PHP 5.4.x < 5.4.39 / 5.5.x < 5.5.23 / 5.6.x < 5.6.7 Multiple Vulnerabilities

Versions of PHP 5.4.x earlier than 5.4.39, 5.5.x earlier than 5.5.23, or 5.6.x earlier than 5.6.7 are exposed to the following issues :

• A use-after-free error exists related to function ‘unserialize’, which can allow a remote attacker to execute arbitrary code. Note that this issue exists due to an incomplete fix for CVE-2014-8142. (Bug 68594 / CVE-2015-0231)

• A heap-based buffer overflow error exists in function ‘regcomp’ in the Henry Spencer regex library due to improper validation of user-supplied input. An attacker can exploit this to cause a denial of service or to execute arbitrary code. (Bug 69248 / CVE-2015-2305)

• An integer overflow error exists in the ‘_zip_cdir_new’ function, due to improper validation of user-supplied input. An attacker, using a crafted ZIP archive, can exploit this to cause a denial of service or to execute arbitrary code. (Bug 69253 / CVE-2015-2331)

• A filter bypass vulnerability exists due to a flaw in the move_uploaded_file() function in which pathnames are truncated when a NULL byte is encountered. This allows a remote attacker, via a crafted second argument, to bypass intended extension restrictions and create files with unexpected names. (Bug 69207 / CVE-2015-2348)

• A use-after-free error exists in the process_nested_data() function. This allows a remote attacker, via a crafted unserialize call, to dereference already freed memory, resulting in the execution of arbitrary code. (Bug 68976 / CVE-2015-2787)

• A type confusion flaw exists in the __call() method and do_soap_call() function in SoapClient that is triggered when handling arrays. This may allow a remote attacker to execute arbitrary code. (CVE-2015-4147, CVE-2015-4148)