Heap-based buffer overflow in pcre_compile.c in the Perl-Compatible Regular Expression (PCRE) library 7.7 allows context-dependent attackers to cause a denial of service (crash) or possibly execute arbitrary code via a regular expression that begins with an option and contains multiple branches.

According to its banner, the version of PHP 5.x installed on the remote host is older than 5.2.7.  Such versions may be affected by several security issues : 

  - Missing initialization of 'BG(page_uid)' and  'BG(page_gid)' when PHP is used as an Apache module may allow for bypassing security restrictions due to SAPI 'php_getuid()' overloading.

  - Incorrect 'php_value' order for Apache configuration may allow bypassing PHP's 'safe_mode' setting.

  - File truncation can occur when calling 'dba_replace()' with an invalid argument.

  - The ZipArchive: extractTo() method in the ZipArchive extension fails to filter directory traversal sequences from file names.

  - There is a buffer overflow in the bundled PCRE library fixed by 7.8. (CVE-2008-2371)

  - A buffer overflow in the 'imageloadfont()' function in 'ext/gd/gd.c' can be triggered when a specially crafted font is given. (CVE-2008-3658)

  - There is a buffer overflow in PHP's internal function 'memnstr()', which is exposed to userspace as 'explode()'. (CVE-2008-3659)

  - When used as a FastCGI module, PHP segfaults when opening a file whose name contains two dots (eg, 'file..php'). (CVE-2008-3660)

  - Multiple directory traversal vulnerabilities in functions such as 'posix_access()', 'chdir()', 'ftok()' may allow a remote attacker to bypass 'safe_mode' restrictions. (CVE-2008-2665 and CVE-2008-2666).

  - A buffer overflow may be triggered when processing long message headers in 'php_imap.c' due to use of an obsolete API call. (CVE-2008-2829)  - A buffer overflow error exists in the function 'date_from_ISO8601' function within file 'xmlrpc.c' because user-supplied input is improperly validated. This can be exploited by a remote attacker to cause a denial of service or to execute arbitrary code. (CVE-2014-8626)

USN-624-1 fixed a vulnerability in PCRE. This update provides the corresponding update for Erlang.

Tavis Ormandy discovered that the PCRE library did not correctly handle certain in-pattern options. An attacker could cause applications linked against pcre3 to crash, leading to a denial of service.

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.

Specially crafted regular expressions could lead to a buffer overflow in the pcre library. Applications using pcre to process regular expressions from untrusted sources could therefore potentially be exploited by attackers to execute arbitrary code (CVE-2008-2371).

The remote host is running a version of Mac OS X 10.5.x that is prior to 10.5.7. 

Mac OS X 10.5.7 contains security fixes for the following products :

  - Apache
  - ATS
  - BIND
  - CFNetwork
  - CoreGraphics
  - Cscope
  - CUPS
  - Disk Images
  - enscript
  - Flash Player plug-in
  - Help Viewer
  - iChat
  - International Components for Unicode
  - IPSec
  - Kerberos
  - Kernel
  - Launch Services
  - libxml
  - Net-SNMP
  - Network Time
  - Networking
  - OpenSSL
  - PHP
  - QuickDraw Manager
  - ruby
  - Safari
  - Spotlight
  - system_cmds
  - telnet
  - Terminal
  - WebKit
  - X11

Tavis Ormandy of the Google Security Team discovered a heap-based buffer overflow when compiling certain regular expression patterns.
This could be used by a malicious attacker by sending a specially crafted regular expression to an application using the PCRE library, resulting in the possible execution of arbitrary code or a denial of service (CVE-2008-2371).

The updated packages have been patched to correct this issue.

Secunia reports :

Some vulnerabilities have been reported in PHP, where some have an unknown impact and others can potentially be exploited by malicious people to cause a DoS (Denial of Service) or compromise a vulnerable system.

An input validation error exists within the 'ZipArchive::extractTo()' function when extracting ZIP archives. This can be exploited to extract files to arbitrary locations outside the specified directory via directory traversal sequences in a specially crafted ZIP archive.

An error in the included PCRE library can be exploited to cause a buffer overflow.

The problem is that the 'BG(page_uid)' and 'BG(page_gid)' variables are not initialized. No further information is currently available.

The problem is that the 'php_value' order is incorrect for Apache configurations. No further information is currently available.

