Integer overflow in the exif_process_IFD_TAG function in exif.c in the exif extension in PHP 5.4.0beta2 on 32-bit platforms allows remote attackers to read the contents of arbitrary memory locations or cause a denial of service via a crafted offset_val value in an EXIF header in a JPEG file, a different vulnerability than CVE-2011-0708.

PHP has been cited with the following multiple vulnerabilities, which may be locally exploitable on some F5 products :

CVE-2006-7243 PHP before 5.3.4 accepts the \0 character in a pathname, which might allow context-dependent attackers to bypass intended access restrictions by placing a safe file extension after this character, as demonstrated by .php\0.jpg at the end of the argument to the file_exists function.

CVE-2007-3799 The session_start function in ext/session in PHP 4.x up to 4.4.7 and 5.x up to 5.2.3 allows remote attackers to insert arbitrary attributes into the session cookie via special characters in a cookie that is obtained from (1) PATH_INFO, (2) the session_id function, and (3) the session_start function, which are not encoded or filtered when the new session cookie is generated, a related issue to CVE-2006-0207.

CVE-2010-3710 Stack consumption vulnerability in the filter_var function in PHP 5.2.x through 5.2.14 and 5.3.x through 5.3.3, when FILTER_VALIDATE_EMAIL mode is used, allows remote attackers to cause a denial of service (memory consumption and application crash) via a long e-mail address string.

CVE-2010-3870 The utf8_decode function in PHP before 5.3.4 does not properly handle non-shortest form UTF-8 encoding and ill-formed subsequences in UTF-8 data, which makes it easier for remote attackers to bypass cross-site scripting (XSS) and SQL injection protection mechanisms via a crafted string.

CVE-2010-4697 Use-after-free vulnerability in the Zend engine in PHP before 5.2.15 and 5.3.x before 5.3.4 might allow context-dependent attackers to cause a denial of service (heap memory corruption) or have unspecified other impact via vectors related to use of __set,
__get, __isset, and __unset methods on objects accessed by a reference.

CVE-2011-1470 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-2011-3182 PHP before 5.3.7 does not properly check the return values of the malloc, calloc, and realloc library functions, which allows context-dependent attackers to cause a denial of service (NULL pointer dereference and application crash) or trigger a buffer overflow by leveraging the ability to provide an arbitrary value for a function argument, related to (1) ext/curl/interface.c, (2) ext/date/lib/parse_date.c, (3) ext/date/lib/parse_iso_intervals.c, (4) ext/date/lib/parse_tz.c, (5) ext/date/lib/timelib.c, (6) ext/pdo_odbc/pdo_odbc.c, (7) ext/reflection/php_reflection.c, (8) ext/soap/php_sdl.c, (9) ext/xmlrpc/libxmlrpc/base64.c, (10) TSRM/tsrm_win32.c, and (11) the strtotime function.

CVE-2011-3267 PHP before 5.3.7 does not properly implement the error_log function, which allows context-dependent attackers to cause a denial of service (application crash) via unspecified vectors.

CVE-2011-3268 Buffer overflow in the crypt function in PHP before 5.3.7 allows context-dependent attackers to have an unspecified impact via a long salt argument, a different vulnerability than CVE-2011-2483.

CVE-2011-4566 Integer overflow in the exif_process_IFD_TAG function in exif.c in the exif extension in PHP 5.4.0beta2 on 32-bit platforms allows remote attackers to read the contents of arbitrary memory locations or cause a denial of service via a crafted offset_val value in an EXIF header in a JPEG file, a different vulnerability than CVE-2011-0708.

CVE-2012-0830 The php_register_variable_ex function in php_variables.c in PHP 5.3.9 allows remote attackers to execute arbitrary code via a request containing a large number of variables, related to improper handling of array variables. NOTE: this vulnerability exists because of an incorrect fix for CVE-2011-4885.

