The Zend Engine in PHP 4.x before 4.4.7, and 5.x before 5.2.2, allows remote attackers to cause a denial of service (stack exhaustion and PHP crash) via deeply nested arrays, which trigger deep recursion in the variable destruction routines.

The remote BIG-IP device is missing a patch required by a security advisory.

From Red Hat Security Advisory 2007:0155 :

Updated PHP packages that fix several security issues are now available for Red Hat Enterprise Linux 3 and 4.

This update has been rated as having important security impact by the Red Hat Security Response Team.

PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Web server.

A denial of service flaw was found in the way PHP processed a deeply nested array. A remote attacker could cause the PHP interpreter to crash by submitting an input variable with a deeply nested array.
(CVE-2007-1285)

A flaw was found in the way PHP's unserialize() function processed data. If a remote attacker was able to pass arbitrary data to PHP's unserialize() function, they could possibly execute arbitrary code as the apache user. (CVE-2007-1286)

A flaw was found in the way the mbstring extension set global variables. A script which used the mb_parse_str() function to set global variables could be forced to enable the register_globals configuration option, possibly resulting in global variable injection.
(CVE-2007-1583)

A double free flaw was found in PHP's session_decode() function. If a remote attacker was able to pass arbitrary data to PHP's session_decode() function, they could possibly execute arbitrary code as the apache user. (CVE-2007-1711)

A flaw was discovered in the way PHP's mail() function processed header data. If a script sent mail using a Subject header containing a string from an untrusted source, a remote attacker could send bulk e-mail to unintended recipients. (CVE-2007-1718)

A heap based buffer overflow flaw was discovered in PHP's gd extension. A script that could be forced to process WBMP images from an untrusted source could result in arbitrary code execution.
(CVE-2007-1001)

A buffer over-read flaw was discovered in PHP's gd extension. A script that could be forced to write arbitrary string using a JIS font from an untrusted source could cause the PHP interpreter to crash.
(CVE-2007-0455)

Users of PHP should upgrade to these updated packages which contain backported patches to correct these issues.

A heap-based buffer overflow vulnerability was found in PHP's gd extension. A script that could be forced to process WBMP images from an untrusted source could result in arbitrary code execution (CVE-2007-1001).

A DoS flaw was found in how PHP processed a deeply nested array. A remote attacker could cause the PHP intrerpreter to creash by submitting an input variable with a deeply nested array (CVE-2007-1285).

The internal filter module in PHP in certain instances did not properly strip HTML tags, which allowed a remote attacker conduct cross-site scripting (XSS) attacks (CVE-2007-1454).

A vulnerability in the way the mbstring extension set global variables was discovered where a script using the mb_parse_str() function to set global variables could be forced to to enable the register_globals configuration option, possibly resulting in global variable injection (CVE-2007-1583).

A vulnerability in how PHP's mail() function processed header data was discovered. If a script sent mail using a subject header containing a string from an untrusted source, a remote attacker could send bulk email to unintended recipients (CVE-2007-1718).

Updated packages have been patched to correct these issues. Also note that the default use of Suhosin helped to protect against some of these issues prior to patching.

New php-4.4.8 packages are available for Slackware 10.2 and 11.0 to fix security issues.

The following issues have been fixed :

  - missing open_basedir and safe_mode restriction.
    (CVE-2007-3007)

  - chunk_split() integer overflow. (CVE-2007-2872)

  - DoS condition in libgd's image processing.
    (CVE-2007-2756)

  - possible super-global overwrite inside     import_request_variables(). (CVE-2007-1396)

  - buffer overflow inside user_filter_factory_create().
    (CVE-2007-2511)

  - remotely trigger-able buffer overflow inside bundled     libxmlrpc. (CVE-2007-1864)

  - CRLF injection inside ftp_putcmd(). (CVE-2007-2509)

  - remotely trigger-able buffer overflow inside     make_http_soap_request(). (CVE-2007-2510)

  - MOPB-41-2007:PHP 5 sqlite_udf_decode_binary() Buffer     Overflow Vulnerability. (CVE-2007-0906)

  - MOPB-03-2007: deep recursion DoS (CVE-2007-1285)

USN-549-1 fixed vulnerabilities in PHP. However, some upstream changes were incomplete, which caused crashes in certain situations with Ubuntu 7.10. This update fixes the problem.

We apologize for the inconvenience.

