Several vulnerabilities were discovered in PHP, which could lead to denial of service or potentially the execution of arbitrary code.

  - CVE-2010-2531     An information leak was found in the var_export()     function.

  - CVE-2011-0421     The Zip module could crash.

  - CVE-2011-0708     An integer overflow was discovered in the Exif module.

  - CVE-2011-1466     An integer overflow was discovered in the Calendar     module.

  - CVE-2011-1471     The Zip module was prone to denial of service through     malformed archives.

  - CVE-2011-2202     Path names in form based file uploads (RFC 1867) were     incorrectly validated.

This update also fixes two bugs, which are not treated as security issues, but fixed nonetheless, see README.Debian.security for details on the scope of security support for PHP (CVE-2011-0420, CVE-2011-1153 ).

Multiple vulnerabilities has been identified and fixed in php :

The _zip_name_locate function in zip_name_locate.c in the Zip extension in PHP before 5.3.6 does not properly handle a ZIPARCHIVE::FL_UNCHANGED argument, which might allow context-dependent attackers to cause a denial of service (application crash) via an empty ZIP archive that is processed with a (1) locateName or (2) statName operation (CVE-2011-0421).

exif.c in the Exif extension in PHP before 5.3.6 on 64-bit platforms performs an incorrect cast, which allows remote attackers to cause a denial of service (application crash) via an image with a crafted Image File Directory (IFD) that triggers a buffer over-read (CVE-2011-0708).

Integer overflow in ext/shmop/shmop.c in PHP before 5.3.6 allows context-dependent attackers to cause a denial of service (crash) and possibly read sensitive memory via a large third argument to the shmop_read function (CVE-2011-1092).

Multiple format string vulnerabilities in phar_object.c in the phar extension in PHP 5.3.5 and earlier allow context-dependent attackers to obtain sensitive information from process memory, cause a denial of service (memory corruption), or possibly execute arbitrary code via format string specifiers in an argument to a class method, leading to an incorrect zend_throw_exception_ex call (CVE-2011-1153).

Buffer overflow in the strval function in PHP before 5.3.6, when the precision configuration option has a large value, might allow context-dependent attackers to cause a denial of service (application crash) via a small numerical value in the argument (CVE-2011-1464).

Integer overflow in the SdnToJulian function in the Calendar extension in PHP before 5.3.6 allows context-dependent attackers to cause a denial of service (application crash) via a large integer in the first argument to the cal_from_jd function (CVE-2011-1466).

Unspecified vulnerability in the NumberFormatter::setSymbol (aka numfmt_set_symbol) function in the Intl extension in PHP before 5.3.6 allows context-dependent attackers to cause a denial of service (application crash) via an invalid argument, a related issue to CVE-2010-4409 (CVE-2011-1467).

Multiple memory leaks in the OpenSSL extension in PHP before 5.3.6 might allow remote attackers to cause a denial of service (memory consumption) via (1) plaintext data to the openssl_encrypt function or (2) ciphertext data to the openssl_decrypt function (CVE-2011-1468).

Unspecified vulnerability in the Streams component in PHP before 5.3.6 allows context-dependent attackers to cause a denial of service (application crash) by accessing an ftp:// URL during use of an HTTP proxy with the FTP wrapper (CVE-2011-1469).

The Zip extension in PHP before 5.3.6 allows context-dependent attackers to cause a denial of service (application crash) via a ziparchive stream that is not properly handled by the stream_get_contents function (CVE-2011-1470).

Integer signedness error in zip_stream.c in the Zip extension in PHP before 5.3.6 allows context-dependent attackers to cause a denial of service (CPU consumption) via a malformed archive file that triggers errors in zip_fread function calls (CVE-2011-1471).

The updated php packages have been upgraded to 5.3.6 which is not vulnerable to these issues.

Additionally some of the PECL extensions has been upgraded and/or rebuilt for the new php version.

USN 1126-1 fixed several vulnerabilities in PHP. The fix for CVE-2010-4697 introduced an incorrect reference counting regression in the Zend engine that caused the PHP interpreter to segfault. This regression affects Ubuntu 6.06 LTS and Ubuntu 8.04 LTS.

The fixes for CVE-2011-1072 and CVE-2011-1144 introduced a regression in the PEAR installer that prevented it from creating its cache directory and reporting errors correctly.

We apologize for the inconvenience.

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).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Published	Updated	Severity
55486	Debian DSA-2266-1 : php5 - several vulnerabilities	Nessus	Debian Local Security Checks	7/5/2011	1/4/2021	high
52958	Mandriva Linux Security Advisory : php (MDVSA-2011:053)	Nessus	Mandriva Local Security Checks	3/24/2011	1/6/2021	high
55087	Ubuntu 6.06 LTS / 8.04 LTS / 9.10 / 10.04 LTS / 10.10 / 11.04 : php5 regressions (USN-1126-2)	Nessus	Ubuntu Local Security Checks	6/13/2011	9/19/2019	high

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