It was found that the hashing routine used by PHP arrays was susceptible to predictable hash collisions. If an HTTP POST request to a PHP application contained many parameters whose names map to the same hash value, a large amount of CPU time would be consumed. This flaw has been mitigated by adding a new configuration directive, max_input_vars, that limits the maximum number of parameters processed per request. By default, max_input_vars is set to 1000.
(CVE-2011-4885)

An integer overflow flaw was found in the PHP exif extension. On 32-bit systems, a specially crafted image file could cause the PHP interpreter to crash or disclose portions of its memory when a PHP script tries to extract Exchangeable image file format (Exif) metadata from the image file. (CVE-2011-4566)

From Red Hat Security Advisory 2012:0071 :

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

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

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

It was found that the hashing routine used by PHP arrays was susceptible to predictable hash collisions. If an HTTP POST request to a PHP application contained many parameters whose names map to the same hash value, a large amount of CPU time would be consumed. This flaw has been mitigated by adding a new configuration directive, max_input_vars, that limits the maximum number of parameters processed per request. By default, max_input_vars is set to 1000.
(CVE-2011-4885)

An integer overflow flaw was found in the PHP exif extension. On 32-bit systems, a specially crafted image file could cause the PHP interpreter to crash or disclose portions of its memory when a PHP script tries to extract Exchangeable image file format (Exif) metadata from the image file. (CVE-2011-4566)

An insufficient input validation flaw, leading to a buffer over-read, was found in the PHP exif extension. A specially crafted image file could cause the PHP interpreter to crash when a PHP script tries to extract Exchangeable image file format (Exif) metadata from the image file. (CVE-2011-0708)

An integer overflow flaw was found in the PHP calendar extension. A remote attacker able to make a PHP script call SdnToJulian() with a large value could cause the PHP interpreter to crash. (CVE-2011-1466)

An off-by-one flaw was found in PHP. If an attacker uploaded a file with a specially crafted file name it could cause a PHP script to attempt to write a file to the root (/) directory. By default, PHP runs as the 'apache' user, preventing it from writing to the root directory. (CVE-2011-2202)

Red Hat would like to thank oCERT for reporting CVE-2011-4885. oCERT acknowledges Julian Walde and Alexander Klink as the original reporters of CVE-2011-4885.

All php users should upgrade to these updated packages, which contain backported patches to resolve these issues. After installing the updated packages, the httpd daemon must be restarted for the update to take effect.

From Red Hat Security Advisory 2012:0033 :

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

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

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

It was found that the hashing routine used by PHP arrays was susceptible to predictable hash collisions. If an HTTP POST request to a PHP application contained many parameters whose names map to the same hash value, a large amount of CPU time would be consumed. This flaw has been mitigated by adding a new configuration directive, max_input_vars, that limits the maximum number of parameters processed per request. By default, max_input_vars is set to 1000.
(CVE-2011-4885)

A use-after-free flaw was found in the PHP substr_replace() function.
If a PHP script used the same variable as multiple function arguments, a remote attacker could possibly use this to crash the PHP interpreter or, possibly, execute arbitrary code. (CVE-2011-1148)

An integer overflow flaw was found in the PHP exif extension. On 32-bit systems, a specially crafted image file could cause the PHP interpreter to crash or disclose portions of its memory when a PHP script tries to extract Exchangeable image file format (Exif) metadata from the image file. (CVE-2011-4566)

An insufficient input validation flaw, leading to a buffer over-read, was found in the PHP exif extension. A specially crafted image file could cause the PHP interpreter to crash when a PHP script tries to extract Exchangeable image file format (Exif) metadata from the image file. (CVE-2011-0708)

An integer overflow flaw was found in the PHP calendar extension. A remote attacker able to make a PHP script call SdnToJulian() with a large value could cause the PHP interpreter to crash. (CVE-2011-1466)

A bug in the PHP Streams component caused the PHP interpreter to crash if an FTP wrapper connection was made through an HTTP proxy. A remote attacker could possibly trigger this issue if a PHP script accepted an untrusted URL to connect to. (CVE-2011-1469)

An off-by-one flaw was found in PHP. If an attacker uploaded a file with a specially crafted file name it could cause a PHP script to attempt to write a file to the root (/) directory. By default, PHP runs as the 'apache' user, preventing it from writing to the root directory. (CVE-2011-2202)

Red Hat would like to thank oCERT for reporting CVE-2011-4885. oCERT acknowledges Julian Walde and Alexander Klink as the original reporters of CVE-2011-4885.

