Stack consumption vulnerability in PHP 5.2 through 5.2.13 and 5.3 through 5.3.2 allows context-dependent attackers to cause a denial of service (PHP crash) via a crafted first argument to the fnmatch function, as demonstrated using a long string.

The GNU C Library (aka glibc or libc6) before 2.12.2 and Embedded GLIBC (EGLIBC) allow context-dependent attackers to execute arbitrary code or cause a denial of service (memory consumption) via a long UTF8 string that is used in an fnmatch call, aka a 'stack extension attack,' a related issue to CVE-2010-2898, CVE-2010-1917, and CVE-2007-4782, as originally reported for use of this library by Google Chrome. (CVE-2011-1071)

PHP was updated to version 5.3.3 to fix serveral security issues.

(CVE-2010-0397, CVE-2010-1860, CVE-2010-1862, CVE-2010-1864, CVE-2010-1866, CVE-2010-1914, CVE-2010-1915, CVE-2010-1917, CVE-2010-2093, CVE-2010-2094, CVE-2010-2097, CVE-2010-2100, CVE-2010-2101, CVE-2010-2190, CVE-2010-2191, CVE-2010-2225, CVE-2010-2531, CVE-2010-2950, CVE-2010-3062, CVE-2010-3063, CVE-2010-3064, CVE-2010-3065)

From Red Hat Security Advisory 2010:0919 :

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

An input validation flaw was discovered in the PHP session serializer.
If a PHP script generated session variable names from untrusted user input, a remote attacker could use this flaw to inject an arbitrary variable into the PHP session. (CVE-2010-3065)

An information leak flaw was discovered in the PHP var_export() function implementation. If some fatal error occurred during the execution of this function (such as the exhaustion of memory or script execution time limit), part of the function's output was sent to the user as script output, possibly leading to the disclosure of sensitive information. (CVE-2010-2531)

A numeric truncation error and an input validation flaw were found in the way the PHP utf8_decode() function decoded partial multi-byte sequences for some multi-byte encodings, sending them to output without them being escaped. An attacker could use these flaws to perform a cross-site scripting attack. (CVE-2009-5016, CVE-2010-3870)

It was discovered that the PHP lcg_value() function used insufficient entropy to seed the pseudo-random number generator. A remote attacker could possibly use this flaw to predict values returned by the function, which are used to generate session identifiers by default.
This update changes the function's implementation to use more entropy during seeding. (CVE-2010-1128)

It was discovered that the PHP fnmatch() function did not restrict the length of the pattern argument. A remote attacker could use this flaw to crash the PHP interpreter where a script used fnmatch() on untrusted matching patterns. (CVE-2010-1917)

A NULL pointer dereference flaw was discovered in the PHP XML-RPC extension. A malicious XML-RPC client or server could use this flaw to crash the PHP interpreter via a specially crafted XML-RPC request.
(CVE-2010-0397)

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.

An input validation flaw was discovered in the PHP session serializer.
If a PHP script generated session variable names from untrusted user input, a remote attacker could use this flaw to inject an arbitrary variable into the PHP session. (CVE-2010-3065)

An information leak flaw was discovered in the PHP var_export() function implementation. If some fatal error occurred during the execution of this function (such as the exhaustion of memory or script execution time limit), part of the function's output was sent to the user as script output, possibly leading to the disclosure of sensitive information. (CVE-2010-2531)

A numeric truncation error and an input validation flaw were found in the way the PHP utf8_decode() function decoded partial multi-byte sequences for some multi-byte encodings, sending them to output without them being escaped. An attacker could use these flaws to perform a cross-site scripting attack. (CVE-2009-5016, CVE-2010-3870)

It was discovered that the PHP lcg_value() function used insufficient entropy to seed the pseudo-random number generator. A remote attacker could possibly use this flaw to predict values returned by the function, which are used to generate session identifiers by default.
This update changes the function's implementation to use more entropy during seeding. (CVE-2010-1128)

It was discovered that the PHP fnmatch() function did not restrict the length of the pattern argument. A remote attacker could use this flaw to crash the PHP interpreter where a script used fnmatch() on untrusted matching patterns. (CVE-2010-1917)

A NULL pointer dereference flaw was discovered in the PHP XML-RPC extension. A malicious XML-RPC client or server could use this flaw to crash the PHP interpreter via a specially crafted XML-RPC request.
(CVE-2010-0397)

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-201110-06 (PHP: Multiple vulnerabilities)

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

    A context-dependent attacker could execute arbitrary code, obtain       sensitive information from process memory, bypass intended access       restrictions, or cause a Denial of Service in various ways.
    A remote attacker could cause a Denial of Service in various ways,       bypass spam detections, or bypass open_basedir restrictions.
  Workaround :

    There is no known workaround at this time.