An error in the GD library can be exploited to cause a crash via a specially crafted font file.

According to its banner, the version of PHP installed on the remote host is prior to 5.2.7. It is, therefore, affected by multiple vulnerabilities :

  - There is a buffer overflow flaw in the bundled PCRE     library that allows a denial of service attack.
    (CVE-2008-2371)

  - Multiple directory traversal vulnerabilities exist in     functions such as 'posix_access', 'chdir', and 'ftok'     that allow a remote attacker to bypass 'safe_mode'     restrictions. (CVE-2008-2665 and CVE-2008-2666).

  - A buffer overflow flaw in 'php_imap.c' may be triggered     when processing long message headers due to the use of     obsolete API calls. This can be exploited to cause a     denial of service or to execute arbitrary code.
    (CVE-2008-2829)

  - A buffer overflow in the 'imageloadfont' function in     'ext/gd/gd.c' can be triggered when a specially crafted     font is given. This can be exploited to cause a denial     of service or to execute arbitrary code. (CVE-2008-3658)

  - A buffer overflow flaw exists in PHP's internal function     'memnstr' which can be exploited by an attacker using     the delimiter argument to the 'explode' function. This     can be used to cause a denial of service or to execute     arbitrary code. (CVE-2008-3659)

  - When PHP is used as a FastCGI module, an attacker by     requesting a file whose file name extension is preceded     by multiple dots can cause a denial of service.
    (CVE-2008-3660)

  - A heap-based buffer overflow flaw in the mbstring     extension can be triggered via a specially crafted     string containing an HTML entity that is not handled     during Unicode conversion. This can be exploited to     execute arbitrary code.(CVE-2008-5557)

  - Improper initialization of global variables 'page_uid'     and 'page_gid' when PHP is used as an Apache module     allows the bypassing of security restriction due to     SAPI 'php_getuid' function overloading. (CVE-2008-5624)

  - PHP does not enforce the correct restrictions when     'safe_mode' is enabled through a 'php_admin_flag'     setting in 'httpd.conf'. This allows an attacker, by     placing a specially crafted 'php_value' entry in     '.htaccess', to able to write to arbitrary files.
    (CVE-2008-5625)

  - The 'ZipArchive::extractTo' function in the ZipArchive     extension fails to filter directory traversal sequences     from file names. An attacker can exploit this to write     to arbitrary files. (CVE-2008-5658)

  - Under limited circumstances, an attacker can cause a     file truncation to occur when calling the 'dba_replace'     function with an invalid argument. (CVE-2008-7068)

  - A buffer overflow error exists in the function     'date_from_ISO8601' function within file 'xmlrpc.c'     because user-supplied input is improperly validated.
    This can be exploited by a remote attacker to cause a     denial of service or to execute arbitrary code.
    (CVE-2014-8626)

The remote host is affected by the vulnerability described in GLSA-200811-05 (PHP: Multiple vulnerabilities)

    Several vulnerabilitites were found in PHP:
    PHP ships a     vulnerable version of the PCRE library which allows for the     circumvention of security restrictions or even for remote code     execution in case of an application which accepts user-supplied regular     expressions (CVE-2008-0674).
    Multiple crash issues in several     PHP functions have been discovered.
    Ryan Permeh reported that     the init_request_info() function in sapi/cgi/cgi_main.c does not     properly consider operator precedence when calculating the length of     PATH_TRANSLATED (CVE-2008-0599).
    An off-by-one error in the     metaphone() function may lead to memory corruption.
    Maksymilian Arciemowicz of SecurityReason Research reported an     integer overflow, which is triggerable using printf() and related     functions (CVE-2008-1384).
    Andrei Nigmatulin reported a     stack-based buffer overflow in the FastCGI SAPI, which has unknown     attack vectors (CVE-2008-2050).
    Stefan Esser reported that PHP     does not correctly handle multibyte characters inside the     escapeshellcmd() function, which is used to sanitize user input before     its usage in shell commands (CVE-2008-2051).
    Stefan Esser     reported that a short-coming in PHP's algorithm of seeding the random     number generator might allow for predictible random numbers     (CVE-2008-2107, CVE-2008-2108).
    The IMAP extension in PHP uses     obsolete c-client API calls making it vulnerable to buffer overflows as     no bounds checking can be done (CVE-2008-2829).
    Tavis Ormandy     reported a heap-based buffer overflow in pcre_compile.c in the PCRE     version shipped by PHP when processing user-supplied regular     expressions (CVE-2008-2371).
    CzechSec reported that specially     crafted font files can lead to an overflow in the imageloadfont()     function in ext/gd/gd.c, which is part of the GD extension     (CVE-2008-3658).
    Maksymilian Arciemowicz of SecurityReason     Research reported that a design error in PHP's stream wrappers allows     to circumvent safe_mode checks in several filesystem-related PHP     functions (CVE-2008-2665, CVE-2008-2666).
    Laurent Gaffie     discovered a buffer overflow in the internal memnstr() function, which     is used by the PHP function explode() (CVE-2008-3659).
    An     error in the FastCGI SAPI when processing a request with multiple dots     preceding the extension (CVE-2008-3660).
  Impact :

