CVE-2022-2839

Zephyr Project Manager < 3.2.55 - Missing Authorization to Cross-Site Scripting

2022-09-08 00:00
Rizacan Tufan

Strategic Overview

Status
Patched in 3.2.55
Affected Plugin
Zephyr Project Manager
Affected Version
< 3.2.55
CVSS
7.2High
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2022-2839
View all Zephyr Project Manager vulnerabilities

At a glance

CVE-2022-2839 is a high-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Zephyr Project Manager WordPress plugin, affecting versions < 3.2.55. It carries a CVSS score of 7.2 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 3.2.55; sites on affected versions should update now. Disclosed September 2022, reported by Rizacan Tufan.

Vulnerability Overview

The Zephyr Project Manager plugin for WordPress is vulnerable to authorization bypass due to a missing capability check and lack of authentication/authorization on its AJAX endpoints in versions up to 3.2.55. This makes it possible for unauthenticated attackers to utilize them. Additionally, user input is not properly sanitized leading to Stored Cross-Site Scripting.

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, and no interaction from a victim user.

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Reaching this weakness in Zephyr Project Manager < 3.2.55 takes a caller who can reach the endpoint. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For Zephyr Project Manager the fix is 3.2.55: builds < 3.2.55 are affected, anything from 3.2.55 onward is not.

Remediation

Update to version 3.2.55, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Zephyr Project Manager: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Zephyr Project Manager 3.2.55 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2022-2839https://www.wordfence.com/threat-intel/vulnerabilities/id/74aad4b3-3e35-4abe-ba26-48334da0facehttps://nvd.nist.gov/vuln/detail/CVE-2022-2839

Related records

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