Heap-based buffer overflow in PHP - CVE-2019-9021
Published: January 10, 2019 / Updated: January 21, 2019
Vulnerability identifier: #VU16906
CSH Severity: Low
CVSS v4: 8.7 [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]
CVE-ID: CVE-2019-9021
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists due to heap-based buffer overflow in phar_detect_phar_fname_ext. A remote attacker can supply a specially crafted input, trigger memory corruption and cause the service to crash.
The weakness exists due to heap-based buffer overflow in phar_detect_phar_fname_ext. A remote attacker can supply a specially crafted input, trigger memory corruption and cause the service to crash.
Affected software
PHP
How to mitigate CVE-2019-9021
The vulnerability has been fixed in the versions 5.6.40, 7.1.26, 7.2.14, 7.3.1.
PHP - addressed in versions 5.6.40, 7.1.26, 7.2.14, 7.3.1