (heap memory corruption) or possibly execute arbitrary code. (CVE-2010-4697)

Martin Barbella discovered a buffer overflow in the PHP GD extension that allows an attacker to cause a denial of service (application crash) via a large number of anti- aliasing steps in an argument to the imagepstext function. (CVE-2010-4698)

It was discovered that PHP accepts the \0 character in a pathname, which might allow an attacker to bypass intended access restrictions by placing a safe file extension after this character. This issue is addressed in Ubuntu 10.04 LTS, Ubuntu 10.10, and Ubuntu 11.04. (CVE-2006-7243)

Maksymilian Arciemowicz discovered that the grapheme_extract function in the PHP Internationalization extension (Intl) for ICU allow an attacker to cause a denial of service (crash) via an invalid size argument, which triggers a NULL pointer dereference. This issue affected Ubuntu 10.04 LTS, Ubuntu 10.10, and Ubuntu 11.04. (CVE-2011-0420)

Maksymilian Arciemowicz discovered that the _zip_name_locate function in the PHP Zip extension does not properly handle a ZIPARCHIVE::FL_UNCHANGED argument, which might allow an attacker to cause a denial of service (NULL pointer dereference) via an empty ZIP archive. This issue affected Ubuntu 8.04 LTS, Ubuntu 9.10, Ubuntu 10.04 LTS, Ubuntu 10.10, and Ubuntu 11.04. (CVE-2011-0421)

Luca Carettoni discovered that the PHP Exif extension performs an incorrect cast on 64bit platforms, which allows a remote attacker to cause a denial of service (application crash) via an image with a crafted Image File Directory (IFD). (CVE-2011-0708)

Jose Carlos Norte discovered that an integer overflow in the PHP shmop extension could allow an attacker to cause a denial of service (crash) and possibly read sensitive memory function. (CVE-2011-1092)

Felipe Pena discovered that a use-after-free vulnerability in the substr_replace function allows an attacker to cause a denial of service (memory corruption) or possibly execute arbitrary code. (CVE-2011-1148)

Felipe Pena discovered multiple format string vulnerabilities in the PHP phar extension. These could allow an attacker to obtain sensitive information from process memory, cause a denial of service (memory corruption), or possibly execute arbitrary code. This issue affected Ubuntu 10.04 LTS, Ubuntu 10.10, and Ubuntu 11.04.(CVE-2011-1153)

It was discovered that a buffer overflow occurs in the strval function when the precision configuration option has a large value. The default compiler options for Ubuntu 8.04 LTS, Ubuntu 9.10, Ubuntu 10.04 LTS, Ubuntu 10.10, and Ubuntu 11.04 should reduce the vulnerability to a denial of service. (CVE-2011-1464)

It was discovered that an integer overflow in the SdnToJulian function in the PHP Calendar extension could allow an attacker to cause a denial of service (application crash). (CVE-2011-1466)

Tomas Hoger discovered that an integer overflow in the NumberFormatter::setSymbol function in the PHP Intl extension could allow an attacker to cause a denial of service (application crash). This issue affected Ubuntu 10.04 LTS, Ubuntu 10.10, and Ubuntu 11.04. (CVE-2011-1467)

It was discovered that multiple memory leaks in the PHP OpenSSL extension might allow a remote attacker to cause a denial of service (memory consumption). This issue affected Ubuntu 10.04 LTS, Ubuntu 10.10, and Ubuntu 11.04. (CVE-2011-1468)

Daniel Buschke discovered that the PHP Streams component in PHP handled types improperly, possibly allowing an attacker to cause a denial of service (application crash). (CVE-2011-1469)

It was discovered that the PHP Zip extension could allow an attacker to cause a denial of service (application crash) via a ziparchive stream that is not properly handled by the stream_get_contents function. This issue affected Ubuntu 8.04 LTS, Ubuntu 9.10, Ubuntu 10.04 LTS, Ubuntu 10.10, and Ubuntu 11.04. (CVE-2011-1470)

