# CVE-2024-10924

The Really Simple Security (Free, Pro, and Pro Multisite) plugins for WordPress are vulnerable to authentication bypass in versions 9.0.0 to 9.1.1.1. This is due to improper user check error handling in the two-factor REST API actions with the 'check_login_and_get_user' function. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, when the "Two-Factor Authentication" setting is enabled (disabled by default).

- Page: https://www.vulneraibility.com/cve/CVE-2024-10924
- CVSS: 9.8
- Known exploited: not in CISA KEV as of our last sync
- EPSS: 82.22% (percentile 99.7)
- Public exploit code: 1 on Exploit-DB · 1 Metasploit module · 20 GitHub proofs of concept · 1 Nuclei template (first 2024-11-14)
- CISA SSVC: exploitation none, automatable yes, technical impact total (assessed 2024-11-15)
- Weakness: CWE-288
- Published: 2024-11-15

## Affected versions

- Really Simple Plugins Really Simple Security Pro: affected >= 9.0.0 and <= 9.1.1.1
- Really Simple Plugins Really Simple Security Pro multisite: affected >= 9.0.0 and <= 9.1.1.1
- rogierlankhorst Really Simple Security – Simple and Performant Security (formerly Really Simple SSL): affected >= 9.0.0 and <= 9.1.1.1

A version outside these ranges is not a statement that it is unaffected.

## References

- [other] https://www.wordfence.com/threat-intel/vulnerabilities/id/7d5d05ad-1a7a-43d2-bbbf-597e975446be?source=cve
- [other] https://plugins.trac.wordpress.org/browser/really-simple-ssl/tags/9.1.1.1/security/wordpress/two-fa/class-rsssl-two-factor-on-board-api.php#L67
- [other] https://plugins.trac.wordpress.org/browser/really-simple-ssl/tags/9.1.1.1/security/wordpress/two-fa/class-rsssl-two-factor-on-board-api.php#L277
- [other] https://plugins.trac.wordpress.org/browser/really-simple-ssl/tags/9.1.1.1/security/wordpress/two-fa/class-rsssl-two-factor-on-board-api.php#L278
- [other] https://plugins.trac.wordpress.org/changeset/3188431/really-simple-ssl
- [other] https://www.wordfence.com/blog/2024/11/really-simple-security-vulnerability/
- [other] https://github.com/JoshuaProvoste/0-click-RCE-Exploit-for-CVE-2024-10924

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.