It was discovered that the wordwrap function did not correctly check lengths. Remote attackers could exploit this to cause a crash or monopolize CPU resources, resulting in a denial of service.
(CVE-2007-3998)

Integer overflows were discovered in the strspn and strcspn functions. Attackers could exploit this to read arbitrary areas of memory, possibly gaining access to sensitive information. (CVE-2007-4657)

Stanislav Malyshev discovered that money_format function did not correctly handle certain tokens. If a PHP application were tricked into processing a bad format string, a remote attacker could execute arbitrary code with application privileges. (CVE-2007-4658)

It was discovered that the php_openssl_make_REQ function did not correctly check buffer lengths. A remote attacker could send a specially crafted message and execute arbitrary code with application privileges. (CVE-2007-4662)

It was discovered that certain characters in session cookies were not handled correctly. A remote attacker could injection values which could lead to altered application behavior, potentially gaining additional privileges.
(CVE-2007-3799)

Gerhard Wagner discovered that the chunk_split function did not correctly handle long strings. A remote attacker could exploit this to execute arbitrary code with application privileges. (CVE-2007-2872, CVE-2007-4660, CVE-2007-4661)

Stefan Esser discovered that deeply nested arrays could be made to fill stack space. A remote attacker could exploit this to cause a crash or monopolize CPU resources, resulting in a denial of service. (CVE-2007-1285, CVE-2007-4670)

Rasmus Lerdorf discovered that the htmlentities and htmlspecialchars functions did not correctly stop when handling partial multibyte sequences. A remote attacker could exploit this to read certain areas of memory, possibly gaining access to sensitive information. (CVE-2007-5898)

It was discovered that the output_add_rewrite_var fucntion would sometimes leak session id information to forms targeting remote URLs. Malicious remote sites could use this information to gain access to a PHP application user's login credentials. (CVE-2007-5899).

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.

It was discovered that the wordwrap function did not correctly check lengths. Remote attackers could exploit this to cause a crash or monopolize CPU resources, resulting in a denial of service.
(CVE-2007-3998)

Integer overflows were discovered in the strspn and strcspn functions.
Attackers could exploit this to read arbitrary areas of memory, possibly gaining access to sensitive information. (CVE-2007-4657)

Stanislav Malyshev discovered that money_format function did not correctly handle certain tokens. If a PHP application were tricked into processing a bad format string, a remote attacker could execute arbitrary code with application privileges. (CVE-2007-4658)

It was discovered that the php_openssl_make_REQ function did not correctly check buffer lengths. A remote attacker could send a specially crafted message and execute arbitrary code with application privileges. (CVE-2007-4662)

It was discovered that certain characters in session cookies were not handled correctly. A remote attacker could injection values which could lead to altered application behavior, potentially gaining additional privileges. (CVE-2007-3799)

Gerhard Wagner discovered that the chunk_split function did not correctly handle long strings. A remote attacker could exploit this to execute arbitrary code with application privileges. (CVE-2007-2872, CVE-2007-4660, CVE-2007-4661)

Stefan Esser discovered that deeply nested arrays could be made to fill stack space. A remote attacker could exploit this to cause a crash or monopolize CPU resources, resulting in a denial of service.
(CVE-2007-1285, CVE-2007-4670)

Rasmus Lerdorf discovered that the htmlentities and htmlspecialchars functions did not correctly stop when handling partial multibyte sequences. A remote attacker could exploit this to read certain areas of memory, possibly gaining access to sensitive information.
(CVE-2007-5898)

It was discovered that the output_add_rewrite_var fucntion would sometimes leak session id information to forms targeting remote URLs.
Malicious remote sites could use this information to gain access to a PHP application user's login credentials. (CVE-2007-5899).

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.

The following issues have been fixed in PHP, which were spotted by the MOPB project or fixed in PHP 5.2.3 release :

  - missing open_basedir and safe_mode restriction     (CVE-2007-3007)

  - chunk_split() integer overflow (CVE-2007-2872)

  - DoS condition in libgd's image processing     (CVE-2007-2756)

  - possible super-global overwrite inside     import_request_variables() (CVE-2007-1396)

  - buffer overflow inside user_filter_factory_create()     (CVE-2007-2511)

  - remotely trigger-able buffer overflow inside bundled     libxmlrpc (CVE-2007-1864)

  - CRLF injection inside ftp_putcmd() (CVE-2007-2509)

  - remotely trigger-able buffer overflow inside     make_http_soap_request() (CVE-2007-2510)

  - MOPB-41-2007:PHP 5 sqlite_udf_decode_binary() Buffer     Overflow Vulnerability (CVE-2007-0906)

  - MOPB-03-2007: deep recursion DoS (CVE-2007-1285)

The remote host is affected by the vulnerability described in GLSA-200705-19 (PHP: Multiple vulnerabilities)

