Unspecified vulnerability in PHP before 5.2.11, and 5.3.x before 5.3.1, has unknown impact and attack vectors related to "missing sanity checks around exif processing."

The remote Oracle Linux 5 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2010-0040 advisory.

    - add security fix for CVE-2009-4142 (#543469)
    - add security fixes for CVE-2009-2687, CVE-2009-3291, CVE-2009-3292,       CVE-2009-3546 CVE-2009-4017 (#541597)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

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

CVE-2009-2687 php: exif_read_data crash on corrupted JPEG files

CVE-2009-3292 php: exif extension: Multiple missing sanity checks in EXIF file processing

CVE-2009-3291 php: openssl extension: Incorrect verification of SSL certificate with NUL in name

CVE-2009-3546 gd: insufficient input validation in _gdGetColors()

CVE-2009-4017 PHP: resource exhaustion attack via upload requests with lots of files

CVE-2009-4142 php: htmlspecialchars() insufficient checking of input for multi-byte encodings

Multiple missing input sanitization flaws were discovered in PHP's exif extension. A specially crafted image file could cause the PHP interpreter to crash or, possibly, disclose portions of its memory when a PHP script tried to extract Exchangeable image file format (Exif) metadata from the image file. (CVE-2009-2687, CVE-2009-3292)

A missing input sanitization flaw, leading to a buffer overflow, was discovered in PHP's gd library. A specially crafted GD image file could cause the PHP interpreter to crash or, possibly, execute arbitrary code when opened. (CVE-2009-3546)

It was discovered that PHP did not limit the maximum number of files that can be uploaded in one request. A remote attacker could use this flaw to instigate a denial of service by causing the PHP interpreter to use lots of system resources dealing with requests containing large amounts of files to be uploaded. This vulnerability depends on file uploads being enabled (which it is, in the default PHP configuration).
(CVE-2009-4017)

Note: This update introduces a new configuration option, max_file_uploads, used for limiting the number of files that can be uploaded in one request. By default, the limit is 20 files per request.

It was discovered that PHP was affected by the previously published 'null prefix attack', caused by incorrect handling of NUL characters in X.509 certificates. If an attacker is able to get a carefully-crafted certificate signed by a trusted Certificate Authority, the attacker could use the certificate during a man-in-the-middle attack and potentially confuse PHP into accepting it by mistake. (CVE-2009-3291)

It was discovered that PHP's htmlspecialchars() function did not properly recognize partial multi-byte sequences for some multi-byte encodings, sending them to output without them being escaped. An attacker could use this flaw to perform a cross-site scripting attack.
(CVE-2009-4142)

After installing the updated packages, the httpd daemon must be restarted for the update to take effect.

Multiple issues have been fixed in php5 :

  - php_openssl_apply_verification_policy() fails to verify     certificate. (CVE-2009-3291)

  - 'missing sainity checks around exif'. (CVE-2009-3292)

  - unspecified vulnerability in the     imagecolortransparent(). (CVE-2009-3293)

  - denial of service in exif module (CVE-2009-2687)     Additionally we fixed :

  - xmlparse was broken

  - read_exif_data() only returns the first letter of UTF-16     strings

Some vulnerabilities were discovered and corrected in php-5.3.1 :

  - Added max_file_uploads INI directive, which can be set     to limit the number of file uploads per-request to 20 by     default, to prevent possible DOS via temporary file     exhaustion. (Ilia)

  - Added missing sanity checks around exif processing.
    (CVE-2009-3292, Ilia)

  - Fixed a safe_mode bypass in tempnam() identified by     Grzegorz Stachowiak. (CVE-2009-3557, Rasmus)

  - Fixed a open_basedir bypass in posix_mkfifo() identified     by Grzegorz Stachowiak. (CVE-2009-3558, Rasmus)

  - Fixed bug #50063 (safe_mode_include_dir fails).
    (CVE-2009-3559, Johannes, christian at elmerot dot se)

Additionally, some packages which require so, have been rebuilt and are being provided as updates.

Multiple vulnerabilities was discovered and corrected in php :

The php_openssl_apply_verification_policy function in PHP before 5.2.11 does not properly perform certificate validation, which has unknown impact and attack vectors, probably related to an ability to spoof certificates (CVE-2009-3291).

