CVE-2016-6296

HIGH

Description

Integer signedness error in the simplestring_addn function in simplestring.c in xmlrpc-epi through 0.54.2, as used in PHP before 5.5.38, 5.6.x before 5.6.24, and 7.x before 7.0.9, allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a long first argument to the PHP xmlrpc_encode_request function.

References

http://git.php.net/?p=php-src.git;a=commit;h=e6c48213c22ed50b2b987b479fcc1ac709394caa

http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html

http://openwall.com/lists/oss-security/2016/07/24/2

http://php.net/ChangeLog-5.php

http://php.net/ChangeLog-7.php

http://rhn.redhat.com/errata/RHSA-2016-2750.html

http://www.debian.org/security/2016/dsa-3631

http://www.securityfocus.com/bid/92095

http://www.securitytracker.com/id/1036430

http://www.ubuntu.com/usn/USN-3059-1

https://bugs.php.net/72606

https://security.gentoo.org/glsa/201611-22

https://support.apple.com/HT207170

Details

Source: MITRE

Published: 2016-07-25

Updated: 2018-01-05

Type: CWE-119

Risk Information

CVSS v2.0

Base Score: 7.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 10

Severity: HIGH

CVSS v3.0

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL