This security advisory describes one high risk vulnerability.
1) Buffer overflow
Severity: High
CVSSv3: 7.5 [CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C] [PCI]
CVE-ID: CVE-2019-11043
CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in env_path_info in PHP-FPM when processing untrusted input passed via URL. A remote attacker can send a specially crafted HTTP request to the affected server, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system but requires that php-fpm is used with nginx and certain nginx configuration was applied: