The php_wddx_push_element function in ext/wddx/wddx.c in PHP before 5.6.26 and 7.x before 7.0.11 allows remote attackers to cause a denial of service (invalid pointer access and out-of-bounds read) or possibly have unspecified other impact via an incorrect boolean element in a wddxPacket XML document, leading to mishandling in a wddx_deserialize call.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| https://github.com/php/php-src/commit/c4cca4c20e75359c9a13a1f9a36cb7b4e9601d29?w=1 | issue tracking patch |
| http://www.php.net/ChangeLog-7.php | release notes |
| https://security.gentoo.org/glsa/201611-22 | vendor advisory |
| http://www.securitytracker.com/id/1036836 | vdb entry |
| http://www.openwall.com/lists/oss-security/2016/09/15/10 | mailing list |
| https://access.redhat.com/errata/RHSA-2018:1296 | vendor advisory |
| http://www.securityfocus.com/bid/93011 | vdb entry |
| http://www.php.net/ChangeLog-5.php | release notes |
| https://www.tenable.com/security/tns-2016-19 | |
| https://bugs.php.net/bug.php?id=73065 | issue tracking exploit |