The mb_parse_str function in PHP 4.0.0 through 4.4.6 and 5.0.0 through 5.2.1 sets the internal register_globals flag and does not disable it in certain cases when a script terminates, which allows remote attackers to invoke available PHP scripts with register_globals functionality that is not detectable by these scripts, as demonstrated by forcing a memory_limit violation.

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.

According to its banner, the version of PHP 5.x installed on the remote host is older than 5.2.2.  It is, therefore, affected by multiple vulnerabilities:

  - 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 vulnerability in the way the mbstring extension     setglobal 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 context-dependent attacker could read portions of     heap memory by executing certain scripts with a     serialized data input string beginning with 'S:', which     did not properly track the number of input bytes being     processed. (CVE-2007-1649)

  - A vulnerability in how PHP's mail() function processed     email messages, truncating potentially important     information after the first ASCIIZ (\0) byte.
    (CVE-2007-1717)

  - 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 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.

This Update fixes numerous vulnerabilities in PHP. Most of them were made public during the 'Month of PHP Bugs'. The vulnerabilities potentially lead to crashes, information leaks or even execution of malicious code.

CVE-2007-1380 / CVE-2007-0988 / CVE-2007-1375 / CVE-2007-1521 / CVE-2007-1376 / CVE-2007-1583 / CVE-2007-1461 / CVE-2007-1484 / CVE-2007-1700 / CVE-2007-1717 / CVE-2007-1718 / CVE-2007-1001 / CVE-2007-1824

Stefan Esser discovered multiple vulnerabilities in the 'Month of PHP bugs'.

The substr_compare() function did not sufficiently verify its length argument. This might be exploited to read otherwise unaccessible memory, which might lead to information disclosure. (CVE-2007-1375)

The shared memory (shmop) functions did not verify resource types, thus they could be called with a wrong resource type that might contain user-supplied data. This could be exploited to read and write arbitrary memory addresses of the PHP interpreter. This issue does not affect Ubuntu 7.04. (CVE-2007-1376)

The php_binary handler of the session extension was missing a boundary check. When unserializing overly long variable names this could be exploited to read up to 126 bytes of memory, which might lead to information disclosure. (CVE-2007-1380)

The internal array_user_key_compare() function, as used for example by the PHP function uksort(), incorrectly handled memory unreferencing of its arguments. This could have been exploited to execute arbitrary code with the privileges of the PHP interpreter, and thus circumventing any disable_functions, open_basedir, or safe_mode restrictions. (CVE-2007-1484)

The session_regenerate_id() function did not properly clean up the former session identifier variable. This could be exploited to crash the PHP interpreter, possibly also remotely. (CVE-2007-1521)

Under certain conditions the mb_parse_str() could cause the register_globals configuration option to become permanently enabled.
This opened an attack vector for a large and common class of vulnerabilities. (CVE-2007-1583)

The session extension did not set the correct reference count value for the session variables. By unsetting _SESSION and HTTP_SESSION_VARS (or tricking a PHP script into doing that) this could be exploited to execute arbitrary code with the privileges of the PHP interpreter.
This issue does not affect Ubuntu 7.04. (CVE-2007-1700)

The mail() function did not correctly escape control characters in multiline email headers. This could be remotely exploited to inject arbitrary email headers. (CVE-2007-1718)

The php_stream_filter_create() function had an off-by-one buffer overflow in the handling of wildcards. This could be exploited to remotely crash the PHP interpreter. This issue does not affect Ubuntu 7.04. (CVE-2007-1824)

When calling the sqlite_udf_decode_binary() with special arguments, a buffer overflow happened. Depending on the application this could be locally or remotely exploited to execute arbitrary code with the privileges of the PHP interpreter. (CVE-2007-1887 CVE-2007-1888)

The FILTER_VALIDATE_EMAIL filter extension used a wrong regular expression that allowed injecting a newline character at the end of the email string. This could be exploited to inject arbitrary email headers. This issue only affects Ubuntu 7.04. (CVE-2007-1900).

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.

This Update fixes numerous vulnerabilities in PHP. Most of them were made public during the 'Month of PHP Bugs'. The vulnerabilities potentially lead to crashes, information leaks or even execution of malicious code.

CVE-2007-1380, CVE-2007-0988, CVE-2007-1375, CVE-2007-1454 CVE-2007-1453, CVE-2007-1521, CVE-2007-1522, CVE-2007-1376 CVE-2007-1583, CVE-2007-1460, CVE-2007-1461, CVE-2007-1484 CVE-2007-1700, CVE-2007-1717, CVE-2007-1718, CVE-2007-1001 CVE-2007-1824, CVE-2007-1889, CVE-2007-1900

The remote host is running a version of Mac OS X 10.4 or 10.3 which does not have the security update 2007-007 applied. 

