Deserialization of Untrusted Data in WordPress - CVE-2020-28032
Published: November 2, 2020 / Updated: November 18, 2021
Vulnerability identifier: #VU48200
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-2020-28032
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when processing serialized data in wp-includes/Requests/Utility/FilteredIterator.php. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
WordPress
Arch Linux
Fedora
wordpress (Debian package)
wordpress
Arch Linux
Fedora
wordpress (Debian package)
wordpress
How to mitigate CVE-2020-28032
Install updates from vendor's website.
WordPress - update to 5.5.2
wordpress (Debian package) - update to 5.0.11+dfsg1-0+deb10u1
wordpress - addressed in versions 5.1.8-1.el6, 5.1.8-1.el7, 5.5.3-1.fc31, 5.5.3-1.fc32, 5.5.3-1.fc33
wordpress (Debian package) - update to 5.0.11+dfsg1-0+deb10u1
wordpress - addressed in versions 5.1.8-1.el6, 5.1.8-1.el7, 5.5.3-1.fc31, 5.5.3-1.fc32, 5.5.3-1.fc33