Unspecified vulnerability in PHP before 5.2.11 has unknown impact and attack vectors related to missing sanity checks around exif processing. (CVE-2009-3292)

Unspecified vulnerability in the imagecolortransparent function in PHP before 5.2.11 has unknown impact and attack vectors related to an incorrect sanity check for the color index. (CVE-2009-3293). However in Mandriva we don't use the bundled libgd source in php per default, there is a unsupported package in contrib named php-gd-bundled that eventually will get updated to pickup these fixes.

This update provides a solution to these vulnerabilities.

The remote host is affected by the vulnerability described in GLSA-201001-03 (PHP: Multiple vulnerabilities)

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

    A context-dependent attacker could execute arbitrary code via a     specially crafted string containing an HTML entity when the mbstring     extension is enabled. Furthermore a remote attacker could execute     arbitrary code via a specially crafted GD graphics file.
    A remote attacker could also cause a Denial of Service via a malformed     string passed to the json_decode() function, via a specially crafted     ZIP file passed to the php_zip_make_relative_path() function, via a     malformed JPEG image passed to the exif_read_data() function, or via     temporary file exhaustion. It is also possible for an attacker to spoof     certificates, bypass various safe_mode and open_basedir restrictions     when certain criteria are met, perform Cross-site scripting attacks,     more easily perform SQL injection attacks, manipulate settings of other     virtual hosts on the same server via a malicious .htaccess entry when     running on Apache, disclose memory portions, and write arbitrary files     via a specially crafted ZIP archive. Some vulnerabilities with unknown     impact and attack vectors have been reported as well.
  Workaround :

    There is no known workaround at this time.

Several remote vulnerabilities have been discovered in the PHP 5 hypertext preprocessor. The Common Vulnerabilities and Exposures project identifies the following problems :

The following issues have been fixed in both the stable (lenny) and the oldstable (etch) distributions :

  - CVE-2009-2687 CVE-2009-3292     The exif module did not properly handle malformed jpeg     files, allowing an attacker to cause a segfault,     resulting in a denial of service.

  - CVE-2009-3291     The php_openssl_apply_verification_policy() function did     not properly perform certificate validation.

  - No CVE id yet

    Bogdan Calin discovered that a remote attacker could     cause a denial of service by uploading a large number of     files in using multipart/ form-data requests, causing     the creation of a large number of temporary files.

  To address this issue, the max_file_uploads option introduced in PHP   5.3.1 has been backported. This option limits the maximum number of   files uploaded per request. The default value for this new option is   50. See NEWS.Debian for more information.

The following issue has been fixed in the stable (lenny) distribution :

  - CVE-2009-2626     A flaw in the ini_restore() function could lead to a     memory disclosure, possibly leading to the disclosure of     sensitive data.

In the oldstable (etch) distribution, this update also fixes a regression introduced by the fix for CVE-2008-5658 in DSA-1789-1 (bug #527560).

The remote Redhat Enterprise Linux 4 / 5 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2010:0040 advisory.

  - php: exif_read_data crash on corrupted JPEG files (CVE-2009-2687)

  - php: openssl extension: Incorrect verification of SSL certificate with NUL in name (CVE-2009-3291)

  - php: exif extension: Multiple missing sanity checks in EXIF file processing (CVE-2009-3292)

  - gd: insufficient input validation in _gdGetColors() (CVE-2009-3546)

  - PHP: resource exhaustion attack via upload requests with lots of files (CVE-2009-4017)

  - php: htmlspecialchars() insufficient checking of input for multi-byte encodings (CVE-2009-4142)

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 3, 4, and 5.

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

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

Multiple missing input sanitization flaws were discovered in PHP's exif extension. A specially crafted image file could cause the PHP interpreter to crash or, possibly, disclose portions of its memory when a PHP script tried to extract Exchangeable image file format (Exif) metadata from the image file. (CVE-2009-2687, CVE-2009-3292)

A missing input sanitization flaw, leading to a buffer overflow, was discovered in PHP's gd library. A specially crafted GD image file could cause the PHP interpreter to crash or, possibly, execute arbitrary code when opened. (CVE-2009-3546)

It was discovered that PHP did not limit the maximum number of files that can be uploaded in one request. A remote attacker could use this flaw to instigate a denial of service by causing the PHP interpreter to use lots of system resources dealing with requests containing large amounts of files to be uploaded. This vulnerability depends on file uploads being enabled (which it is, in the default PHP configuration).
(CVE-2009-4017)

Note: This update introduces a new configuration option, max_file_uploads, used for limiting the number of files that can be uploaded in one request. By default, the limit is 20 files per request.

