CVE-2020-12675

MapPress Maps <= 2.54.5 - Remote Code Execution via Improper Capability Checks in AJAX Calls

2020-05-28 00:00
Alert Logic

Strategic Overview

Status
Patched in 2.54.6
Affected Plugin
MapPress – Google Maps, OpenStreetMap & Leaflet
Affected Version
<= 2.54.5
CVSS
8.8High
Weakness type
CWE-434 · Unrestricted Upload of File with Dangerous Type
CVE
CVE-2020-12675
View all MapPress – Google Maps, OpenStreetMap & Leaflet vulnerabilities

At a glance

CVE-2020-12675 is a high-severity Unrestricted Upload of File with Dangerous Type vulnerability in the MapPress WordPress plugin, affecting versions <= 2.54.5. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). The issue is fixed in version 2.54.6; sites on affected versions should update now. Disclosed May 2020, reported by Alert Logic.

Vulnerability Overview

The mappress-google-maps-for-wordpress plugin before 2.54.6 for WordPress does not correctly implement capability checks for AJAX functions related to creation/retrieval/deletion of PHP template files, leading to Remote Code Execution. NOTE: this issue exists because of an incomplete fix for CVE-2020-12077.

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 interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.

CWE-434: Unrestricted Upload of File with Dangerous Type

Reaching this weakness in MapPress <= 2.54.5 takes a caller who can reach the endpoint. An unrestricted file upload lets a caller store a file whose type or destination the application does not properly constrain.

If an uploaded file lands anywhere the server will execute, the flaw becomes remote code execution and the site should be treated as fully compromised. For MapPress the fix is 2.54.6: builds <= 2.54.5 are affected, anything from 2.54.6 onward is not.

Remediation

Update to version 2.54.6, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to MapPress: WordSec's web application firewall inspects request payloads before WordPress loads them. Classes like this one can leave something behind, so the staged malware scanner is the second half: it looks for dropped files and modified code rather than for the request that created them. None of that substitutes for the fix: MapPress 2.54.6 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Scanner
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2020-12675https://www.wordfence.com/threat-intel/vulnerabilities/id/8202e9e7-b05b-4603-9ebd-8084bf17a230https://nvd.nist.gov/vuln/detail/CVE-2020-12675

Related records

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