PT-2021-16339 · WordPress · Totolink

Muhammed Kara · Published 2021-12-13 · Updated 2021-12-16 · CVE-2021-24857

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: ToTop Link WordPress plugin versions 1.7.1 and earlier

Description: The issue arises from the ToTop Link WordPress plugin passing base64 encoded user input to the unserialize() PHP function. This could potentially lead to PHP Object injection if a plugin installed on the blog has a suitable gadget chain.

Recommendations: For ToTop Link WordPress plugin versions 1.7.1 and earlier, consider updating to a version that does not pass user input to the unserialize() function without proper validation, or temporarily restrict the use of the unserialize() function in the plugin until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

Related Identifiers

CVE-2021-24857

Affected Products

Totolink

References · 4

• 🔥 https://wpscan.com/vulnerability/518204d8-fbf5-4bfa-9db5-835f908f8d8e · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-24857 · Security Note
• https://osv.dev/vulnerability/CVE-2021-24857 · Vendor Advisory
• https://t.me/cibsecurity/33831 · Telegram Post