K000134747 : PHP vulnerability CVE-2023-0568

Security Advisory Description

In PHP 8.0.X before 8.0.28, 8.1.X before 8.1.16 and 8.2.X before 8.2.3, core path resolution function allocate buffer one byte too small. When resolving paths with lengths close to system MAXPATHLEN setting, this may lead to the byte after the allocated buffer being overwritten with NUL value, which might lead to unauthorized data access or modification. (CVE-2023-0568)

Impact

An authenticated attacker can exploit the vulnerability to access restricted information, modify files, or cause a denial-of-service (DoS). Additionally, the attacker must rely on conditions outside of their control to be successful.