According to the web server's banner, the version of HP System Management Homepage (SMH) hosted on the remote host is earlier than 6.3.  Such versions are reportedly affected by the following vulnerabilities :

  - An error exists in the function 'fnmatch' in the     bundled version of PHP that can lead to stack     exhaustion. (CVE-2010-1917)

  - An information disclosure vulnerability exists in the     'var_export' function in the bundled version of PHP     that can be triggered when handling certain error     conditions. (CVE-2010-2531)

  - A double free vulnerability in the     'ssl3_get_key_exchange()' function in the third-party     OpenSSL library could be abused to crash the     application. (CVE-2010-2939)

  - A format string vulnerability in the phar extension     in the bundled version of PHP could lead to the     disclosure of memory contents and possibly allow     execution of arbitrary code via a specially crafted     'phar://' URI. (CVE-2010-2950)

  - A NULL pointer dereference in     'ZipArchive::getArchiveComment' included with the     bundled version of PHP can be abused to crash the     application. (CVE-2010-3709)

  - The bundled version of libxml2 may read from invalid     memory locations when processing malformed XPath     expressions, resulting in an application crash.
    (CVE-2010-4008)

  - An error in the 'mb_strcut()' function in the bundled     version of PHP can be exploited by passing a large     'length' parameter to disclose potentially sensitive     information from the heap. (CVE-2010-4156)

  - An as-yet unspecified remote code execution     vulnerability could allow an authenticated user to     execute arbitrary code with system privileges.
    (CVE-2011-1540)

  - An as-yet unspecified, unauthorized access vulnerability     could lead to a complete system compromise.
    (CVE-2011-1541)

PHP was updated to version 5.2.14 to fix serveral security issues :

  - CVE-2010-1860

  - CVE-2010-1862

  - CVE-2010-1864

  - CVE-2010-1914

  - CVE-2010-1915

  - CVE-2010-1917

  - CVE-2010-2093

  - CVE-2010-2094

  - CVE-2010-2097

  - CVE-2010-2100

  - CVE-2010-2101

  - CVE-2010-2190

  - CVE-2010-2191

  - CVE-2010-2225

  - CVE-2010-2484

  - CVE-2010-2531

  - CVE-2010-3062

  - CVE-2010-3063

  - CVE-2010-3064

  - CVE-2010-3065

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

An input validation flaw was discovered in the PHP session serializer.
If a PHP script generated session variable names from untrusted user input, a remote attacker could use this flaw to inject an arbitrary variable into the PHP session. (CVE-2010-3065)

An information leak flaw was discovered in the PHP var_export() function implementation. If some fatal error occurred during the execution of this function (such as the exhaustion of memory or script execution time limit), part of the function's output was sent to the user as script output, possibly leading to the disclosure of sensitive information. (CVE-2010-2531)

A numeric truncation error and an input validation flaw were found in the way the PHP utf8_decode() function decoded partial multi-byte sequences for some multi-byte encodings, sending them to output without them being escaped. An attacker could use these flaws to perform a cross-site scripting attack. (CVE-2009-5016, CVE-2010-3870)

It was discovered that the PHP lcg_value() function used insufficient entropy to seed the pseudo-random number generator. A remote attacker could possibly use this flaw to predict values returned by the function, which are used to generate session identifiers by default.
This update changes the function's implementation to use more entropy during seeding. (CVE-2010-1128)

It was discovered that the PHP fnmatch() function did not restrict the length of the pattern argument. A remote attacker could use this flaw to crash the PHP interpreter where a script used fnmatch() on untrusted matching patterns. (CVE-2010-1917)

A NULL pointer dereference flaw was discovered in the PHP XML-RPC extension. A malicious XML-RPC client or server could use this flaw to crash the PHP interpreter via a specially crafted XML-RPC request.
(CVE-2010-0397)

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 was updated to version 5.2.14 to fix several security issues :

- [CVE-2010-1860](http://cve.mitre.org/cgi-bin/cvename.cgi?nam e=CVE-2010-1860)

