The imapheader function in the IMAP functionality for PHP before 4.3.0 allows remote attackers to cause a denial of service via an e-mail message with a large number of "To" addresses, which triggers an error in the rfc822writeaddress function.

Race condition in the symlink function in PHP 5.1.6 and earlier allows local users to bypass the openbasedir restriction by using a combination of symlink, mkdir, and unlink functions to change the file path after the openbasedir check and before the file is opened by the underlying system, as demonstrated by symlinking a symlink into a subdirectory, to point to a parent directory via .. (dot dot) sequences, and then unlinking the resulting symlink.

The zendrestoreinientrycb function in zendini.c in PHP 5.3.0, 5.2.10, and earlier versions allows context-specific attackers to obtain sensitive information (memory contents) and cause a PHP crash by using the iniset function to declare a variable, then using the inirestore function to restore the variable.

The Apache module for PHP 4.0.0 through PHP 4.0.4, when disabled with the 'engine = off' option for a virtual host, may disable PHP for other virtual hosts, which could cause Apache to serve the source code of PHP scripts.

PHP Apache module 4.0.4 and earlier allows remote attackers to bypass .htaccess access restrictions via a malformed HTTP request on an unrestricted page that causes PHP to use those access controls on the next page that is requested.

CRLF injection vulnerability in PHP 4.2.1 through 4.2.3, when allowurlfopen is enabled, allows remote attackers to modify HTTP headers for outgoing requests by causing CRLF sequences to be injected into arguments that are passed to the (1) fopen or (2) file functions.

The mail function in PHP 4.x to 4.2.2 does not filter ASCII control characters from its arguments, which could allow remote attackers to modify mail message content, including mail headers, and possibly use PHP as a "spam proxy."

moveuploadedfile in PHP does not does not check for the base directory (openbasedir), which could allow remote attackers to upload files to unintended locations on the system.

PHP, when not configured with the "displayerrors = Off" setting in php.ini, allows remote attackers to obtain the physical path for an include file via a trailing slash in a request to a directly accessible PHP program, which modifies the base path, causes the include directive to fail, and produces an error message that contains the path.

PHP 4.0 with cURL functions allows remote attackers to bypass the openbasedir setting and read arbitrary files via a file: URL argument to the curlinit function.

The memorylimit functionality in PHP 4.x up to 4.3.7, and 5.x up to 5.0.0RC3, under certain conditions such as when registerglobals is enabled, allows remote attackers to execute arbitrary code by triggering a memorylimit abort during execution of the zendhashinit function and overwriting a HashTable destructor pointer before the initialization of key data structures is complete.

The striptags function in PHP 4.x up to 4.3.7, and 5.x up to 5.0.0RC3, does not filter null (\0) characters within tag names when restricting input to allowed tags, which allows dangerous tags to be processed by web browsers such as Internet Explorer and Safari, which ignore null characters and facilitate the exploitation of cross-site scripting (XSS) vulnerabilities.

The exifreaddata function in the Exif module in PHP before 4.4.1 allows remote attackers to cause a denial of service (infinite loop) via a malformed JPEG image.

The parsestr function in PHP 4.x up to 4.4.0 and 5.x up to 5.0.5, when called with only one parameter, allows remote attackers to enable the registerglobals directive via inputs that cause a request to be terminated due to the memorylimit setting, which causes PHP to set an internal flag that enables registerglobals and allows attackers to exploit vulnerabilities in PHP applications that would otherwise be protected.

Cross-site scripting (XSS) vulnerability in the phpinfo function in PHP 4.x up to 4.4.0 and 5.x up to 5.0.5 allows remote attackers to inject arbitrary web script or HTML via a crafted URL with a "stacked array assignment."

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 fileexists function.

scanf.c in PHP 5.1.4 and earlier, and 4.4.3 and earlier, allows context-dependent attackers to execute arbitrary code via a sscanf PHP function call that performs argument swapping, which increments an index past the end of an array and triggers a buffer over-read.

The errorlog function in basicfunctions.c in PHP before 4.4.4 and 5.x before 5.1.5 allows local users to bypass safe mode and openbasedir restrictions via a "php://" or other scheme in the third argument, which disables safe mode.

PHP before 5.1.3-RC1 might allow remote attackers to obtain portions of memory via crafted binary data sent to a script that processes user input in the htmlentitydecode function and sends the encoded results back to the client, aka a "binary safety" issue. NOTE: this issue has been referred to as a "memory leak," but it is an information leak that discloses memory contents.

Argument injection vulnerability in certain PHP 3.x, 4.x, and 5.x applications, when used with sendmail and when accepting remote input for the additionalparameters argument to the mail function, allows remote attackers to read and create arbitrary files via the sendmail -C and -X arguments. NOTE: it could be argued that this is a class of technology-specific vulnerability, instead of a particular instance; if so, then this should not be included in CVE.

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

The sessionstart 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) PATHINFO, (2) the sessionid function, and (3) the sessionstart function, which are not encoded or filtered when the new session cookie is generated, a related issue to CVE-2006-0207.

Buffer overflow in the makehttpsoaprequest function in PHP before 5.2.2 has unknown impact and remote attack vectors, possibly related to "/" (slash) characters.

Multiple integer signedness errors in the printf function family in PHP 4 before 4.4.5 and PHP 5 before 5.2.1 on 64 bit machines allow context-dependent attackers to execute arbitrary code via (1) certain negative argument numbers that arise in the phpformattedprint function because of 64 to 32 bit truncation, and bypass a check for the maximum allowable value; and (2) a width and precision of -1, which make it possible for the phpsprintfappendstring function to place an internal buffer at an arbitrary memory location.

PHP 4 before 4.4.5 and PHP 5 before 5.2.1, when using an empty session save path (session.savepath), uses the TMPDIR default after checking the restrictions, which allows local users to bypass openbasedir restrictions.

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.

The resource system in PHP 4.0.0 through 4.4.6 and 5.0.0 through 5.2.1 allows context-dependent attackers to execute arbitrary code by interrupting certain functions in the GD (ext/gd) extension and unspecified other extensions via a userspace error handler, which can be used to destroy and modify internal resources.

The mbparsestr function in PHP 4.0.0 through 4.4.6 and 5.0.0 through 5.2.1 sets the internal registerglobals flag and does not disable it in certain cases when a script terminates, which allows remote attackers to invoke available PHP scripts with registerglobals functionality that is not detectable by these scripts, as demonstrated by forcing a memorylimit violation.

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 openbasedir checks, which allows remote attackers to read ZIP archives located outside of the intended directories.

The phpbinary serialization handler in the session extension in PHP before 4.4.5, and 5.x before 5.2.1, allows context-dependent attackers to obtain sensitive information (memory contents) via a serialized variable entry with a large length value, which triggers a buffer over-read.