CVE-2016-4344 : 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

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.

Published 2016-05-22 01:59:19

Updated 2022-07-20 16:56:47

Source MITRE

View at NVD, CVE.org

Vulnerability category: OverflowDenial of service

Threat overview for CVE-2016-4344

Top countries where our scanners detected CVE-2016-4344

Top open port discovered on systems with this issue 80

IPs affected by CVE-2016-4344 1,308

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2016-4344!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2016-4344

Probability of exploitation activity in the next 30 days: 0.54%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 74 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2016-4344

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.5	HIGH	AV:N/AC:L/Au:N/C:P/I:P/A:P	10.0	6.4	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2016-4344

CWE-190 Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2016-4344

https://bugs.php.net/bug.php?id=71637

PHP :: Sec Bug #71637 :: Multiple Heap Overflow due to integer overflows | xml/filter_url/addcslashes
Exploit;Issue Tracking;Patch;Vendor Advisory

CVEs referencing this url
http://www.openwall.com/lists/oss-security/2016/04/28/2

oss-security - [CVE Requests] PHP issues
Mailing List;Third Party Advisory

CVEs referencing this url
http://php.net/ChangeLog-7.php

PHP: PHP 7 ChangeLog
Release Notes;Vendor Advisory

CVEs referencing this url

Products affected by CVE-2016-4344