It was discovered that PHP was affected by the previously published 'null prefix attack', caused by incorrect handling of NUL characters in X.509 certificates. If an attacker is able to get a carefully-crafted certificate signed by a trusted Certificate Authority, the attacker could use the certificate during a man-in-the-middle attack and potentially confuse PHP into accepting it by mistake. (CVE-2009-3291)

It was discovered that PHP's htmlspecialchars() function did not properly recognize partial multi-byte sequences for some multi-byte encodings, sending them to output without them being escaped. An attacker could use this flaw to perform a cross-site scripting attack.
(CVE-2009-4142)

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.

Multiple vulnerabilities was discovered and corrected in php :

The dba_replace function in PHP 5.2.6 and 4.x allows context-dependent attackers to cause a denial of service (file truncation) via a key with the NULL byte. NOTE: this might only be a vulnerability in limited circumstances in which the attacker can modify or add database entries but does not have permissions to truncate the file (CVE-2008-7068).

The JSON_parser function (ext/json/JSON_parser.c) in PHP 5.2.x before 5.2.9 allows remote attackers to cause a denial of service (segmentation fault) via a malformed string to the json_decode API function (CVE-2009-1271).

  - Fixed upstream bug #48378 (exif_read_data() segfaults on     certain corrupted .jpeg files) (CVE-2009-2687).

The php_openssl_apply_verification_policy function in PHP before 5.2.11 does not properly perform certificate validation, which has unknown impact and attack vectors, probably related to an ability to spoof certificates (CVE-2009-3291).

Unspecified vulnerability in PHP before 5.2.11 has unknown impact and attack vectors related to missing sanity checks around exif processing. (CVE-2009-3292)

Unspecified vulnerability in the imagecolortransparent function in PHP before 5.2.11 has unknown impact and attack vectors related to an incorrect sanity check for the color index. (CVE-2009-3293)

The _gdGetColors function in gd_gd.c in PHP 5.2.11 and 5.3.0, and the GD Graphics Library 2.x, does not properly verify a certain colorsTotal structure member, which might allow remote attackers to conduct buffer overflow or buffer over-read attacks via a crafted GD file, a different vulnerability than CVE-2009-3293. NOTE: some of these details are obtained from third-party information (CVE-2009-3546).

The tempnam function in ext/standard/file.c in PHP 5.2.11 and earlier, and 5.3.x before 5.3.1, allows context-dependent attackers to bypass safe_mode restrictions, and create files in group-writable or world-writable directories, via the dir and prefix arguments (CVE-2009-3557).

The posix_mkfifo function in ext/posix/posix.c in PHP 5.2.11 and earlier, and 5.3.x before 5.3.1, allows context-dependent attackers to bypass open_basedir restrictions, and create FIFO files, via the pathname and mode arguments, as demonstrated by creating a .htaccess file (CVE-2009-3558).

PHP 5.2.11, and 5.3.x before 5.3.1, does not restrict the number of temporary files created when handling a multipart/form-data POST request, which allows remote attackers to cause a denial of service (resource exhaustion), and makes it easier for remote attackers to exploit local file inclusion vulnerabilities, via multiple requests, related to lack of support for the max_file_uploads directive (CVE-2009-4017).

The proc_open function in ext/standard/proc_open.c in PHP before 5.2.11 and 5.3.x before 5.3.1 does not enforce the (1) safe_mode_allowed_env_vars and (2) safe_mode_protected_env_vars directives, which allows context-dependent attackers to execute programs with an arbitrary environment via the env parameter, as demonstrated by a crafted value of the LD_LIBRARY_PATH environment variable (CVE-2009-4018).

The dba_replace function in PHP 5.2.6 and 4.x allows context-dependent attackers to cause a denial of service (file truncation) via a key with the NULL byte. NOTE: this might only be a vulnerability in limited circumstances in which the attacker can modify or add database entries but does not have permissions to truncate the file (CVE-2008-7068).

The php_openssl_apply_verification_policy function in PHP before 5.2.11 does not properly perform certificate validation, which has unknown impact and attack vectors, probably related to an ability to spoof certificates (CVE-2009-3291).

Unspecified vulnerability in PHP before 5.2.11 has unknown impact and attack vectors related to missing sanity checks around exif processing. (CVE-2009-3292)

Unspecified vulnerability in the imagecolortransparent function in PHP before 5.2.11 has unknown impact and attack vectors related to an incorrect sanity check for the color index. (CVE-2009-3293). However in Mandriva we don't use the bundled libgd source in php per default, there is a unsupported package in contrib named php-gd-bundled that eventually will get updated to pickup these fixes.

