Home/CVE/WordPress before 5.1.1 does not properly filter comment content, leading to Remote Code Execution by unauthenticated use
CVE

CVE-2019-9787

WordPress before 5.1.1 does not properly filter comment content, leading to Remote Code Execution by unauthenticated use

WordPress before 5.1.1 does not properly filter comment content, leading to Remote Code Execution by unauthenticated users in a default configuration. This occurs because CSRF protection is mishandled, and because Search Engine Optimization of A elements is performed incorrectly, leading to XSS. The XSS results in administrative access, which allows arbitrary changes to .php files.

This is related to wp-admin/includes/ajax-actions.php and wp-includes/comment.php.

HIGH · CVSS 8.8 EPSS 0.81017
Act now
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 1% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-352Cross-Site Request Forgery (CSRF)
▤

Affected Products & Versions

1
wordpress< 5.1.1
⚠

Public Exploits & PoCs

1
pocblog.ripstech.com · wordpress-csrf-to-rceblog.ripstech.com
▣

Scoring & Timeline

8.8
HIGH · CVSS v3.0 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD14 Mar 2019 · 04:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.securityfocus.com/bid/107411Third Party AdvisoryVDB Entry
https://github.com/WordPress/WordPress/commit/0292de60ec78c5a44956765189403654fe4d080bPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00044.html
https://wordpress.org/news/2019/03/wordpress-5-1-1-security-and-maintenance-release/Release NotesVendor Advisory
https://wordpress.org/support/wordpress-version/version-5-1-1/Release NotesVendor Advisory
https://wpvulndb.com/vulnerabilities/9230
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