    These vulnerabilities might allow a remote attacker to execute     arbitrary code, to cause a Denial of Service, to circumvent security     restrictions, to disclose information, and to manipulate files.
  Workaround :

    There is no known workaround at this time.

The remote host is running a version of Mac OS X 10.5 or 10.4 that does not have the security update 2008-007 applied. 

This security update contains fixes for the following products :

  - Apache
  - Certificates
  - ClamAV
  - ColorSync
  - CUPS
  - Finder
  - launchd
  - libxslt
  - MySQL Server
  - Networking
  - PHP
  - Postfix
  - PSNormalizer
  - QuickLook
  - rlogin
  - Script Editor
  - Single Sign-On
  - Tomcat
  - vim
  - Weblog

New pcre packages are available for Slackware 12.0, 12.1, and
-current to fix a security issue.

It was discovered that PHP did not properly check the length of the string parameter to the fnmatch function. An attacker could cause a denial of service in the PHP interpreter if a script passed untrusted input to the fnmatch function. (CVE-2007-4782)

Maksymilian Arciemowicz discovered a flaw in the cURL library that allowed safe_mode and open_basedir restrictions to be bypassed. If a PHP application were tricked into processing a bad file:// request, an attacker could read arbitrary files. (CVE-2007-4850)

Rasmus Lerdorf discovered that the htmlentities and htmlspecialchars functions did not correctly stop when handling partial multibyte sequences. A remote attacker could exploit this to read certain areas of memory, possibly gaining access to sensitive information. This issue affects Ubuntu 8.04 LTS, and an updated fix is included for Ubuntu 6.06 LTS, 7.04 and 7.10. (CVE-2007-5898)

It was discovered that the output_add_rewrite_var function would sometimes leak session id information to forms targeting remote URLs.
Malicious remote sites could use this information to gain access to a PHP application user's login credentials. This issue only affects Ubuntu 8.04 LTS. (CVE-2007-5899)

It was discovered that PHP did not properly calculate the length of PATH_TRANSLATED. If a PHP application were tricked into processing a malicious URI, and attacker may be able to execute arbitrary code with application privileges. (CVE-2008-0599)

An integer overflow was discovered in the php_sprintf_appendstring function. Attackers could exploit this to cause a denial of service.
(CVE-2008-1384)

Andrei Nigmatulin discovered stack-based overflows in the FastCGI SAPI of PHP. An attacker may be able to leverage this issue to perform attacks against PHP applications. (CVE-2008-2050)

It was discovered that the escapeshellcmd did not properly process multibyte characters. An attacker may be able to bypass quoting restrictions and possibly execute arbitrary code with application privileges. (CVE-2008-2051)

It was discovered that the GENERATE_SEED macro produced a predictable seed under certain circumstances. Attackers may by able to easily predict the results of the rand and mt_rand functions. (CVE-2008-2107, CVE-2008-2108)

Tavis Ormandy discovered that the PCRE library did not correctly handle certain in-pattern options. An attacker could cause PHP applications using pcre to crash, leading to a denial of service.
USN-624-1 fixed vulnerabilities in the pcre3 library. This update provides the corresponding update for PHP. (CVE-2008-2371)

It was discovered that php_imap used obsolete API calls. If a PHP application were tricked into processing a malicious IMAP request, an attacker could cause a denial of service or possibly execute code with application privileges. (CVE-2008-2829).

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.