All php users should upgrade to these updated packages, which contain backported patches to resolve these issues. After installing the updated packages, the httpd daemon must be restarted for the update to take effect.

From Red Hat Security Advisory 2012:0019 :

Updated php53 and php packages that fix two security issues are now available for Red Hat Enterprise Linux 5 and 6 respectively.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

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

It was found that the hashing routine used by PHP arrays was susceptible to predictable hash collisions. If an HTTP POST request to a PHP application contained many parameters whose names map to the same hash value, a large amount of CPU time would be consumed. This flaw has been mitigated by adding a new configuration directive, max_input_vars, that limits the maximum number of parameters processed per request. By default, max_input_vars is set to 1000.
(CVE-2011-4885)

An integer overflow flaw was found in the PHP exif extension. On 32-bit systems, a specially crafted image file could cause the PHP interpreter to crash or disclose portions of its memory when a PHP script tries to extract Exchangeable image file format (Exif) metadata from the image file. (CVE-2011-4566)

Red Hat would like to thank oCERT for reporting CVE-2011-4885. oCERT acknowledges Julian Walde and Alexander Klink as the original reporters of CVE-2011-4885.

All php53 and php users should upgrade to these updated packages, which contain backported patches to resolve these issues. After installing the updated packages, the httpd daemon must be restarted for the update to take effect.

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

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

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

It was found that the hashing routine used by PHP arrays was susceptible to predictable hash collisions. If an HTTP POST request to a PHP application contained many parameters whose names map to the same hash value, a large amount of CPU time would be consumed. This flaw has been mitigated by adding a new configuration directive, max_input_vars, that limits the maximum number of parameters processed per request. By default, max_input_vars is set to 1000.
(CVE-2011-4885)

An integer overflow flaw was found in the PHP exif extension. On 32-bit systems, a specially crafted image file could cause the PHP interpreter to crash or disclose portions of its memory when a PHP script tries to extract Exchangeable image file format (Exif) metadata from the image file. (CVE-2011-4566)

An insufficient input validation flaw, leading to a buffer over-read, was found in the PHP exif extension. A specially crafted image file could cause the PHP interpreter to crash when a PHP script tries to extract Exchangeable image file format (Exif) metadata from the image file. (CVE-2011-0708)

An integer overflow flaw was found in the PHP calendar extension. A remote attacker able to make a PHP script call SdnToJulian() with a large value could cause the PHP interpreter to crash. (CVE-2011-1466)

An off-by-one flaw was found in PHP. If an attacker uploaded a file with a specially crafted file name it could cause a PHP script to attempt to write a file to the root (/) directory. By default, PHP runs as the 'apache' user, preventing it from writing to the root directory. (CVE-2011-2202)

Red Hat would like to thank oCERT for reporting CVE-2011-4885. oCERT acknowledges Julian Walde and Alexander Klink as the original reporters of CVE-2011-4885.

All php users should upgrade to these updated packages, which contain backported patches to resolve these issues. After installing the updated packages, the httpd daemon must be restarted for the update to take effect.

The remote host is affected by the vulnerability described in GLSA-201209-03 (PHP: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in PHP. Please review the       CVE identifiers referenced below for details.
  Impact :

    A remote attacker could execute arbitrary code with the privileges of       the process, cause a Denial of Service condition, obtain sensitive       information, create arbitrary files, conduct directory traversal attacks,       bypass protection mechanisms, or perform further attacks with unspecified       impact.
  Workaround :

    There is no known workaround at this time.

