CVE-2019-20043
MEDIUM severity · CVSS 4.3 · Improper privilege management
4.3CVSS MEDIUM
Summary
In in wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php in WordPress 3.7 to 5.3.0, authenticated users who do not have the rights to publish a post are able to mark posts as sticky or unsticky via the REST API. For example, the contributor role does not have such rights, but this allowed them to bypass that. This has been patched in WordPress 5.3.1, along with all the previous WordPress versions from 3.7 to 5.3 via a minor release.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactNone
Integrity impactLow
Availability impactNone
Exploit probability (EPSS)1%
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Official patch: https://core.trac.wordpress.org/changeset/46893/trunk ↗
Additional information
- NVD record
- https://core.trac.wordpress.org/changeset/46893/trunkPatch
- https://wordpress.org/news/2019/12/wordpress-5-3-1-security-and-maintenance-release/Advisory
- https://github.com/WordPress/wordpress-develop/commit/1d1d5be7aa94608c04516cac4238e8c22b93c1d9Advisory
- https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-g7rg-hchx-c2gwAdvisory
- https://seclists.org/bugtraq/2020/Jan/8Advisory
- https://wpvulndb.com/vulnerabilities/9973Advisory
- https://www.debian.org/security/2020/dsa-4599Advisory
- https://www.debian.org/security/2020/dsa-4677Advisory