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Ubuntu Security Notice USN-1126-1

Ubuntu Security Notice USN-1126-1
Posted Apr 29, 2011
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 1126-1 - 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/. 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. 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. 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. Various other issues with PHP 5 were also identified and resolved.

tags | advisory, denial of service, overflow, arbitrary, local, php
systems | linux, ubuntu
advisories | CVE-2011-1144, CVE-2006-7243, CVE-2010-4697, CVE-2010-4698, CVE-2011-0420, CVE-2011-0421, CVE-2011-0441, CVE-2011-0708, CVE-2011-1072, CVE-2011-1092, CVE-2011-1144, CVE-2011-1148, CVE-2011-1153, CVE-2011-1464, CVE-2011-1466, CVE-2011-1467, CVE-2011-1468, CVE-2011-1469, CVE-2011-1470, CVE-2011-1471
SHA-256 | 0d1f20dac678d851bff44d385515866f5fb9db107a028a3a3bb2ee850d32fc53

Ubuntu Security Notice USN-1126-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-1126-1
April 29, 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

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

References:
CVE-2006-7243, CVE-2010-4697, CVE-2010-4698, CVE-2011-0420,
CVE-2011-0421, CVE-2011-0441, CVE-2011-0708, CVE-2011-1072,
CVE-2011-1092, CVE-2011-1144, CVE-2011-1148, CVE-2011-1153,
CVE-2011-1464, CVE-2011-1466, CVE-2011-1467, CVE-2011-1468,
CVE-2011-1469, CVE-2011-1470, CVE-2011-1471

Package Information:
https://launchpad.net/ubuntu/+source/php5/5.3.5-1ubuntu7.1
https://launchpad.net/ubuntu/+source/php5/5.3.3-1ubuntu9.4
https://launchpad.net/ubuntu/+source/php5/5.3.2-1ubuntu4.8
https://launchpad.net/ubuntu/+source/php5/5.2.10.dfsg.1-2ubuntu6.9
https://launchpad.net/ubuntu/+source/php5/5.2.4-2ubuntu5.15
https://launchpad.net/ubuntu/+source/php5/5.1.2-1ubuntu3.22

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