NULL pointer dereference in PHP - CVE-2015-7803

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Main Vulnerability Database Vulnerabilities #VU16132

NULL pointer dereference in PHP - CVE-2015-7803

Published: October 28, 2015 / Updated: November 27, 2018


Vulnerability identifier: #VU16132
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2015-7803
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
PHP
Software vendor:
PHP Group

Description

The vulnerability allows a remote attacker to cause DoS condition.

The vulnerability exists due to NULL pointer dereference in the phar_get_entry_data function in ext/phar/util.c in PHP before 5.5.30 and 5.6.x before 5.6.14. A remote attacker can trigger NULL pointer dereference and cause the service to crash via a .phar file with a crafted TAR archive entry in which the Link indicator references a file that does not exist.


Remediation

Install update from vendor's website.

External links