PHP — популярный язык сценариев общего назначения, особенно подходящий для веб-разработки.

When EXIF extension is parsing EXIF information from an image, e.g. via exif_read_data() function, in versions 7.1.x below 7.1.30, 7.2.x below 7.2.19 and 7.3.x below 7.3.6 it is possible to supply it with data what will cause it to read past the allocated buffer. This may lead to information disclosure or crash.

When processing certain files, PHP EXIF extension in versions 7.1.x below 7.1.29, 7.2.x below 7.2.18 and 7.3.x below 7.3.5 can be caused to read past allocated buffer in exif_process_IFD_TAG function. This may lead to information disclosure or crash.

When processing certain files, PHP EXIF extension in versions 7.1.x below 7.2.8, 7.2.x below 7.2.17 and 7.3.x below 7.3.4 can be caused to read past allocated buffer in exif_process_IFD_TAG function. This may lead to information disclosure or crash.

When processing certain files, PHP EXIF extension in versions 7.1.x below 7.2.8, 7.2.x below 7.2.17 and 7.3.x below 7.3.4 can be caused to read past allocated buffer in exif_iif_add_value function. This may lead to information disclosure or crash.

Use-after-free vulnerability in the add_post_var function in the Posthandler component in PHP 5.6.x before 5.6.1 might allow remote attackers to execute arbitrary code by leveraging a third-party filter extension that accesses a certain ksep value.

PHP 5.2.7 contains an incorrect change to the FILTER_UNSAFE_RAW functionality, and unintentionally disables magic_quotes_gpc regardless of the actual magic_quotes_gpc setting, which might make it easier for context-dependent attackers to conduct SQL injection attacks and unspecified other attacks.

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 sysvshm extension for PHP 5.2 through 5.2.13 and 5.3 through 5.3.2 allows context-dependent attackers to write to arbitrary memory addresses by using an object's __sleep function to interrupt an internal call to the shm_put_var function, which triggers access of a freed resource.

The (1) sqlite_single_query and (2) sqlite_array_query functions in ext/sqlite/sqlite.c in PHP 5.2 through 5.2.13 and 5.3 through 5.3.2 allow context-dependent attackers to execute arbitrary code by calling these functions with an empty SQL query, which triggers access of uninitialized memory.

The dechunk filter in PHP 5.3 through 5.3.2, when decoding an HTTP chunked encoding stream, allows context-dependent attackers to cause a denial of service (crash) and possibly trigger memory corruption via a negative chunk size, which bypasses a signed comparison, related to an integer overflow in the chunk size decoder.