PT-2021-16340 · WordPress · User Meta Shortcodes

Francesco Carlucci · Published 2021-12-13 · Updated 2021-12-16 · CVE-2021-24859

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: User Meta Shortcodes WordPress plugin versions 0.5 and earlier

Description: The issue allows any user with a role as low as contributor to access other users' metadata by specifying the user login as a parameter, making the WordPress instance vulnerable to data extrafiltration, including password hashes.

Recommendations: For versions 0.5 and earlier, consider disabling the shortcode that allows access to user metadata until a patch is available. Restrict access to the user login parameter in the affected shortcode to minimize the risk of exploitation. As a temporary workaround, limit the role of users who can access the shortcode to higher roles than contributor.

Exploit

Fix

Improper Access Control

Weakness Enumeration

CWE-284

Related Identifiers

CVE-2021-24859

Affected Products

User Meta Shortcodes

References · 4

• 🔥 https://wpscan.com/vulnerability/958f44a5-07e7-4349-9212-2a039a082ba0 · Exploit
• https://osv.dev/vulnerability/CVE-2021-24859 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-24859 · Security Note
• https://t.me/cibsecurity/33820 · Telegram Post