CVE-2015-2825

Simple Ads Manager <= 2.5.94 - Arbitrary File Upload

2015-04-01 00:00
Tran Dinh Tien (tien.d.tran () itas vn)

Strategic Overview

Status
Patched in 2.5.96
Affected Plugin
Simple Ads Manager
Affected Version
<= 2.5.94
CVSS
9.8Critical
Weakness type
CWE-434 · Unrestricted Upload of File with Dangerous Type
CVE
CVE-2015-2825
View all Simple Ads Manager vulnerabilities

At a glance

CVE-2015-2825 is a critical-severity Unrestricted Upload of File with Dangerous Type vulnerability in the Simple Ads Manager WordPress plugin, affecting versions <= 2.5.94. It carries a CVSS score of 9.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 2.5.96; sites on affected versions should update now. Disclosed April 2015, reported by Tran Dinh Tien (tien.d.tran () itas vn).

Vulnerability Overview

Unrestricted file upload vulnerability in sam-ajax-admin.php in the Simple Ads Manager plugin before 2.5.96 for WordPress allows remote attackers to execute arbitrary code by uploading a file with an executable extension, then accessing it via a direct request to the file in the directory specified by the path parameter.

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. 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 Simple Ads Manager <= 2.5.94 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 Simple Ads Manager the fix is 2.5.96: builds <= 2.5.94 are affected, anything from 2.5.96 onward is not.

Remediation

Update to version 2.5.96, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Simple Ads Manager: 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: Simple Ads Manager 2.5.96 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Scanner
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2015-2825https://www.wordfence.com/threat-intel/vulnerabilities/id/8621bc52-3a71-4e01-9823-129ce0831ec4https://nvd.nist.gov/vuln/detail/CVE-2015-2825

Related records

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