It was discovered that an integer signedness error in the PHP Zip extension could allow an attacker to cause a denial of service (CPU consumption) via a malformed archive file. This issue affected Ubuntu 8.04 LTS, Ubuntu 9.10, Ubuntu 10.04 LTS, Ubuntu 10.10, and Ubuntu 11.04. (CVE-2011-1470) (CVE-2011-1471)

Update instructions

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

Ubuntu 11.04
libapache2-mod-php5 - 5.3.5-1ubuntu7.1
php-pear - 5.3.5-1ubuntu7.1
php5 - 5.3.5-1ubuntu7.1
php5-cgi - 5.3.5-1ubuntu7.1
php5-cli - 5.3.5-1ubuntu7.1
php5-common - 5.3.5-1ubuntu7.1
php5-curl - 5.3.5-1ubuntu7.1
php5-dev - 5.3.5-1ubuntu7.1
php5-gd - 5.3.5-1ubuntu7.1
php5-intl - 5.3.5-1ubuntu7.1
Ubuntu 10.10
libapache2-mod-php5 - 5.3.3-1ubuntu9.4
php-pear - 5.3.3-1ubuntu9.4
php5 - 5.3.3-1ubuntu9.4
php5-cgi - 5.3.3-1ubuntu9.4
php5-cli - 5.3.3-1ubuntu9.4
php5-common - 5.3.3-1ubuntu9.4
php5-curl - 5.3.3-1ubuntu9.4
php5-dev - 5.3.3-1ubuntu9.4
php5-gd - 5.3.3-1ubuntu9.4
php5-intl - 5.3.3-1ubuntu9.4
Ubuntu 10.04 LTS
libapache2-mod-php5 - 5.3.2-1ubuntu4.8
php-pear - 5.3.2-1ubuntu4.8
php5 - 5.3.2-1ubuntu4.8
php5-cgi - 5.3.2-1ubuntu4.8
php5-cli - 5.3.2-1ubuntu4.8
php5-common - 5.3.2-1ubuntu4.8
php5-curl - 5.3.2-1ubuntu4.8
php5-dev - 5.3.2-1ubuntu4.8
php5-gd - 5.3.2-1ubuntu4.8
php5-intl - 5.3.2-1ubuntu4.8
Ubuntu 9.10
libapache2-mod-php5 - 5.2.10.dfsg.1-2ubuntu6.9
php-pear - 5.2.10.dfsg.1-2ubuntu6.9
php5 - 5.2.10.dfsg.1-2ubuntu6.9
php5-cgi - 5.2.10.dfsg.1-2ubuntu6.9
php5-cli - 5.2.10.dfsg.1-2ubuntu6.9
php5-common - 5.2.10.dfsg.1-2ubuntu6.9
php5-curl - 5.2.10.dfsg.1-2ubuntu6.9
php5-dev - 5.2.10.dfsg.1-2ubuntu6.9
php5-gd - 5.2.10.dfsg.1-2ubuntu6.9
Ubuntu 8.04 LTS
libapache2-mod-php5 - 5.2.4-2ubuntu5.15
php-pear - 5.2.4-2ubuntu5.15
php5 - 5.2.4-2ubuntu5.15
php5-cgi - 5.2.4-2ubuntu5.15
php5-cli - 5.2.4-2ubuntu5.15
php5-common - 5.2.4-2ubuntu5.15
php5-curl - 5.2.4-2ubuntu5.15
php5-dev - 5.2.4-2ubuntu5.15
php5-gd - 5.2.4-2ubuntu5.15
Ubuntu 6.06 LTS
libapache2-mod-php5 - 5.1.2-1ubuntu3.22
php-pear - 5.1.2-1ubuntu3.22
php5 - 5.1.2-1ubuntu3.22
php5-cgi - 5.1.2-1ubuntu3.22
php5-cli - 5.1.2-1ubuntu3.22
php5-common - 5.1.2-1ubuntu3.22
php5-curl - 5.1.2-1ubuntu3.22
php5-dev - 5.1.2-1ubuntu3.22
php5-gd - 5.1.2-1ubuntu3.22

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.

References