Heap-based buffer overflow in PHP - CVE-2018-14851

 

Heap-based buffer overflow in PHP - CVE-2018-14851

Published: July 19, 2018 / Updated: August 20, 2018


Vulnerability identifier: #VU13916
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-14851
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: PHP Group
Affected software:
PHP

Detailed vulnerability description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to heap-based buffer overflow (READ of size 48) while reading exif data. A remote attacker can trigger memory corruption and cause the service to crash.

How to mitigate CVE-2018-14851

The vulnerability is addressed in the versions 5.6.37, 7.0.31, 7.1.20, 7.2.8.

Sources