- [CVE-2010-1862](http://cve.mitre.org/cgi-bin/cvename.cgi?nam e=CVE-2010-1862)

- [CVE-2010-1864](http://cve.mitre.org/cgi-bin/cvename.cgi?nam e=CVE-2010-1864)

- [CVE-2010-1914](http://cve.mitre.org/cgi-bin/cvename.cgi?nam e=CVE-2010-1914)

- [CVE-2010-1915](http://cve.mitre.org/cgi-bin/cvename.cgi?nam e=CVE-2010-1915)

- [CVE-2010-1917](http://cve.mitre.org/cgi-bin/cvename.cgi?nam e=CVE-2010-1917)

- [CVE-2010-2093](http://cve.mitre.org/cgi-bin/cvename.cgi?nam e=CVE-2010-2093)

- [CVE-2010-2094](http://cve.mitre.org/cgi-bin/cvename.cgi?nam e=CVE-2010-2094)

- [CVE-2010-2097](http://cve.mitre.org/cgi-bin/cvename.cgi?nam e=CVE-2010-2097)

- [CVE-2010-2100](http://cve.mitre.org/cgi-bin/cvename.cgi?nam e=CVE-2010-2100)

- [CVE-2010-2101](http://cve.mitre.org/cgi-bin/cvename.cgi?nam e=CVE-2010-2101)

- [CVE-2010-2190](http://cve.mitre.org/cgi-bin/cvename.cgi?nam e=CVE-2010-2190)

- [CVE-2010-2191](http://cve.mitre.org/cgi-bin/cvename.cgi?nam e=CVE-2010-2191)

- [CVE-2010-2225](http://cve.mitre.org/cgi-bin/cvename.cgi?nam e=CVE-2010-2225)

- [CVE-2010-2484](http://cve.mitre.org/cgi-bin/cvename.cgi?nam e=CVE-2010-2484)

- [CVE-2010-2531](http://cve.mitre.org/cgi-bin/cvename.cgi?nam e=CVE-2010-2531)

- [CVE-2010-3062](http://cve.mitre.org/cgi-bin/cvename.cgi?nam e=CVE-2010-3062)

- [CVE-2010-3063](http://cve.mitre.org/cgi-bin/cvename.cgi?nam e=CVE-2010-3063)

- [CVE-2010-3064](http://cve.mitre.org/cgi-bin/cvename.cgi?nam e=CVE-2010-3064)

- [CVE-2010-3065](http://cve.mitre.org/cgi-bin/cvename.cgi?nam e=CVE-2010-3065)

Auke van Slooten discovered that PHP incorrectly handled certain xmlrpc requests. An attacker could exploit this issue to cause the PHP server to crash, resulting in a denial of service. This issue only affected Ubuntu 6.06 LTS, 8.04 LTS, 9.04 and 9.10. (CVE-2010-0397)

It was discovered that the pseudorandom number generator in PHP did not provide the expected entropy. An attacker could exploit this issue to predict values that were intended to be random, such as session cookies. This issue only affected Ubuntu 6.06 LTS, 8.04 LTS, 9.04 and 9.10. (CVE-2010-1128)

It was discovered that PHP did not properly handle directory pathnames that lacked a trailing slash character. An attacker could exploit this issue to bypass safe_mode restrictions. This issue only affected Ubuntu 6.06 LTS, 8.04 LTS, 9.04 and 9.10. (CVE-2010-1129)

Grzegorz Stachowiak discovered that the PHP session extension did not properly handle semicolon characters. An attacker could exploit this issue to bypass safe_mode restrictions. This issue only affected Ubuntu 8.04 LTS, 9.04 and 9.10. (CVE-2010-1130)

Stefan Esser discovered that PHP incorrectly decoded remote HTTP chunked encoding streams. An attacker could exploit this issue to cause the PHP server to crash and possibly execute arbitrary code with application privileges. This issue only affected Ubuntu 10.04 LTS.
(CVE-2010-1866)

Mateusz Kocielski discovered that certain PHP SQLite functions incorrectly handled empty SQL queries. An attacker could exploit this issue to possibly execute arbitrary code with application privileges.
(CVE-2010-1868)

Mateusz Kocielski discovered that PHP incorrectly handled certain arguments to the fnmatch function. An attacker could exploit this flaw and cause the PHP server to consume all available stack memory, resulting in a denial of service. (CVE-2010-1917)

