Heap-based buffer overflow in PHP - CVE-2016-7134
Published: November 27, 2018
Vulnerability identifier: #VU16137
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2016-7134
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: PHP Group
Affected software:
PHP
PHP
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in ext/curl/interface.c in PHP 7.x before 7.0.10. A remote attacker can use a long string that is mishandled in a curl_escape call. to trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2016-7134
Install update from vendor's website.
Sources
- http://openwall.com/lists/oss-security/2016/09/02/9
- http://www.php.net/ChangeLog-7.php
- http://www.securityfocus.com/bid/92766
- http://www.securitytracker.com/id/1036680
- https://bugs.php.net/bug.php?id=72674
- https://github.com/php/php-src/commit/72dbb7f416160f490c4e9987040989a10ad431c7?w=1
- https://security.gentoo.org/glsa/201611-22