    Several vulnerabilities were found in PHP, most of them during the     Month Of PHP Bugs (MOPB) by Stefan Esser. The most severe of these     vulnerabilities are integer overflows in wbmp.c from the GD library     (CVE-2007-1001) and in the substr_compare() PHP 5 function     (CVE-2007-1375). Ilia Alshanetsky also reported a buffer overflow in     the make_http_soap_request() and in the user_filter_factory_create()     functions (CVE-2007-2510, CVE-2007-2511), and Stanislav Malyshev     discovered another buffer overflow in the bundled XMLRPC library     (CVE-2007-1864). Additionally, the session_regenerate_id() and the     array_user_key_compare() functions contain a double-free vulnerability     (CVE-2007-1484, CVE-2007-1521). Finally, there exist implementation     errors in the Zend engine, in the mb_parse_str(), the unserialize() and     the mail() functions and other elements.
  Impact :

    Remote attackers might be able to exploit these issues in PHP     applications making use of the affected functions, potentially     resulting in the execution of arbitrary code, Denial of Service,     execution of scripted contents in the context of the affected site,     security bypass or information leak.
  Workaround :

    There is no known workaround at this time.

Updated PHP packages that fix several security issues are now available for Red Hat Enterprise Linux 5.

This update has been rated as having important security impact by the Red Hat Security Response Team.

PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Web server.

A number of buffer overflow flaws were found in the PHP session extension; the str_replace() function; and the imap_mail_compose() function. If very long strings were passed to the str_replace() function, an integer overflow could occur in memory allocation. If a script used the imap_mail_compose() function to create a new MIME message based on an input body from an untrusted source, it could result in a heap overflow. An attacker with access to a PHP application affected by any these issues could trigger the flaws and possibly execute arbitrary code as the 'apache' user. (CVE-2007-0906)

When unserializing untrusted data on 64-bit platforms, the zend_hash_init() function could be forced into an infinite loop, consuming CPU resources for a limited time, until the script timeout alarm aborted execution of the script. (CVE-2007-0988)

If the wddx extension was used to import WDDX data from an untrusted source, certain WDDX input packets could expose a random portion of heap memory. (CVE-2007-0908)

If the odbc_result_all() function was used to display data from a database, and the database table contents were under an attacker's control, a format string vulnerability was possible which could allow arbitrary code execution. (CVE-2007-0909)

A one byte memory read always occurs before the beginning of a buffer.
This could be triggered, for example, by any use of the header() function in a script. However it is unlikely that this would have any effect. (CVE-2007-0907)

Several flaws in PHP could allow attackers to 'clobber' certain super-global variables via unspecified vectors. (CVE-2007-0910)

An input validation bug allowed a remote attacker to trigger a denial of service attack by submitting an input variable with a deeply-nested-array. (CVE-2007-1285)

Users of PHP should upgrade to these updated packages which contain backported patches to correct these issues.

The remote host is running a version of PHP lower than 4.4.7 or 5.2.2.  This version is vulnerable to a number of remote issues.  At least one of these issues is related to a buffer overflow attack.  An attacker exploiting these flaws would be able to impact confidentiality, integrity, and availability. 

According to its banner, the version of PHP installed on the remote host is older than 4.4.7 / 5.2.2.  Such versions may be affected by several issues, including buffer overflows in the GD library.

A heap-based buffer overflow vulnerability was found in PHP's gd extension. A script that could be forced to process WBMP images from an untrusted source could result in arbitrary code execution (CVE-2007-1001).

A DoS flaw was found in how PHP processed a deeply nested array. A remote attacker could cause the PHP intrerpreter to creash by submitting an input variable with a deeply nested array (CVE-2007-1285).

A vulnerability in the way the mbstring extension set global variables was discovered where a script using the mb_parse_str() function to set global variables could be forced to to enable the register_globals configuration option, possibly resulting in global variable injection (CVE-2007-1583).

A vulnerability in how PHP's mail() function processed header data was discovered. If a script sent mail using a subject header containing a string from an untrusted source, a remote attacker could send bulk email to unintended recipients (CVE-2007-1718).

A buffer overflow in the sqlite_decode_function() in the bundled sqlite library could allow context-dependent attackers to execute arbitrary code (CVE-2007-1887).

Updated packages have been patched to correct these issues. Also note that the default use of the Hardened PHP patch helped to protect against some of these issues prior to patching.

Updated PHP packages that fix several security issues are now available for Red Hat Enterprise Linux 3 and 4.

This update has been rated as having important security impact by the Red Hat Security Response Team.

PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Web server.

