CVE-2016-4344

CRITICAL

PHP 7.0.0-7.0.3 - Integer Overflow in utf8_encode via Long Argument

Title source: llm
STIX 2.1

Description

Integer overflow in the xml_utf8_encode function in ext/xml/xml.c in PHP before 7.0.4 allows remote attackers to cause a denial of service or possibly have unspecified other impact via a long argument to the utf8_encode function, leading to a heap-based buffer overflow.

References (3)

Core 3
Core References
Exploit, Issue Tracking, Patch, Vendor Advisory x_refsource_confirm
https://bugs.php.net/bug.php?id=71637
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2016/04/28/2
Release Notes, Vendor Advisory x_refsource_confirm
http://php.net/ChangeLog-7.php

Scores

CVSS v3 9.8
EPSS 0.0067
EPSS Percentile 71.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-190
Status published
Products (1)
php/php 7.0.0 - 7.0.4
Published May 22, 2016
Tracked Since Feb 18, 2026