#VU16131 NULL pointer dereference in PHP - CVE-2015-4644
Published: November 27, 2018
Vulnerability identifier: #VU16131
Vulnerability risk: 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-2015-4644
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
PHP
PHP
Software vendor:
PHP Group
PHP Group
Description
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists due to the php_pgsql_meta_data function in pgsql.c in the PostgreSQL (aka pgsql) extension in PHP before 5.4.42, 5.5.x before 5.5.26, and 5.6.x before 5.6.10 does not validate token extraction for table names. A remote attacker can trigger NULL pointer dereference and application crash via a crafted name.
The weakness exists due to the php_pgsql_meta_data function in pgsql.c in the PostgreSQL (aka pgsql) extension in PHP before 5.4.42, 5.5.x before 5.5.26, and 5.6.x before 5.6.10 does not validate token extraction for table names. A remote attacker can trigger NULL pointer dereference and application crash via a crafted name.
Remediation
Install update from vendor's website.