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

It was found that the hashing routine used by PHP arrays was susceptible to predictable hash collisions. If an HTTP POST request to a PHP application contained many parameters whose names map to the same hash value, a large amount of CPU time would be consumed. This flaw has been mitigated by adding a new configuration directive, max_input_vars, that limits the maximum number of parameters processed per request. By default, max_input_vars is set to 1000.
(CVE-2011-4885)

An integer overflow flaw was found in the PHP exif extension. On 32-bit systems, a specially crafted image file could cause the PHP interpreter to crash or disclose portions of its memory when a PHP script tries to extract Exchangeable image file format (Exif) metadata from the image file. (CVE-2011-4566)

An insufficient input validation flaw, leading to a buffer over-read, was found in the PHP exif extension. A specially crafted image file could cause the PHP interpreter to crash when a PHP script tries to extract Exchangeable image file format (Exif) metadata from the image file. (CVE-2011-0708)

An integer overflow flaw was found in the PHP calendar extension. A remote attacker able to make a PHP script call SdnToJulian() with a large value could cause the PHP interpreter to crash. (CVE-2011-1466)

An off-by-one flaw was found in PHP. If an attacker uploaded a file with a specially crafted file name it could cause a PHP script to attempt to write a file to the root (/) directory. By default, PHP runs as the 'apache' user, preventing it from writing to the root directory. (CVE-2011-2202)

All php users should upgrade to these updated packages, which contain backported patches to resolve these issues. After installing the updated packages, the httpd daemon must be restarted for the update to take effect.

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

It was found that the hashing routine used by PHP arrays was susceptible to predictable hash collisions. If an HTTP POST request to a PHP application contained many parameters whose names map to the same hash value, a large amount of CPU time would be consumed. This flaw has been mitigated by adding a new configuration directive, max_input_vars, that limits the maximum number of parameters processed per request. By default, max_input_vars is set to 1000.
(CVE-2011-4885)

A use-after-free flaw was found in the PHP substr_replace() function.
If a PHP script used the same variable as multiple function arguments, a remote attacker could possibly use this to crash the PHP interpreter or, possibly, execute arbitrary code. (CVE-2011-1148)

An integer overflow flaw was found in the PHP exif extension. On 32-bit systems, a specially crafted image file could cause the PHP interpreter to crash or disclose portions of its memory when a PHP script tries to extract Exchangeable image file format (Exif) metadata from the image file. (CVE-2011-4566)

An insufficient input validation flaw, leading to a buffer over-read, was found in the PHP exif extension. A specially crafted image file could cause the PHP interpreter to crash when a PHP script tries to extract Exchangeable image file format (Exif) metadata from the image file. (CVE-2011-0708)

An integer overflow flaw was found in the PHP calendar extension. A remote attacker able to make a PHP script call SdnToJulian() with a large value could cause the PHP interpreter to crash. (CVE-2011-1466)

A bug in the PHP Streams component caused the PHP interpreter to crash if an FTP wrapper connection was made through an HTTP proxy. A remote attacker could possibly trigger this issue if a PHP script accepted an untrusted URL to connect to. (CVE-2011-1469)

An off-by-one flaw was found in PHP. If an attacker uploaded a file with a specially crafted file name it could cause a PHP script to attempt to write a file to the root (/) directory. By default, PHP runs as the 'apache' user, preventing it from writing to the root directory. (CVE-2011-2202)

All php users should upgrade to these updated packages, which contain backported patches to resolve these issues. After installing the updated packages, the httpd daemon must be restarted for the update to take effect.

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

It was found that the hashing routine used by PHP arrays was susceptible to predictable hash collisions. If an HTTP POST request to a PHP application contained many parameters whose names map to the same hash value, a large amount of CPU time would be consumed. This flaw has been mitigated by adding a new configuration directive, max_input_vars, that limits the maximum number of parameters processed per request. By default, max_input_vars is set to 1000.
(CVE-2011-4885)

An integer overflow flaw was found in the PHP exif extension. On 32-bit systems, a specially crafted image file could cause the PHP interpreter to crash or disclose portions of its memory when a PHP script tries to extract Exchangeable image file format (Exif) metadata from the image file. (CVE-2011-4566)

All php53 and php users should upgrade to these updated packages, which contain backported patches to resolve these issues. After installing the updated packages, the httpd daemon must be restarted for the update to take effect.

