PHP 5.6.x < 5.6.26 Multiple Vulnerabilities

critical Web App Scanning Plugin ID 98816

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Synopsis

Description

According to its banner, the version of PHP running on the remote web server is 5.6.x prior to 5.6.26. It is, therefore, affected by multiple vulnerabilities :

- A flaw exists in ext/standard/var_unserializer.re when destroying deserialized objects due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this, via a deserialize call that references a partially constructed object, to corrupt memory, resulting in a denial of service condition. (CVE-2016-7411)

- An heap buffer overflow condition exists in the php_mysqlnd_rowp_read_text_protocol_aux() function within file ext/mysqlnd/mysqlnd_wireprotocol.c due to a failure to verify that a BIT field has the UNSIGNED_FLAG flag. An unauthenticated, remote attacker can exploit this, via specially crafted field metadata, to cause a denial of service condition. (CVE-2016-7412)

- A use-after-free error exists in the wddx_stack_destroy() function within file ext/wddx/wddx.c when deserializing recordset elements. An unauthenticated, remote attacker can exploit this, via a specially crafted wddxPacket XML document, to cause a denial of service condition. (CVE-2016-7413)

- An out-of-bounds access error exists in the phar_parse_zipfile() function within file ext/phar/zip.c due to a failure to ensure that the uncompressed_filesize field is large enough. An unauthenticated, remote attacker can exploit this, via a specially crafted archive, to cause a denial of service condition. (CVE-2016-7414)

- A stack-based buffer overflow condition exists in the ICU4C library, specifically within file common/locid.cpp in the msgfmt_format_message() function, due to a failure to properly restrict the locale length provided to the Locale class. An unauthenticated, remote attacker can exploit this, via a long first argument to a MessageFormatter::formatMessage() function call, to cause a denial of service condition. (CVE-2016-7416)

- A flaw exists in the spl_array_get_dimension_ptr_ptr() function within file ext/spl/spl_array.c due to a failure to properly validate the return value and data type when deserializing SplArray. An unauthenticated, remote attacker can exploit this, via specially crafted serialized data, to cause a denial of service condition. (CVE-2016-7417)

- An out-of-bounds read error exists in the php_wddx_push_element() function within file ext/wddx/wddx.c when handling an incorrect boolean element, which leads to mishandling the wddx_deserialize() call. An unauthenticated, remote attacker can exploit this, via a specially crafted wddxPacket XML document, to cause a denial of service condition. (CVE-2016-7418)

- An out-of-bounds access error exists in the phar_parse_tarfile() function within file ext/phar/tar.c when handling the verification of signatures. An unauthenticated, remote attacker can exploit this to cause an unspecified impact.

- An integer overflow condition exists in the fgetcsv() function when handling CSV field lengths due to improper validation of certain input. An unauthenticated, remote attacker can exploit this to corrupt memory, resulting in a denial of service condition or the execution of arbitrary code.

- An integer overflow condition exists in the wordwrap() function within file ext/standard/string.c due to improper validation of certain input. An unauthenticated, remote attacker can exploit this to corrupt memory, resulting in a denial of service condition or the execution of arbitrary code.

- An integer overflow condition exists in the fgets() function within file ext/standard/file.c due to improper validation of certain input. An unauthenticated, remote attacker can exploit this to corrupt memory, resulting in a denial of service condition or the execution of arbitrary code.

- An integer overflow condition exists in the xml_utf8_encode() function within file ext/xml/xml.c due to improper validation of certain input. An unauthenticated, remote attacker can exploit this to cause an unspecified impact.

- A flaw exists in the exif_process_IFD_in_TIFF() function within file ext/exif/exif.c when handling uninitialized thumbnail data. An unauthenticated, remote attacker can exploit this to disclose memory contents.

Note that the scanner has not attempted to exploit this issue but has instead relied only on the application's self-reported version number.