Stefan Esser discovered that PHP incorrectly handled certain strings in the phar extension. An attacker could exploit this flaw to possibly view sensitive information. This issue only affected Ubuntu 10.04 LTS.
(CVE-2010-2094, CVE-2010-2950)

Stefan Esser discovered that PHP incorrectly handled deserialization of SPLObjectStorage objects. A remote attacker could exploit this issue to view sensitive information and possibly execute arbitrary code with application privileges. This issue only affected Ubuntu 8.04 LTS, 9.04, 9.10 and 10.04 LTS. (CVE-2010-2225)

It was discovered that PHP incorrectly filtered error messages when limits for memory, execution time, or recursion were exceeded. A remote attacker could exploit this issue to possibly view sensitive information. (CVE-2010-2531)

Stefan Esser discovered that the PHP session serializer incorrectly handled the PS_UNDEF_MARKER marker. An attacker could exploit this issue to alter arbitrary session variables. (CVE-2010-3065).

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.

New php packages are available for Slackware 11.0 (extra), 12.0, 12.1, 12.2, 13.0, 13.1, and -current to fix security issues.

Update to PHP 5.3.3 Security Enhancements and Fixes in PHP 5.3.3: * Rewrote var_export() to use smart_str rather than output buffering, prevents data disclosure if a fatal error occurs (CVE-2010-2531). * Fixed a possible resource destruction issues in shm_put_var(). * Fixed a possible information leak because of interruption of XOR operator. * Fixed a possible memory corruption because of unexpected call-time pass by refernce and following memory clobbering through callbacks. * Fixed a possible memory corruption in ArrayObject::uasort(). * Fixed a possible memory corruption in parse_str(). * Fixed a possible memory corruption in pack(). * Fixed a possible memory corruption in substr_replace(). * Fixed a possible memory corruption in addcslashes(). * Fixed a possible stack exhaustion inside fnmatch(). * Fixed a possible dechunking filter buffer overflow. * Fixed a possible arbitrary memory access inside sqlite extension. * Fixed string format validation inside phar extension. * Fixed handling of session variable serialization on certain prefix characters. * Fixed a NULL pointer dereference when processing invalid XML-RPC requests (Fixes CVE-2010-0397, bug #51288). * Fixed SplObjectStorage unserialization problems (CVE-2010-2225). * Fixed possible buffer overflows in mysqlnd_list_fields, mysqlnd_change_user. * Fixed possible buffer overflows when handling error packets in mysqlnd. Full upstream Changelog: http://www.php.net/ChangeLog-5.php#5.3.3

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

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

  - CVE-2010-1917     The fnmatch function can be abused to conduct denial of     service attacks (by crashing the interpreter) by the     means of a stack overflow.

  - CVE-2010-2225     The SplObjectStorage unserializer allows attackers to     execute arbitrary code via serialized data by the means     of a use-after-free vulnerability.

  - CVE-2010-3065     The default sessions serializer does not correctly     handle a special marker, which allows an attacker to     inject arbitrary variables into the session and possibly     exploit vulnerabilities in the unserializer.

  - CVE-2010-1128     For this vulnerability (predictable entropy for the     Linear Congruential Generator used to generate session     ids) we do not consider upstream's solution to be     sufficient. It is recommended to uncomment     the'session.entropy_file' and 'session.entropy_length'     settings in the php.ini files. Further improvements can     be achieved by setting'session.hash_function' to 1 (one)     and incrementing the value of'session.entropy_length'.

According to its banner, the version of PHP 5.3 installed on the remote host is older than 5.3.3.  Such versions may be affected by several security issues :

  - An error exists when processing invalid XML-RPC     requests that can lead to a NULL pointer     dereference. (bug #51288) (CVE-2010-0397)

  - An error exists in the function 'shm_put_var' that     is related to resource destruction.

  - An error exists in the function 'fnmatch' that can lead     to stack exhaustion. (CVE-2010-1917)

  - A memory corruption error exists related to call-time     pass by reference and callbacks.

  - The dechunking filter is vulnerable to buffer overflow.

  - An error exists in the sqlite extension that could     allow arbitrary memory access.

  - An error exists in the 'phar' extension related to     string format validation.

  - The functions 'mysqlnd_list_fields' and     'mysqlnd_change_user' are vulnerable to buffer overflow.

