Vulnerability · Published Sep 6, 2022 · Assigned by Wordfence

CVE-2022-2438Broken Link Checker <= 1.11.16 - Authenticated (Admin+) PHAR Deserialization

High 7.2

In plain English

A high-severity unsafe deserialization in Broken Link Checker from wpmudev. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.8% (higher than 79% of all known vulnerabilities).

Severity (CVSS 3.1)7.2High

Exploit odds (30 days)1.8%top 21.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

The Broken Link Checker plugin for WordPress is vulnerable to deserialization of untrusted input via the '$log_file' value in versions up to, and including 1.11.16. This makes it possible for authenticated attackers with administrative privileges and above to call files using a PHAR wrapper that will deserialize the data and call arbitrary PHP Objects that can be used to perform a variety of malicious actions granted a POP chain is also present. It also requires that the attacker is successful in uploading a file with the serialized payload.

Affected products (as reported)

Vendor	Product	Versions
wpmudev	Broken Link Checker	0 – through 1.11.16

Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

In plain English

Official description

Affected products (as reported)

References