CVE-2019-20043

EUVD-2019-10599

27.12.2019, 08:15

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.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	4.3 MEDIUM	NETWORK	LOW	LOW	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Base Score

CVSS 3.x

EPSS Score

Percentile: 78%

Affected Products (NVD)

Vendor	Product	Version
wordpress	wordpress	3.7 ≤ 𝑥 < 5.3.1
debian	debian_linux	9.0
debian	debian_linux	10.0

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

wordpress

bookworm	6.1.6+dfsg1-0+deb12u1 fixed
bookworm (security)	6.1.6+dfsg1-0+deb12u1 fixed
bullseye	5.7.11+dfsg1-0+deb11u1 fixed
bullseye (security)	5.7.11+dfsg1-0+deb11u1 fixed
jessie	not-affected
sid	6.6.1+dfsg1-1 fixed
trixie	6.6.1+dfsg1-1 fixed

Ubuntu Releases

Ubuntu Product

Codename

wordpress

bionic	needs-triage
disco	ignored
eoan	ignored
focal	not-affected
groovy	not-affected
hirsute	not-affected
impish	not-affected
jammy	not-affected
kinetic	not-affected
lunar	not-affected
mantic	not-affected
noble	not-affected
trusty	dne
xenial	needs-triage

Common Weakness Enumeration

CWE-269 - Improper Privilege Management
The software does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

References

https://core.trac.wordpress.org/changeset/46893/trunk

https://github.com/WordPress/wordpress-develop/commit/1d1d5be7aa94608c04516cac4238e8c22b93c1d9

https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-g7rg-hchx-c2gw

https://seclists.org/bugtraq/2020/Jan/8

https://wordpress.org/news/2019/12/wordpress-5-3-1-security-and-maintenance-release/

https://wpvulndb.com/vulnerabilities/9973

https://www.debian.org/security/2020/dsa-4599

https://www.debian.org/security/2020/dsa-4677