Tavis Ormandy discovered that the PCRE library did not correctly handle certain in-pattern options. An attacker could cause applications linked against pcre3 to crash, leading to a denial of service.

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 affected by the vulnerability described in GLSA-200807-03 (PCRE: Buffer overflow)

    Tavis Ormandy of the Google Security team reported a heap-based buffer     overflow when compiling regular expression patterns containing     'Internal Option Settings' such as '(?i)'.
  Impact :

    A remote attacker could exploit this vulnerability by sending a     specially crafted regular expression to an application making use of     the PCRE library, which could possibly lead to the execution of     arbitrary code or a Denial of Service.
  Workaround :

    There is no known workaround at this time.

- Fri Jul 4 2008 Tomas Hoger <thoger at redhat.com> -     7.3-4

    - Apply Tavis Ormandy's patch for CVE-2008-2371.

    - Tue Feb 12 2008 Tomas Hoger <thoger at redhat.com> -       7.3-3

    - Backport patch from upstream pcre 7.6 to address       buffer overflow caused by 'a character class       containing a very large number of characters with       codepoints greater than 255 (in UTF-8 mode)'       CVE-2008-0674, #431660

  - Try re-enabling make check again.

    - Fri Nov 16 2007 Stepan Kasal <skasal at redhat.com> -       7.3-2

    - Remove obsolete ``reqs'

    - add dist tag

    - update BuildRoot

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.

- Fri Jul 4 2008 Tomas Hoger <thoger at redhat.com> -     7.3-4

    - Apply Tavis Ormandy's patch for CVE-2008-2371.

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.

><i>From the release announcement: * Update to PCRE 7.7 - fix a heap-based </I>buffer overflow in PCRE (CVE-2008-2371) * Bug fixes:
528752 Win32 build and SSL not working 539074 Cannot get exit status with g_spawn_command_line_sync() 316221 G_LOCK warns about breaking strict-aliasing rules 519137 g_slice_dup macro needs cast for 64-bit platform 536158 also bump GHashTable version when a node is removed via g_hash_table_iter_remove()/g_hash_table_iter_steal() 529321 make check fails in glib/pcre 314453 Nautilus crashes in Solaris when browsing the attached file 502511 g_assert_cmphex prints invalid message 538119 glib's mainloop leaks a pipe to sub-processes 540459 there are no way of getting the real number of bytes written in GMemoryOutputStream 540423 unrecoverable error after g_seekable_truncate(seekable,0,...) 530196
_g_local_file_has_trash_dir() doesn't handle st_dev == 0 528600 g_dummy_file_get_parent('scheme://example.com/') 536641 Filesystem querying in gio does not list AFS and autofs file systems 537392 Additional colon in xattr name 528433 gdesktopappinfo snafu ... 526320 should not list mounts that the user doesn't have permiss... 527132 nautilus crash when making ftp connection 532852 totem_pl_parser_parse_with_base: assertion `... 459905 Bug in wcwidth data 534085 g_unichar_iswide_cjk() has a totally wrong table * Updated translations: Bulgarian (bg) German (de)

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.

This update fixes a heap-based overflow caused by incorrect option handling in pcre (CVE-2008-2371)

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.

Tavis Ormandy discovered that PCRE, the Perl-Compatible Regular Expression library, may encounter a heap overflow condition when compiling certain regular expressions involving in-pattern options and branches, potentially leading to arbitrary code execution.

The remote host is running a version of Mac OS X 10.5 that is older than version 10.5.7.  Mac OS X 10.5.7 contains security fixes for the following products : 

- Apache
- ATS
- BIND
- CFNetwork
- CoreGraphics
-Cscope
- CUPS
- Disk Images
- enscript
- Flash player
- Help Viewer
- iChat
- Internation Components for Unicode
- IPSec
- Kerberos
- Kernel
- Launch Services
- libxml
- Net-SNMP
- Network Time
- Networking
- OpenSSL
- PHP
- QuickDraw Manager
- ruby
- Safari
- Spotlight
- system_cmds
- telnet
- WebKit
- X11
- Terminal

According to its banner, the version of PHP installed on the remote host is older than 5.2.7.  Such versions may be affected by several security issues : 

  - Missing initialization of 'BG(page_uid)' and  'BG(page_gid)' when PHP is used as an Apache module may allow for bypassing security restrictions due to SAPI 'php_getuid()' overloading.