  - The Mysqlnd extension is vulnerable to buffer overflow     attack when handling error packets.

  - The following functions are not properly protected     against function interruptions :

    addcslashes, chunk_split, html_entity_decode,     iconv_mime_decode, iconv_substr, iconv_mime_encode,     htmlentities, htmlspecialchars, str_getcsv,     http_build_query, strpbrk, strtr, str_pad,     str_word_count, wordwrap, strtok, setcookie,     strip_tags, trim, ltrim, rtrim, substr_replace,     parse_str, pack, unpack, uasort, preg_match, strrchr     (CVE-2010-1860, CVE-2010-1862, CVE-2010-1864,     CVE-2010-2097, CVE-2010-2100, CVE-2010-2101,     CVE-2010-2190, CVE-2010-2191, CVE-2010-2484)

  - The following opcodes are not properly protected     against function interruptions :

    ZEND_CONCAT, ZEND_ASSIGN_CONCAT, ZEND_FETCH_RW, XOR     (CVE-2010-2191)

  - The default session serializer contains an error     that can be exploited when assigning session     variables having user defined names. Arbitrary     serialized values can be injected into sessions by     including the PS_UNDEF_MARKER, '!', character in     variable names.

  - A use-after-free error exists in the function     'spl_object_storage_attach'. (CVE-2010-2225)

  - An information disclosure vulnerability exists in the     function 'var_export' when handling certain error     conditions. (CVE-2010-2531)

ID	Name	Product	Family	Severity
79606	F5 Networks BIG-IP : GNU C Library vulnerability (SOL15885)	Nessus	F5 Networks Local Security Checks	critical
75429	openSUSE Security Update : apache2-mod_php5 (openSUSE-SU-2010:0599-1)	Nessus	SuSE Local Security Checks	high
68150	Oracle Linux 4 / 5 : php (ELSA-2010-0919)	Nessus	Oracle Linux Local Security Checks	medium
60908	Scientific Linux Security Update : php on SL4.x, SL5.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	medium
56459	GLSA-201110-06 : PHP: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical
53532	HP System Management Homepage < 6.3 Multiple Vulnerabilities	Nessus	Web Servers	critical
50890	SuSE 11 / 11.1 Security Update : Apache 2 (SAT Patch Numbers 2880 / 2881)	Nessus	SuSE Local Security Checks	high
50862	CentOS 4 / 5 : php (CESA-2010:0919)	Nessus	CentOS Local Security Checks	medium
50841	RHEL 4 / 5 : php (RHSA-2010:0919)	Nessus	Red Hat Local Security Checks	medium
49830	SuSE 10 Security Update : Linux kernel (ZYPP Patch Number 7110)	Nessus	SuSE Local Security Checks	high
49752	openSUSE Security Update : apache2-mod_php5 (openSUSE-SU-2010:0678-1)	Nessus	SuSE Local Security Checks	high
49306	Ubuntu 6.06 LTS / 8.04 LTS / 9.04 / 9.10 / 10.04 LTS : php5 vulnerabilities (USN-989-1)	Nessus	Ubuntu Local Security Checks	high
49210	openSUSE Security Update : apache2-mod_php5 (openSUSE-SU-2010:0599-1)	Nessus	SuSE Local Security Checks	high
48921	Slackware 11.0 / 12.0 / 12.1 / 12.2 / 13.0 / 13.1 / current : php (SSA:2010-240-04)	Nessus	Slackware Local Security Checks	high
48412	Fedora 13 : maniadrive-1.2-22.fc13 / php-5.3.3-1.fc13 / php-eaccelerator-0.9.6.1-2.fc13 (2010-11481)	Nessus	Fedora Local Security Checks	high
48411	Fedora 12 : maniadrive-1.2-22.fc12 / php-5.3.3-1.fc12 / php-eaccelerator-0.9.6.1-2.fc12 (2010-11428)	Nessus	Fedora Local Security Checks	high
48384	Debian DSA-2089-1 : php5 - several vulnerabilities	Nessus	Debian Local Security Checks	high
48245	PHP 5.3 < 5.3.3 Multiple Vulnerabilities	Nessus	CGI abuses	high

Detections

Analytics

CVE-2010-1917

high

Tenable Plugins

critical

high

medium

medium

critical

critical

high

medium

medium

high

high

high

high

high

high

high

high

high