CVE-2021-38315

SP Project & Document Manager <= 4.25 - Reflected Cross-Site Scripting

2021-08-16 16:45
Thinkland Security Team

Strategic Overview

Status
Patched in 4.26
Affected Plugin
SP Project & Document Manager
Affected Version
<= 4.25
CVSS
6.1Medium
Weakness type
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE
CVE-2021-38315
View all SP Project & Document Manager vulnerabilities

At a glance

CVE-2021-38315 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the SP Project & Document Manager WordPress plugin, affecting versions <= 4.25. It carries a CVSS score of 6.1 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 4.26; sites on affected versions should update now. Disclosed August 2021, reported by Thinkland Security Team.

Vulnerability Overview

The SP Project & Document Manager WordPress plugin is vulnerable to attribute-based Reflected Cross-Site Scripting via the from and to parameters in the ~/functions.php file which allows attackers to inject arbitrary web scripts, in versions up to and including 4.25.

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.

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

Reaching this weakness in SP Project & Document Manager <= 4.25 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 SP Project & Document Manager the fix is 4.26: builds <= 4.25 are affected, anything from 4.26 onward is not.

Remediation

Update to version 4.26, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to SP Project & Document Manager: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: SP Project & Document Manager 4.26 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2021-38315https://www.wordfence.com/threat-intel/vulnerabilities/id/bed6b603-c811-4624-9053-1e12029ba73bhttps://nvd.nist.gov/vuln/detail/CVE-2021-38315

Related records

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