The remote host is running a version of Mac OS X 10.7 that is older than version 10.7.4.  The newer version contains numerous security-related fixes for the following components :

  - Login Windows
  - Bluetooth
  - curl
  - HFS
  - Kernel
  - libarchive
  - libsecurity
  - libxml
  - LoginUIFramework
  - PHP
  - Quartz Composer
  - QuickTime
  - Ruby
  - Security Framework
  - Time Machine
  - X11

The remote host is running a version of Mac OS X 10.7.x that is prior to 10.7.4. The newer version contains numerous security-related fixes for the following components :

  - Login Window
  - Bluetooth
  - curl
  - HFS
  - Kernel
  - libarchive
  - libsecurity
  - libxml
  - LoginUIFramework
  - PHP
  - Quartz Composer
  - QuickTime
  - Ruby
  - Security Framework
  - Time Machine
  - X11

Note that this update addresses the recent FileVault password vulnerability, in which user passwords are stored in plaintext to a system-wide debug log if the legacy version of FileVault is used to encrypt user directories after a system upgrade to Lion. Since the patch only limits further exposure, though, we recommend that all users on the system change their passwords if user folders were encrypted using the legacy version of FileVault prior to and after an upgrade to OS X 10.7.

This update of php5 fixes multiple security flaws :

  - A php5 upload filename injection was fixed.
    (CVE-2011-2202)

  - A integer overflow in the EXIF extension was fixed that     could be used by attackers to crash the interpreter or     potentially read memory. (CVE-2011-4566)

  - Multiple NULL pointer dereferences were fixed that could     lead to crashes. (CVE-2011-3182)

  - An integer overflow in the PHP calendar extension was     fixed that could have led to crashes. (CVE-2011-1466)

  - A symlink vulnerability in the PEAR installer could be     exploited by local attackers to inject code.
    (CVE-2011-1072)

  - missing checks of return values could allow remote     attackers to cause a denial of service (NULL pointer     dereference). (CVE-2011-4153)

  - denial of service via hash collisions. (CVE-2011-4885)

  - specially crafted XSLT stylesheets could allow remote     attackers to create arbitrary files with arbitrary     content. (CVE-2012-0057)

  - remote attackers can cause a denial of service via     specially crafted input to an application that attempts     to perform Tidy::diagnose operations. (CVE-2012-0781)

  - applications that use a PDO driver were prone to denial     of service flaws which could be exploited remotely.
    (CVE-2012-0788)

  - memory leak in the timezone functionality could allow     remote attackers to cause a denial of service (memory     consumption). (CVE-2012-0789)

  - a stack-based buffer overflow in the php5 Suhosin     extension could allow remote attackers to execute     arbitrary code via a long string that is used in a     Set-Cookie HTTP header. (CVE-2012-0807)

  - this fixes an incorrect fix for CVE-2011-4885 which     could allow remote attackers to execute arbitrary code     via a request containing a large number of variables.
    (CVE-2012-0830)

  - temporary changes to the magic_quotes_gpc directive     during the importing of environment variables is not     properly performed which makes it easier for remote     attackers to conduct SQL injections. (CVE-2012-0831)

Also the following bugs have been fixed :

  - allow uploading files bigger than 2GB for 64bit systems     [bnc#709549]

  - amend README.SUSE to discourage using apache module with     apache2-worker [bnc#728671]

Several vulnerabilities have been discovered in PHP, the web scripting language. The Common Vulnerabilities and Exposures project identifies the following issues :

  - CVE-2011-1938     The UNIX socket handling allowed attackers to trigger a     buffer overflow via a long path name.

  - CVE-2011-2483     The crypt_blowfish function did not properly handle     8-bit characters, which made it easier for attackers to     determine a cleartext password by using knowledge of a     password hash.

  - CVE-2011-4566     When used on 32 bit platforms, the exif extension could     be used to trigger an integer overflow in the     exif_process_IFD_TAG function when processing a JPEG     file.

  - CVE-2011-4885     It was possible to trigger hash collisions predictably     when parsing form parameters, which allows remote     attackers to cause a denial of service by sending many     crafted parameters.

  - CVE-2012-0057     When applying a crafted XSLT transform, an attacker     could write files to arbitrary places in the filesystem.

