CSRF in Bestwebsoft Htaccess
CVE-2020-8658
The BestWebSoft Htaccess plugin through 1.8.1 for WordPress allows wp-admin/admin.php?page=htaccess.php&action=htaccess_editor CSRF. The flag htccss_nonce_name passes the nonce to WordPress but the plugin does not validate it correctly, resulting in a wrong implementation of anti-CSRF protection. In this way, an attacker is able to direct the victim to a malicious web page that modifies the .htaccess file, and takes control of the website.
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.099 (95.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.099 · newest: 0.099 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- wordpress.org/plugins/htaccess/ (Third Party Advisory)
- github.com/V1n1v131r4/Exploiting-WP-Htaccess-by-BestWebSoft-Plugin/blob/master/… (Exploit, Third Party Advisory)
- wpvulndb.com/vulnerabilities/10060 (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-8658?
- CVE-2020-8658 is a high-severity vulnerability in Bestwebsoft Htaccess, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2020-02-06.
- How severe is CVE-2020-8658?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2020-8658 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.