A denial of service flaw was found in the way PHP processed a deeply nested array. A remote attacker could cause the PHP interpreter to crash by submitting an input variable with a deeply nested array.
(CVE-2007-1285)

A flaw was found in the way PHP's unserialize() function processed data. If a remote attacker was able to pass arbitrary data to PHP's unserialize() function, they could possibly execute arbitrary code as the apache user. (CVE-2007-1286)

A flaw was found in the way the mbstring extension set global variables. A script which used the mb_parse_str() function to set global variables could be forced to enable the register_globals configuration option, possibly resulting in global variable injection.
(CVE-2007-1583)

A double free flaw was found in PHP's session_decode() function. If a remote attacker was able to pass arbitrary data to PHP's session_decode() function, they could possibly execute arbitrary code as the apache user. (CVE-2007-1711)

A flaw was discovered in the way PHP's mail() function processed header data. If a script sent mail using a Subject header containing a string from an untrusted source, a remote attacker could send bulk e-mail to unintended recipients. (CVE-2007-1718)

A heap based buffer overflow flaw was discovered in PHP's gd extension. A script that could be forced to process WBMP images from an untrusted source could result in arbitrary code execution.
(CVE-2007-1001)

A buffer over-read flaw was discovered in PHP's gd extension. A script that could be forced to write arbitrary string using a JIS font from an untrusted source could cause the PHP interpreter to crash.
(CVE-2007-0455)

Users of PHP should upgrade to these updated packages which contain backported patches to correct these issues.

Updated PHP packages that fix several security issues are now available for Red Hat Enterprise Linux 2.1.

This update has been rated as having important security impact by the Red Hat Security Response Team.

PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Web server.

A denial of service flaw was found in the way PHP processed a deeply nested array. A remote attacker could cause the PHP interpreter to crash by submitting an input variable with a deeply nested array.
(CVE-2007-1285)

A flaw was found in the way PHP's unserialize() function processes data. If a remote attacker is able to pass arbitrary data to PHP's unserialize() function, it may be possible for them to execute arbitrary code as the apache user. (CVE-2007-1286)

A double free flaw was found in PHP's session_decode() function. If a remote attacker is able to pass arbitrary data to PHP's session_decode() function, it may be possible for them to execute arbitrary code as the apache user. (CVE-2007-1711)

Users of PHP should upgrade to these updated packages which contain backported patches to correct these issues.

ID	Name	Product	Family	Severity
78215	F5 Networks BIG-IP : Multiple PHP vulnerabilities (SOL7859)	Nessus	F5 Networks Local Security Checks	high
67471	Oracle Linux 3 / 4 : php (ELSA-2007-0155)	Nessus	Oracle Linux Local Security Checks	high
37164	Mandrake Linux Security Advisory : php (MDKSA-2007:090)	Nessus	Mandriva Local Security Checks	high
31101	Slackware 10.2 / 11.0 : php (SSA:2008-045-03)	Nessus	Slackware Local Security Checks	high
29552	SuSE 10 Security Update : PHP5 (ZYPP Patch Number 3754)	Nessus	SuSE Local Security Checks	high
29213	Ubuntu 7.10 : php5 regression (USN-549-2)	Nessus	Ubuntu Local Security Checks	high
28372	Ubuntu 6.06 LTS / 6.10 / 7.04 / 7.10 : php5 vulnerabilities (USN-549-1)	Nessus	Ubuntu Local Security Checks	high
27392	openSUSE 10 Security Update : php5 (php5-3753)	Nessus	SuSE Local Security Checks	high
27391	openSUSE 10 Security Update : php5 (php5-3745)	Nessus	SuSE Local Security Checks	high
25340	GLSA-200705-19 : PHP: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high
25317	RHEL 5 : php (RHSA-2007:0082)	Nessus	Red Hat Local Security Checks	critical
3982	PHP 4.x < 4.4.7 / 5.x < 5.2.2 Multiple Vulnerabilities	Nessus Network Monitor	Web Servers	high
25159	PHP < 4.4.7 / 5.2.2 Multiple Vulnerabilities	Nessus	CGI abuses	high
25113	Mandrake Linux Security Advisory : php (MDKSA-2007:089)	Nessus	Mandriva Local Security Checks	high
25068	RHEL 3 / 4 : php (RHSA-2007:0155)	Nessus	Red Hat Local Security Checks	high
25067	RHEL 2.1 : php (RHSA-2007:0154)	Nessus	Red Hat Local Security Checks	medium
25043	CentOS 3 / 4 : php (CESA-2007:0155)	Nessus	CentOS Local Security Checks	high

Detections

Analytics

CVE-2007-1285

high

Tenable Plugins

high

high

high

high

high

high

high

high

high

high

critical

high

high

high

high

medium

high