CVE-2021-25072

NextScripts: Social Networks Auto-Poster <= 4.3.24 - Arbitrary Post Deletion via Cross-Site Request Forgery

2022-01-03 00:00
Krzysztof Zając

Strategic Overview

Status
Patched in 4.3.25
Affected Plugin
NextScripts: Social Networks Auto-Poster
Affected Version
< 4.3.25
CVSS
6.5Medium
Weakness type
CWE-352 · Cross-Site Request Forgery (CSRF)
CVE
CVE-2021-25072
View all NextScripts: Social Networks Auto-Poster vulnerabilities

At a glance

CVE-2021-25072 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the NextScripts WordPress plugin, affecting versions < 4.3.25. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity; high integrity impact). Exploitation requires no authentication. The issue is fixed in version 4.3.25; sites on affected versions should update now. Disclosed January 2022, reported by Krzysztof Zając.

Vulnerability Overview

The NextScripts: Social Networks Auto-Poster WordPress plugin before 4.3.25 does not have CSRF check in place when deleting items, allowing attacker to make a logged in admin delete arbitrary posts via a CSRF attack

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site. A successful exploit has high impact on integrity.

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

Reaching this weakness in NextScripts < 4.3.25 takes a caller who can reach the endpoint. Cross-site request forgery abuses the fact that browsers attach a victim's cookies to any request, so a state-changing action that only checks who you are, not whether you meant to act, can be triggered from another site.

An attacker who gets a logged-in user to load a crafted page can perform that action as them, with the impact scaling to whatever the victim's role is allowed to do. For NextScripts the fix is 4.3.25: builds < 4.3.25 are affected, anything from 4.3.25 onward is not.

Remediation

Update to version 4.3.25, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to NextScripts: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: NextScripts 4.3.25 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2021-25072https://www.wordfence.com/threat-intel/vulnerabilities/id/418e1f3b-ca99-4576-add9-d6134ba3869dhttps://nvd.nist.gov/vuln/detail/CVE-2021-25072

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C