Vulnerabilities (CVE)

The fopen function in PHP 5.2.0 does not properly handle invalid URI handlers, which allows context-dependent attackers to bypass safe_mode restrictions and read arbitrary files via a file path specified with an invalid URI, as demonstrated via the srpath URI.

Multiple buffer overflows in PHP before 5.2.1 allow attackers to cause a denial of service and possibly execute arbitrary code via unspecified vectors in the (1) session, (2) zip, (3) imap, and (4) sqlite extensions; (5) stream filters; and the (6) str_replace, (7) mail, (8) ibase_delete_user, (9) ibase_add_user, and (10) ibase_modify_user functions. NOTE: vector 6 might actually be an integer overflow (CVE-2007-1885). NOTE: as of 20070411, vector (3) might involve the imap_mail_compose functi ... Multiple buffer overflows in PHP before 5.2.1 allow attackers to cause a denial of service and possibly execute arbitrary code via unspecified vectors in the (1) session, (2) zip, (3) imap, and (4) sqlite extensions; (5) stream filters; and the (6) str_replace, (7) mail, (8) ibase_delete_user, (9) ibase_add_user, and (10) ibase_modify_user functions. NOTE: vector 6 might actually be an integer overflow (CVE-2007-1885). NOTE: as of 20070411, vector (3) might involve the imap_mail_compose function (CVE-2007-1825).

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Integer overflow in PHP 5 up to 5.1.6 and 4 before 4.3.0 allows remote attackers to execute arbitrary code via an argument to the unserialize PHP function with a large value for the number of array elements, which triggers the overflow in the Zend Engine ecalloc function (Zend/zend_alloc.c).

curl/interface.c in the cURL library (aka libcurl) in PHP 5.2.4 and 5.2.5 allows context-dependent attackers to bypass safe_mode and open_basedir restrictions and read arbitrary files via a file:// request containing a \x00 sequence, a different vulnerability than CVE-2006-2563.

Integer overflow in the substr_compare function in PHP 5.2.1 and earlier allows context-dependent attackers to read sensitive memory via a large value in the length argument, a different vulnerability than CVE-2006-1991.

Multiple buffer overflows in libtidy, as used in the Tidy extension for PHP 5.2.3 and possibly other products, allow context-dependent attackers to execute arbitrary code via (1) a long second argument to the tidy_parse_string function or (2) an unspecified vector to the tidy_repair_string function. NOTE: this might only be an issue in environments where vsnprintf is implemented as a wrapper for vsprintf.

php_imap.c in PHP 5.2.5, 5.2.6, 4.x, and other versions, uses obsolete API calls that allow context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long IMAP request, which triggers an "rfc822.c legacy routine buffer overflow" error message, related to the rfc822_write_address function.

Multiple buffer overflows in php_iisfunc.dll in the iisfunc extension for PHP 5.2.0 and earlier allow context-dependent attackers to execute arbitrary code, probably during Unicode conversion, as demonstrated by a long string in the first argument to the iis_getservicestate function, related to the ServiceId argument to the (1) fnStartService, (2) fnGetServiceState, (3) fnStopService, and possibly other functions.

Unspecified vulnerability in PHP before 5.2.1 allows attackers to "clobber" certain super-global variables via unspecified vectors.

The popen API function in TSRM/tsrm_win32.c in PHP before 5.2.11 and 5.3.x before 5.3.1, when running on certain Windows operating systems, allows context-dependent attackers to cause a denial of service (crash) via a crafted (1) "e" or (2) "er" string in the second argument (aka mode), possibly related to the _fdopen function in the Microsoft C runtime library. NOTE: this might not cross privilege boundaries except in rare cases in which the mode argument is accessible to an attacker outside of ... The popen API function in TSRM/tsrm_win32.c in PHP before 5.2.11 and 5.3.x before 5.3.1, when running on certain Windows operating systems, allows context-dependent attackers to cause a denial of service (crash) via a crafted (1) "e" or (2) "er" string in the second argument (aka mode), possibly related to the _fdopen function in the Microsoft C runtime library. NOTE: this might not cross privilege boundaries except in rare cases in which the mode argument is accessible to an attacker outside of an application that uses the popen function.

