PHP object injection in WordPress - CVE-2018-20148

Vulnerability identifier: #VU16525

CSH Severity: High

CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2018-20148

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: Public exploit is available

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to PHP object injection. A remote attacker can craft meta data in a way that resulted in PHP object injection and arbitrary code execution.

WordPress
wordpress (Debian package)

Update to version 5.0.1.

WordPress - update to 5.0.1
wordpress (Debian package) - update to 4.7.5+dfsg-2+deb9u5

• Exploit #8400 - CVE-2018-20148_exploit (Exploit for CVE-2018-20148 - WordPress PHAR deserialization via XMLRPC) (September 25, 2022)

• https://wordpress.org/news/2018/12/wordpress-5-0-1-security-release/

• Multiple vulnerabilities in WordPress
• Debian update for wordpress