Use-after-free vulnerability in the CURLFile implementation in ext/curl/curl_file.c in PHP before 5.6.27 and 7.x before 7.0.12 allows remote attackers to cause a denial of service or possibly have unspecified other impact via crafted serialized data that is mishandled during __wakeup processing.
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
| Link | Tags |
|---|---|
| https://bugs.php.net/bug.php?id=73147 | exploit vendor advisory |
| http://www.php.net/ChangeLog-7.php | release notes vendor advisory |
| http://www.php.net/ChangeLog-5.php | release notes vendor advisory |
| https://www.tenable.com/security/tns-2016-19 | |
| http://www.securityfocus.com/bid/93577 | vdb entry third party advisory |
| http://www.openwall.com/lists/oss-security/2016/11/01/2 | third party advisory mailing list |
| http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=0e6fe3a4c96be2d3e88389a5776f878021b4c59f | |
| http://www.debian.org/security/2016/dsa-3698 | vendor advisory |