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The com_print_typeinfo function in the bz2 extension in PHP 5.2.3 allows context-dependent attackers to cause a denial of service via a long argument.

CRLF injection vulnerability in the ftp_putcmd function in PHP before 4.4.7, and 5.x before 5.2.2 allows remote attackers to inject arbitrary FTP commands via CRLF sequences in the parameters to earlier FTP commands.

The session extension in PHP before 5.2.4 might allow local users to bypass open_basedir restrictions via a session file that is a symlink.

The Component Object Model (COM) functions in PHP 5.x on Windows do not follow safe_mode and disable_functions restrictions, which allows context-dependent attackers to bypass intended limitations, as demonstrated by executing objects with the kill bit set in the corresponding ActiveX control Compatibility Flags, executing programs via a function in compatUI.dll, invoking wscript.shell via wscript.exe, invoking Scripting.FileSystemObject via wshom.ocx, and adding users via a function in shgina.d ... The Component Object Model (COM) functions in PHP 5.x on Windows do not follow safe_mode and disable_functions restrictions, which allows context-dependent attackers to bypass intended limitations, as demonstrated by executing objects with the kill bit set in the corresponding ActiveX control Compatibility Flags, executing programs via a function in compatUI.dll, invoking wscript.shell via wscript.exe, invoking Scripting.FileSystemObject via wshom.ocx, and adding users via a function in shgina.dll, related to the com_load_typelib function.

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The chunk_split function in string.c in PHP 5.2.3 does not properly calculate the needed buffer size due to precision loss when performing integer arithmetic with floating point numbers, which has unknown attack vectors and impact, possibly resulting in a heap-based buffer overflow. NOTE: this is due to an incomplete fix for CVE-2007-2872.

Unspecified vulnerability in the chunk_split function in PHP before 5.2.4 has unknown impact and attack vectors, related to an incorrect size calculation.

The cpdf_open function in the ClibPDF (cpdf) extension in PHP 4.4.6 allows context-dependent attackers to obtain sensitive information (script source code) via a long string in the second argument.

The zip:// URL wrapper provided by the PECL zip extension in PHP before 4.4.7, and 5.2.0 and 5.2.1, does not implement safemode or open_basedir checks, which allows remote attackers to read ZIP archives located outside of the intended directories.

The init_request_info function in sapi/cgi/cgi_main.c in PHP before 5.2.6 does not properly consider operator precedence when calculating the length of PATH_TRANSLATED, which might allow remote attackers to execute arbitrary code via a crafted URI.

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.

ext/filter in PHP 5.2.0, when FILTER_SANITIZE_STRING is used with the FILTER_FLAG_STRIP_LOW flag, does not properly strip HTML tags, which allows remote attackers to conduct cross-site scripting (XSS) attacks via HTML with a '<' character followed by certain whitespace characters, which passes one filter but is collapsed into a valid tag, as demonstrated using %0b.

PHP 4.4.x before 4.4.9, and 5.x through 5.2.6, when used as a FastCGI module, allows remote attackers to cause a denial of service (crash) via a request with multiple dots preceding the extension, as demonstrated using foo..php.

The MySQL extension in PHP 5.2.4 and earlier allows remote attackers to bypass safe_mode and open_basedir restrictions via the MySQL (1) LOAD_FILE, (2) INTO DUMPFILE, and (3) INTO OUTFILE functions, a different issue than CVE-2007-3997.

Buffer overflow in the bundled libxmlrpc library in PHP before 4.4.7, and 5.x before 5.2.2, has unknown impact and remote attack vectors.

PHP 5.2.5 does not enforce (a) open_basedir and (b) safe_mode_exec_dir restrictions for certain functions, which might allow local users to bypass intended access restrictions and call programs outside of the intended directory via the (1) exec, (2) system, (3) shell_exec, (4) passthru, or (5) popen functions, possibly involving pathnames such as "C:" drive notation.

The dl function in PHP 5.2.4 and earlier allows context-dependent attackers to cause a denial of service (application crash) via a long string in the library parameter. NOTE: there are limited usage scenarios under which this would be a vulnerability.