NOTE: the fix for CVE-2011-2483 required changing the behaviour of this function: it is now incompatible with some old (wrongly) generated hashes for passwords containing 8-bit characters. See the package NEWS entry for details. This change has not been applied to the Lenny version of PHP.

The remote Redhat Enterprise Linux 4 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2012:0071 advisory.

  - php: buffer over-read in Exif extension (CVE-2011-0708)

  - php: Crash by converting serial day numbers (SDN) into Julian calendar (CVE-2011-1466)

  - php: file path injection vulnerability in RFC1867 file upload filename (CVE-2011-2202)

  - php: integer overflow in exif_process_IFD_TAG() may lead to DoS or arbitrary memory disclosure     (CVE-2011-4566)

  - php: hash table collisions CPU usage DoS (oCERT-2011-003) (CVE-2011-4885)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

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

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

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

It was found that the hashing routine used by PHP arrays was susceptible to predictable hash collisions. If an HTTP POST request to a PHP application contained many parameters whose names map to the same hash value, a large amount of CPU time would be consumed. This flaw has been mitigated by adding a new configuration directive, max_input_vars, that limits the maximum number of parameters processed per request. By default, max_input_vars is set to 1000.
(CVE-2011-4885)

A use-after-free flaw was found in the PHP substr_replace() function.
If a PHP script used the same variable as multiple function arguments, a remote attacker could possibly use this to crash the PHP interpreter or, possibly, execute arbitrary code. (CVE-2011-1148)

An integer overflow flaw was found in the PHP exif extension. On 32-bit systems, a specially crafted image file could cause the PHP interpreter to crash or disclose portions of its memory when a PHP script tries to extract Exchangeable image file format (Exif) metadata from the image file. (CVE-2011-4566)

An insufficient input validation flaw, leading to a buffer over-read, was found in the PHP exif extension. A specially crafted image file could cause the PHP interpreter to crash when a PHP script tries to extract Exchangeable image file format (Exif) metadata from the image file. (CVE-2011-0708)

An integer overflow flaw was found in the PHP calendar extension. A remote attacker able to make a PHP script call SdnToJulian() with a large value could cause the PHP interpreter to crash. (CVE-2011-1466)

A bug in the PHP Streams component caused the PHP interpreter to crash if an FTP wrapper connection was made through an HTTP proxy. A remote attacker could possibly trigger this issue if a PHP script accepted an untrusted URL to connect to. (CVE-2011-1469)

An off-by-one flaw was found in PHP. If an attacker uploaded a file with a specially crafted file name it could cause a PHP script to attempt to write a file to the root (/) directory. By default, PHP runs as the 'apache' user, preventing it from writing to the root directory. (CVE-2011-2202)

Red Hat would like to thank oCERT for reporting CVE-2011-4885. oCERT acknowledges Julian Walde and Alexander Klink as the original reporters of CVE-2011-4885.

All php users should upgrade to these updated packages, which contain backported patches to resolve these issues. After installing the updated packages, the httpd daemon must be restarted for the update to take effect.

Versions of PHP earlier than 5.3.9 are potentially affected by multiple vulnerabilities :

  - It is possible to create a denial of service condition by sending multiple, specially crafted requests containing parameter values that cause hash collisions when computing the hash values for storage in a hash table. (CVE-2011-4885)

  - An integer overflow exists in the exif_process_IFD_TAG function in exif.c that can allow a remote attacker to read arbitrary memory locations or cause a denial of service condition.  This vulnerability only affects PHP 5.4.0beta2 on 32-bit platforms. (CVE-2011-4566)

  - Calls to libxslt are not restricted via xsltSetSecurityPrefs(), which could allow an attacker to create or overwrite file, resulting in arbitrary code execution. (CVE-2012-0057)

  - An error exists in the function 'tidy_diagnose' that can allow an attacker to cause the application to dereference a null pointer.  This causes the application to crash. (CVE-2012-0781)

  - The 'PDORow' implementation contains an error that can cause application crashes when interacting with the session feature. C(VE-2012-0788)

  - An error exists in the timezone handling such that repeated calls to the function 'strtotime' can allow a denial of service attack via memory consuption. (CVE-2012-0789)