The php-suhosin package has been upgraded to 0.9.22 which has better support for apache vhosts.

Packages for 2008.0 are provided for Corporate Desktop 2008.0 customers

This update provides a solution to these vulnerabilities.

Maksymilian Arciemowicz discovered that PHP did not properly validate arguments to the dba_replace function. If a script passed untrusted input to the dba_replace function, an attacker could truncate the database. This issue only applied to Ubuntu 6.06 LTS, 8.04 LTS, and 8.10. (CVE-2008-7068)

It was discovered that PHP's php_openssl_apply_verification_policy function did not correctly handle SSL certificates with zero bytes in the Common Name. A remote attacker could exploit this to perform a man in the middle attack to view sensitive information or alter encrypted communications. (CVE-2009-3291)

It was discovered that PHP did not properly handle certain malformed images when being parsed by the Exif module. A remote attacker could exploit this flaw and cause the PHP server to crash, resulting in a denial of service. (CVE-2009-3292)

Grzegorz Stachowiak discovered that PHP did not properly enforce restrictions in the tempnam function. An attacker could exploit this issue to bypass safe_mode restrictions. (CVE-2009-3557)

Grzegorz Stachowiak discovered that PHP did not properly enforce restrictions in the posix_mkfifo function. An attacker could exploit this issue to bypass open_basedir restrictions. (CVE-2009-3558)

Bogdan Calin discovered that PHP did not limit the number of temporary files created when handling multipart/form-data POST requests. A remote attacker could exploit this flaw and cause the PHP server to consume all available resources, resulting in a denial of service.
(CVE-2009-4017)

ATTENTION: This update changes previous PHP behaviour by limiting the number of files in a POST request to 50. This may be increased by adding a 'max_file_uploads' directive to the php.ini configuration file.

It was discovered that PHP did not properly enforce restrictions in the proc_open function. An attacker could exploit this issue to bypass safe_mode_protected_env_vars restrictions and possibly execute arbitrary code with application privileges. (CVE-2009-4018).

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 remote host is running a version of Mac OS X 10.5 that does not have Security Update 2009-006 applied.

This security update contains fixes for the following products :

  - AFP Client
  - Adaptive Firewall
  - Apache
  - Apache Portable Runtime
  - ATS
  - Certificate Assistant
  - CoreGraphics
  - CUPS
  - Dictionary
  - DirectoryService
  - Disk Images
  - Event Monitor
  - fetchmail
  - FTP Server
  - Help Viewer
  - International Components for Unicode
  - IOKit
  - IPSec
  - libsecurity
  - libxml
  - OpenLDAP
  - OpenSSH
  - PHP
  - QuickDraw Manager
  - QuickLook
  - FreeRADIUS
  - Screen Sharing
  - Spotlight
  - Subversion

Multiple issues have been fixed in php5 :

  - php_openssl_apply_verification_policy() fails to verify     certificate (CVE-2009-3291)

  - 'missing sainity checks around exif' (CVE-2009-3292)

  - unspecified vulnerability in the imagecolortransparent()     (CVE-2009-3293)

  - denial of service in exif module (CVE-2009-2687)     Additionally we fixed :

  - xmlparse was broken

  - read_exif_data() only returns the first letter of UTF-16     strings

Vendor reports

Security Enhancements and Fixes in PHP 5.2.11 : Fixed certificate validation inside php_openssl_apply_verification_policy. Fixed sanity check for the color index in imagecolortransparent. Added missing sanity checks around exif processing. Fixed bug 44683 popen crashes when an invalid mode is passed.

New php packages are available for Slackware 12.0, 12.1, 12.2, 13.0, and -current to fix security issues.

Multiple vulnerabilities was discovered and corrected in php :

The dba_replace function in PHP 5.2.6 and 4.x allows context-dependent attackers to cause a denial of service (file truncation) via a key with the NULL byte. NOTE: this might only be a vulnerability in limited circumstances in which the attacker can modify or add database entries but does not have permissions to truncate the file (CVE-2008-7068).

The php_openssl_apply_verification_policy function in PHP before 5.2.11 does not properly perform certificate validation, which has unknown impact and attack vectors, probably related to an ability to spoof certificates (CVE-2009-3291).

Unspecified vulnerability in PHP before 5.2.11 has unknown impact and attack vectors related to missing sanity checks around exif processing. (CVE-2009-3292)

Unspecified vulnerability in the imagecolortransparent function in PHP before 5.2.11 has unknown impact and attack vectors related to an incorrect sanity check for the color index. (CVE-2009-3293). However in Mandriva we don't use the bundled libgd source in php per default, there is a unsupported package in contrib named php-gd-bundled that eventually will get updated to pickup these fixes.

