#VU22477 Out-of-bounds read in PHP - CVE-2019-9022
Published: November 1, 2019
Vulnerability identifier: #VU22477
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-9022
CWE-ID: CWE-125
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 gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition within the php_parserr in ext/standard/dns.c when processing DNS_CAA and DNS_ANY responses. A remote attacker controlling a malicious DNS server can trigger out-of-bounds read error and read contents of memory on the system.
Remediation
Install updates from vendor's website.