  - Incorrect 'php_value' order for Apache configuration may allow bypassing PHP's 'safe_mode' setting.

  - File truncation can occur when calling 'dba_replace()' with an invalid argument.

  - The ZipArchive: extractTo() method in the ZipArchive extension fails to filter directory traversal sequences from file names.

  - There is a buffer overflow in the bundled PCRE library fixed by 7.8. (CVE-2008-2371)

  - A buffer overflow in the 'imageloadfont()' function in 'ext/gd/gd.c' can be triggered when a specially crafted font is given. (CVE-2008-3658)

  - There is a buffer overflow in PHP's internal function 'memnstr()', which is exposed to userspace as 'explode()'. (CVE-2008-3659)

  - When used as a FastCGI module, PHP segfaults when opening a file whose name contains two dots (eg, 'file..php'). (CVE-2008-3660)

  - Multiple directory traversal vulnerabilities in functions such as 'posix_access()', 'chdir()', 'ftok()' may allow a remote attacker to bypass 'safe_mode' restrictions. (CVE-2008-2665 and CVE-2008-2666).

  - A buffer overflow may be triggered when processing long message headers in 'php_imap.c' due to use of an obsolete API call. (CVE-2008-2829)

ID	Name	Product	Family	Severity
4779	PHP 5.x < 5.2.7 Multiple Vulnerabilities	Nessus Network Monitor	Web Servers	high
45473	Ubuntu 9.10 : erlang vulnerability (USN-624-2)	Nessus	Ubuntu Local Security Checks	high
40101	openSUSE Security Update : pcre (pcre-54)	Nessus	SuSE Local Security Checks	high
38744	Mac OS X 10.5.x < 10.5.7 Multiple Vulnerabilities	Nessus	MacOS X Local Security Checks	critical
36245	Mandriva Linux Security Advisory : pcre (MDVSA-2008:147)	Nessus	Mandriva Local Security Checks	high
35051	FreeBSD : php -- multiple vulnerabilities (27d01223-c457-11dd-a721-0030843d3802)	Nessus	FreeBSD Local Security Checks	high
35043	PHP 5 < 5.2.7 Multiple Vulnerabilities	Nessus	CGI abuses	high
34787	GLSA-200811-05 : PHP: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical
34374	Mac OS X Multiple Vulnerabilities (Security Update 2008-007)	Nessus	MacOS X Local Security Checks	critical
33754	Slackware 12.0 / 12.1 / current : pcre (SSA:2008-210-09)	Nessus	Slackware Local Security Checks	high
33575	Ubuntu 6.06 LTS / 7.04 / 7.10 / 8.04 LTS : php5 vulnerabilities (USN-628-1)	Nessus	Ubuntu Local Security Checks	critical
33504	Ubuntu 6.06 LTS / 7.04 / 7.10 / 8.04 LTS : pcre3 vulnerability (USN-624-1)	Nessus	Ubuntu Local Security Checks	high
33460	GLSA-200807-03 : PCRE: Buffer overflow	Nessus	Gentoo Local Security Checks	high
33433	openSUSE 10 Security Update : pcre (pcre-5366)	Nessus	SuSE Local Security Checks	high
33415	Fedora 8 : pcre-7.3-4.fc8 (2008-6111)	Nessus	Fedora Local Security Checks	high
33414	Fedora 9 : pcre-7.3-4.fc9 (2008-6110)	Nessus	Fedora Local Security Checks	high
33411	Fedora 9 : glib2-2.16.4-1.fc9 (2008-6048)	Nessus	Fedora Local Security Checks	high
33406	Fedora 8 : glib2-2.14.6-2.fc8 (2008-6025)	Nessus	Fedora Local Security Checks	high
33403	Debian DSA-1602-1 : pcre3 - buffer overflow	Nessus	Debian Local Security Checks	high
5023	Mac OS X 10.5 < 10.5.7 Multiple Vulnerabilities	Nessus Network Monitor	Generic	critical
801088	PHP 5 < 5.2.7 Multiple Vulnerabilities	Log Correlation Engine	Web Servers	high
800792	Mac OS X 10.5 < 10.5.7 Multiple Vulnerabilities	Log Correlation Engine	Operating System Detection	high

Detections

Analytics

CVE-2008-2371

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Tenable Plugins

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