Versions of PHP earlier than 5.3.9 are potentially affected by multiple vulnerabilities :

 - It is possible to create a denial of service condition by sending multiple, specially crafted requests containing parameter values that cause hash collisions when computing the hash values for storage in a hash table. (CVE-2011-4885)
 - An integer overflow exists in the exif_process_IFD_TAG function in exif.c that can allow a remote attacker to read arbitrary memory locations or cause a denial of service condition.  This vulnerability only affects PHP 5.4.0beta2 on 32-bit platforms. (CVE-2011-4566)
 - Calls to libxslt are not restricted via xsltSetSecurityPrefs(), which could allow an attacker to create or overwrite file, resulting in arbitrary code execution. (CVE-2012-0057)
 - An error exists in the function 'tidy_diagnose' that can allow an attacker to cause the application to dereference a null pointer.  This causes the application to crash. (CVE-2012-0781)
 - The 'PDORow' implementation contains an error that can cause application crashes when interacting with the session feature. C(VE-2012-0788)
 - An error exists in the timezone handling such that repeated calls to the function 'strtotime' can allow a denial of service attack via memory consuption. (CVE-2012-0789)

According to its banner, the version of PHP installed on the remote host is older than 5.3.9.  As such, it may be affected by the following security issues :

  - The 'is_a()' function in PHP 5.3.7 and 5.3.8 triggers a     call to '__autoload()'. (CVE-2011-3379)

  - It is possible to create a denial of service condition     by sending multiple, specially crafted requests     containing parameter values that cause hash collisions     when computing the hash values for storage in a hash     table.  (CVE-2011-4885)    
  - An integer overflow exists in the exif_process_IFD_TAG     function in exif.c that can allow a remote attacker to     read arbitrary memory locations or cause a denial of     service condition.  This vulnerability only affects PHP     5.4.0beta2 on 32-bit platforms. (CVE-2011-4566)

  - Calls to libxslt are not restricted via     xsltSetSecurityPrefs(), which could allow an attacker     to create or overwrite files, resulting in arbitrary     code execution. (CVE-2012-0057)

  - An error exists in the function 'tidy_diagnose' that     can allow an attacker to cause the application to     dereference a NULL pointer. This causes the application     to crash. (CVE-2012-0781)

  - The 'PDORow' implementation contains an error that can     cause application crashes when interacting with the     session feature. (CVE-2012-0788)

  - An error exists in the timezone handling such that     repeated calls to the function 'strtotime' can allow     a denial of service attack via memory consumption.
    (CVE-2012-0789)

Updated php53 and php packages that fix two security issues are now available for Red Hat Enterprise Linux 5 and 6 respectively.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

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

It was found that the hashing routine used by PHP arrays was susceptible to predictable hash collisions. If an HTTP POST request to a PHP application contained many parameters whose names map to the same hash value, a large amount of CPU time would be consumed. This flaw has been mitigated by adding a new configuration directive, max_input_vars, that limits the maximum number of parameters processed per request. By default, max_input_vars is set to 1000.
(CVE-2011-4885)

An integer overflow flaw was found in the PHP exif extension. On 32-bit systems, a specially crafted image file could cause the PHP interpreter to crash or disclose portions of its memory when a PHP script tries to extract Exchangeable image file format (Exif) metadata from the image file. (CVE-2011-4566)

Red Hat would like to thank oCERT for reporting CVE-2011-4885. oCERT acknowledges Julian Walde and Alexander Klink as the original reporters of CVE-2011-4885.

All php53 and php users should upgrade to these updated packages, which contain backported patches to resolve these issues. After installing the updated packages, the httpd daemon must be restarted for the update to take effect.

php development team reports :

Security Enhancements and Fixes in PHP 5.3.9 :

- Added max_input_vars directive to prevent attacks based on hash collisions. (CVE-2011-4885)

- Fixed bug #60150 (Integer overflow during the parsing of invalid exif header). (CVE-2011-4566)

Multiple vulnerabilities has been discovered and corrected in php :

Integer overflow in the exif_process_IFD_TAG function in exif.c in the exif extension in PHP 5.4.0beta2 on 32-bit platforms allows remote attackers to read the contents of arbitrary memory locations or cause a denial of service via a crafted offset_val value in an EXIF header in a JPEG file, a different vulnerability than CVE-2011-0708 (CVE-2011-4566).

