Heap-based buffer overflow in PHP - CVE-2014-4049

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Main Vulnerability Database Vulnerabilities #VU16086

Heap-based buffer overflow in PHP - CVE-2014-4049

Published: November 27, 2018


Vulnerability identifier: #VU16086
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2014-4049
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to heap-based buffer overflow in the php_parserr function in ext/standard/dns.c. A remote attacker can trigger memory corruption via a crafted DNS TXT record, related to the dns_get_record function and cause the service to crash or execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Affected software

PHP
Gentoo Linux
Amazon Linux AMI
SUSE Linux
Slackware Linux
php5 (Ubuntu package)
php (Alpine package)
dev-lang/php
HP-UX Web Server Suite

How to mitigate CVE-2014-4049

Install update from vendor's website.

php5 (Ubuntu package) - addressed in versions 5.3.2-1ubuntu4.25, 5.3.10-1ubuntu3.12
php (Alpine package) - update to 5.3.28-r5
HP-UX Web Server Suite - update to 4.02
dev-lang/php - update to 5.5.16

External References

Related Security Bulletins