CVE-2016-5095
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.64%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 8.6 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
- EPSS
- 2.64% probability · 85th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- php/php
- Source
- cve@mitre.org
References
- http://php.net/ChangeLog-5.phpRelease Notes
- http://www.debian.org/security/2016/dsa-3602
- http://www.openwall.com/lists/oss-security/2016/05/26/3Release Notes
- http://www.securityfocus.com/bid/92144
- https://bugs.php.net/bug.php?id=72135
- https://gist.github.com/8ef775c117d84ff15185953990a28576
- http://php.net/ChangeLog-5.phpRelease Notes
- http://www.debian.org/security/2016/dsa-3602
- http://www.openwall.com/lists/oss-security/2016/05/26/3Release Notes
- http://www.securityfocus.com/bid/92144
- https://bugs.php.net/bug.php?id=72135
- https://gist.github.com/8ef775c117d84ff15185953990a28576
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.