This update contains several security fixes for the following programs :

 - bzip2
 - CFNetwork
 - CoreAudio
 - cscope
 - gnuzip
 - iChat
 - Kerberos
 - mDNSResponder
 - PDFKit
 - PHP
 - Quartz Composer
 - Samba
 - SquirrelMail
 - Tomcat
 - WebCore
 - WebKit

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 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 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)

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)

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.

Several remote vulnerabilities have been discovered in PHP, a server-side, HTML-embedded scripting language, which may lead to the execution of arbitrary code. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2007-1286     Stefan Esser discovered an overflow in the object     reference handling code of the unserialize() function,     which allows the execution of arbitrary code if     malformed input is passed from an application.

  - CVE-2007-1375     Stefan Esser discovered that an integer overflow in the     substr_compare() function allows information disclosure     of heap memory.

  - CVE-2007-1376     Stefan Esser discovered that insufficient validation of     shared memory functions allows the disclosure of heap     memory.

  - CVE-2007-1380     Stefan Esser discovered that the session handler     performs insufficient validation of variable name length     values, which allows information disclosure through a     heap information leak.

  - CVE-2007-1453     Stefan Esser discovered that the filtering framework     performs insufficient input validation, which allows the     execution of arbitrary code through a buffer underflow.

  - CVE-2007-1454     Stefan Esser discovered that the filtering framework can     be bypassed with a special whitespace character.

  - CVE-2007-1521     Stefan Esser discovered a double free vulnerability in     the session_regenerate_id() function, which allows the     execution of arbitrary code.

  - CVE-2007-1583     Stefan Esser discovered that a programming error in the     mb_parse_str() function allows the activation of     'register_globals'.

  - CVE-2007-1700     Stefan Esser discovered that the session extension     incorrectly maintains the reference count of session     variables, which allows the execution of arbitrary code.

  - CVE-2007-1711     Stefan Esser discovered a double free vulnerability in     the session management code, which allows the execution     of arbitrary code.

  - CVE-2007-1718     Stefan Esser discovered that the mail() function     performs insufficient validation of folded mail headers,     which allows mail header injection.

  - CVE-2007-1777     Stefan Esser discovered that the extension to handle ZIP     archives performs insufficient length checks, which     allows the execution of arbitrary code.

  - CVE-2007-1824     Stefan Esser discovered an off-by-one error in the     filtering framework, which allows the execution of     arbitrary code.

  - CVE-2007-1887     Stefan Esser discovered that a buffer overflow in the     sqlite extension allows the execution of arbitrary code.

  - CVE-2007-1889     Stefan Esser discovered that the PHP memory manager     performs an incorrect type cast, which allows the     execution of arbitrary code through buffer overflows.

  - CVE-2007-1900     Stefan Esser discovered that incorrect validation in the     email filter extension allows the injection of mail     headers.

The oldstable distribution (sarge) doesn't include php5.

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.

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
17797	PHP 5.x < 5.2.2 Multiple vulnerabilities	Nessus	CGI abuses	high
37164	Mandrake Linux Security Advisory : php (MDKSA-2007:090)	Nessus	Mandriva Local Security Checks	high
29378	SuSE 10 Security Update : PHP5 (ZYPP Patch Number 3290)	Nessus	SuSE Local Security Checks	high
28053	Ubuntu 6.06 LTS / 6.10 / 7.04 : php5 vulnerabilities (USN-455-1)	Nessus	Ubuntu Local Security Checks	high
27150	openSUSE 10 Security Update : apache2-mod_php5 (apache2-mod_php5-3289)	Nessus	SuSE Local Security Checks	high
25830	Mac OS X Multiple Vulnerabilities (Security Update 2007-007)	Nessus	MacOS X Local Security Checks	critical
25340	GLSA-200705-19 : PHP: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	high
25325	RHEL 5 : php (RHSA-2007:0153)	Nessus	Red Hat Local Security Checks	high
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
25100	Debian DSA-1283-1 : php5 - several vulnerabilities	Nessus	Debian Local Security Checks	high
25095	CentOS 5 : php (CESA-2007:0153)	Nessus	CentOS Local Security Checks	high
25068	RHEL 3 / 4 : php (RHSA-2007:0155)	Nessus	Red Hat Local Security Checks	high
25043	CentOS 3 / 4 : php (CESA-2007:0155)	Nessus	CentOS Local Security Checks	high

Detections

Analytics

CVE-2007-1583

critical

Tenable Plugins

high

high

high

high

high

high

high

critical

high

high

high

high

high

high

high

high

high