CVE-2016-5095

HIGH

Description

Integer overflow in the php_escape_html_entities_ex function in ext/standard/html.c in PHP before 5.5.36 and 5.6.x before 5.6.22 allows remote attackers to cause a denial of service or possibly have unspecified other impact by triggering a large output string from a FILTER_SANITIZE_FULL_SPECIAL_CHARS filter_var call. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-5094.

References

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

http://www.debian.org/security/2016/dsa-3602

http://www.openwall.com/lists/oss-security/2016/05/26/3

http://www.securityfocus.com/bid/92144

https://bugs.php.net/bug.php?id=72135

https://gist.github.com/8ef775c117d84ff15185953990a28576

Details

Source: MITRE

Published: 2016-08-07

Updated: 2016-11-28

Type: CWE-190

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: 8.6

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

Impact Score: 4.7

Exploitability Score: 3.9

Severity: HIGH