The win32std extension in PHP 5.2.3 does not follow safe_mode and disable_functions restrictions, which allows remote attackers to execute arbitrary commands via the win_shell_execute function.

Double free vulnerability in PHP before 4.4.7, and 5.x before 5.2.2, allows context-dependent attackers to execute arbitrary code by interrupting the session_regenerate_id function, as demonstrated by calling a userspace error handler or triggering a memory limit violation.

The mail function in PHP 4.0.0 through 4.4.6 and 5.0.0 through 5.2.1 truncates e-mail messages at the first ASCIIZ ('\0') byte, which might allow context-dependent attackers to prevent intended information from being delivered in e-mail messages. NOTE: this issue might be security-relevant in cases when the trailing contents of e-mail messages are important, such as logging information or if the message is expected to be well-formed.

Array index error in the imageRotate function in PHP 5.2.8 and earlier allows context-dependent attackers to read the contents of arbitrary memory locations via a crafted value of the third argument (aka the bgd_color or clrBack argument) for an indexed image.

Buffer overflow in PHP 4.4.6 and earlier, and unspecified PHP 5 versions, allows local and possibly remote attackers to execute arbitrary code via long server name arguments to the (1) mssql_connect and (2) mssql_pconnect functions.

Heap-based buffer overflow in ext/mbstring/libmbfl/filters/mbfilter_htmlent.c in the mbstring extension in PHP 4.3.0 through 5.2.6 allows context-dependent attackers to execute arbitrary code via a crafted string containing an HTML entity, which is not properly handled during Unicode conversion, related to the (1) mb_convert_encoding, (2) mb_check_encoding, (3) mb_convert_variables, and (4) mb_parse_str functions.

The php_zip_make_relative_path function in php_zip.c in PHP 5.2.x before 5.2.9 allows context-dependent attackers to cause a denial of service (crash) via a ZIP file that contains filenames with relative paths, which is not properly handled during extraction.

main/streams/plain_wrapper.c in PHP 5.3.x before 5.3.1 does not recognize the safe_mode_include_dir directive, which allows context-dependent attackers to have an unknown impact by triggering the failure of PHP scripts that perform include or require operations, as demonstrated by a script that attempts to perform a require_once on a file in a standard library directory. NOTE: a reliable third party reports that this is not a vulnerability, because it results in a more restrictive security polic ... main/streams/plain_wrapper.c in PHP 5.3.x before 5.3.1 does not recognize the safe_mode_include_dir directive, which allows context-dependent attackers to have an unknown impact by triggering the failure of PHP scripts that perform include or require operations, as demonstrated by a script that attempts to perform a require_once on a file in a standard library directory. NOTE: a reliable third party reports that this is not a vulnerability, because it results in a more restrictive security policy.

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The resource system in PHP 5.0.0 through 5.2.1 allows context-dependent attackers to execute arbitrary code by interrupting the hash_update_file function via a userspace (1) error or (2) stream handler, which can then be used to destroy and modify internal resources. NOTE: it was later reported that PHP 5.2 through 5.2.13 and 5.3 through 5.3.2 are also affected.

PHP before 5.2.12 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.

Cross-site scripting (XSS) vulnerability in PHP, possibly 5.2.7 and earlier, when display_errors is enabled, allows remote attackers to inject arbitrary web script or HTML via unspecified vectors. NOTE: because of the lack of details, it is unclear whether this is related to CVE-2006-0208.

The soap extension in PHP calls php_rand_r with an uninitialized seed variable, which has unknown impact and attack vectors, a related issue to the mcrypt_create_iv issue covered by CVE-2007-2727. Note: The PHP team argue that this is not a valid security issue.

Multiple integer overflows in libgd in PHP before 5.2.4 allow remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a large (1) srcW or (2) srcH value to the (a) gdImageCopyResized function, or a large (3) sy (height) or (4) sx (width) value to the (b) gdImageCreate or the (c) gdImageCreateTrueColor function.

Buffer overflow in the user_filter_factory_create function in PHP before 5.2.2 has unknown impact and local attack vectors.