PHP before 5.3.9 computes hash values for form parameters without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted parameters (CVE-2011-4885).

The updated packages have been patched to correct this issue.

Florent Hochwelker discovered that PHP incorrectly handled certain EXIF headers in JPEG files. A remote attacker could exploit this issue to view sensitive information or cause the PHP server to crash.

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	Severity
78134	F5 Networks BIG-IP : Multiple PHP vulnerabilities (K13519)	Nessus	F5 Networks Local Security Checks	critical
74580	openSUSE Security Update : php5 (openSUSE-SU-2012:0426-1)	Nessus	SuSE Local Security Checks	high
69644	Amazon Linux AMI : php (ALAS-2012-37)	Nessus	Amazon Linux Local Security Checks	medium
68442	Oracle Linux 4 : php (ELSA-2012-0071)	Nessus	Oracle Linux Local Security Checks	medium
68432	Oracle Linux 5 : php (ELSA-2012-0033)	Nessus	Oracle Linux Local Security Checks	high
68431	Oracle Linux 5 / 6 : php / php53 (ELSA-2012-0019)	Nessus	Oracle Linux Local Security Checks	medium
67087	CentOS 4 : php (CESA-2012:0071)	Nessus	CentOS Local Security Checks	medium
62236	GLSA-201209-03 : PHP: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical
61227	Scientific Linux Security Update : php on SL4.x i386/x86_64 (20120130)	Nessus	Scientific Linux Local Security Checks	medium
61220	Scientific Linux Security Update : php on SL5.x i386/x86_64 (20120118)	Nessus	Scientific Linux Local Security Checks	high
61219	Scientific Linux Security Update : php53 and php on SL5.x, SL6.x i386/x86_64 (20120111)	Nessus	Scientific Linux Local Security Checks	medium
6482	Mac OS X 10.7 < 10.7.4 Multiple Vulnerabilities	Nessus Network Monitor	Generic	critical
59066	Mac OS X 10.7.x < 10.7.4 Multiple Vulnerabilities (BEAST)	Nessus	MacOS X Local Security Checks	critical
58740	SuSE 11.1 Security Update : PHP5 (SAT Patch Number 5964)	Nessus	SuSE Local Security Checks	high
57753	Debian DSA-2399-2 : php5 - several vulnerabilities	Nessus	Debian Local Security Checks	high
57748	RHEL 4 : php (RHSA-2012:0071)	Nessus	Red Hat Local Security Checks	high
57642	CentOS 5 : php (CESA-2012:0033)	Nessus	CentOS Local Security Checks	high
57594	RHEL 5 : php (RHSA-2012:0033)	Nessus	Red Hat Local Security Checks	high
801116	PHP < 5.3.9 Multiple Vulnerabilities	Log Correlation Engine	Web Servers	high
6263	PHP < 5.3.9 Multiple Vulnerabilities	Nessus Network Monitor	Web Servers	high
57537	PHP < 5.3.9 Multiple Vulnerabilities	Nessus	CGI abuses	high
57494	RHEL 5 / 6 : php53 and php (RHSA-2012:0019)	Nessus	Red Hat Local Security Checks	medium
57489	FreeBSD : php -- multiple vulnerabilities (d3921810-3c80-11e1-97e8-00215c6a37bb)	Nessus	FreeBSD Local Security Checks	medium
57488	CentOS 5 / 6 : php / php53 (CESA-2012:0019)	Nessus	CentOS Local Security Checks	medium
57427	Mandriva Linux Security Advisory : php (MDVSA-2011:197)	Nessus	Mandriva Local Security Checks	medium
57314	Ubuntu 8.04 LTS / 10.04 LTS / 10.10 / 11.04 / 11.10 : php5 vulnerability (USN-1307-1)	Nessus	Ubuntu Local Security Checks	medium

Detections

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CVE-2011-4566

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