CVE-2021-42362highCWE-434

WordPress Popular Posts <= 5.3.2 Authenticated Arbitrary File Upload

78Vexday Risk Score

Patch soon. It has a working public exploit.

ssvc Attendcvss 8.8epss 80%

from disclosure to weapon0 days

Published on NVDNov 17

1st PoCJul 14

metasploitJun 11

exploitation probability

80%top 1% of all CVEs

observed exploitation

nono source reports it

4 public exploit(s)

The WordPress Popular Posts WordPress plugin is vulnerable to arbitrary file uploads due to insufficient input file type validation found in the ~/src/Image.php file which makes it possible for attackers with contributor level access and above to upload malicious files that can be used to obtain remote code execution, in versions up to and including 5.3.2.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

public PoCs found — 4

exploitdbwww.exploit-db.com/exploits/50129unverified githubgithub.com/simonecris/CVE-2021-42362-PoC★ 0 githubgithub.com/samiba6/CVE-2021-42362★ 0 cve_referencepacketstormsecurity.com/files/165376/WordPress-Popular-Posts-5.3.2-Remote-Code-Execution.htmlunverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References

http://packetstormsecurity.com/files/165376/WordPress-Popular-Posts-5.3.2-Remote-Code-Execution.html https://blog.nintechnet.com/improper-input-validation-fixed-in-wordpress-popular-posts-plugin/https://github.com/cabrerahector/wordpress-popular-posts/commit/d9b274cf6812eb446e4103cb18f69897ec6fe601 https://plugins.trac.wordpress.org/changeset/2542638/wordpress-popular-posts/trunk/src/Image.php https://wpscan.com/vulnerability/bd4f157c-a3d7-4535-a587-0102ba4e3009 https://www.wordfence.com/vulnerability-advisories/#CVE-2021-42362