This update provides a solution to these vulnerabilities.

According to its banner, the version of PHP installed on the remote host is earlier than 5.2.11.  Such versions are reportedly affected by multiple issues : 

  - An unspecified error occurs in certificate validation inside 'php_openssl_apply_verification_policy'.
  - An unspecified input validation vulnerability affects the color index in 'imagecolortransparent()'.
  - A denial-of-service vulnerability related to 'popen' when invalid modes are used. (Bug 44683)

According to its banner, the version of PHP installed on the remote host is older than 5.2.11.  Such versions may be affected by several security issues :

  - An unspecified error occurs in certificate validation     inside 'php_openssl_apply_verification_policy'.

  - An unspecified input validation vulnerability affects     the color index in 'imagecolortransparent()'.

  - An unspecified input validation vulnerability affects     exif processing.

  - Calling 'popen()' with an invalid mode can cause a     crash under Windows. (Bug #44683)

  - An integer overflow in 'xml_utf8_decode()' can make it     easier to bypass cross-site scripting and SQL injection     protection mechanisms using a specially crafted string     with a long UTF-8 encoding. (Bug #49687)

  - 'proc_open()' can bypass 'safe_mode_protected_env_vars'.
    (Bug #49026)

ID	Name	Product	Family	Severity
67986	Oracle Linux 5 : php (ELSA-2010-0040)	Nessus	Oracle Linux Local Security Checks	medium
60723	Scientific Linux Security Update : php on SL3.x, SL4.x, SL5.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	high
49828	SuSE 10 Security Update : PHP5 (ZYPP Patch Number 6536)	Nessus	SuSE Local Security Checks	high
48158	Mandriva Linux Security Advisory : php (MDVSA-2009:302)	Nessus	Mandriva Local Security Checks	high
48154	Mandriva Linux Security Advisory : php (MDVSA-2009:248)	Nessus	Mandriva Local Security Checks	high
44892	GLSA-201001-03 : PHP: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical
44805	Debian DSA-1940-1 : php5 - multiple issues	Nessus	Debian Local Security Checks	high
43883	RHEL 4 / 5 : php (RHSA-2010:0040)	Nessus	Red Hat Local Security Checks	medium
43878	CentOS 3 / 4 / 5 : php (CESA-2010:0040)	Nessus	CentOS Local Security Checks	high
43043	Mandriva Linux Security Advisory : php (MDVSA-2009:324)	Nessus	Mandriva Local Security Checks	high
42930	Ubuntu 6.06 LTS / 8.04 LTS / 8.10 / 9.04 / 9.10 : php5 vulnerabilities (USN-862-1)	Nessus	Ubuntu Local Security Checks	high
42433	Mac OS X Multiple Vulnerabilities (Security Update 2009-006)	Nessus	MacOS X Local Security Checks	critical
42320	openSUSE 10 Security Update : apache2-mod_php5 (apache2-mod_php5-6505)	Nessus	SuSE Local Security Checks	high
42177	SuSE 10 Security Update : PHP5 (ZYPP Patch Number 6510)	Nessus	SuSE Local Security Checks	high
42176	SuSE 11 Security Update : PHP5 (SAT Patch Number 1339)	Nessus	SuSE Local Security Checks	high
42174	openSUSE Security Update : apache2-mod_php5 (apache2-mod_php5-1334)	Nessus	SuSE Local Security Checks	high
42173	openSUSE Security Update : apache2-mod_php5 (apache2-mod_php5-1334)	Nessus	SuSE Local Security Checks	high
42094	FreeBSD : php5 -- Multiple security issues (437a68cf-b752-11de-b6eb-00e0815b8da8)	Nessus	FreeBSD Local Security Checks	high
41972	Slackware 12.0 / 12.1 / 12.2 / 13.0 / current : php (SSA:2009-276-02)	Nessus	Slackware Local Security Checks	high
41639	Mandriva Linux Security Advisory : php (MDVSA-2009:247)	Nessus	Mandriva Local Security Checks	high
5178	PHP < 5.2.11 Multiple Vulnerabilities	Nessus Network Monitor	Web Servers	high
41014	PHP < 5.2.11 Multiple Vulnerabilities	Nessus	CGI abuses	high

Detections

Analytics

CVE-2009-3292

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