Image Slider < 1.1.90 - Arbitrary File Deletion

2016-12-23 00:00
dwxsupport

Strategic Overview

Status
Patched in 1.1.90
Affected Plugin
Image Slider
Affected Version
< 1.1.90
CVSS
8.1High
Weakness type
CWE-73 · External Control of File Name or Path
CVE
CVE pending
View all Image Slider vulnerabilities

At a glance

This record tracks a high-severity External Control of File Name or Path vulnerability in the Image Slider WordPress plugin, affecting versions < 1.1.90. It carries a CVSS score of 8.1 (reachable over the network; low attack complexity; high integrity, availability impact). The issue is fixed in version 1.1.90; sites on affected versions should update now. Disclosed December 2016, reported by dwxsupport.

Vulnerability Overview

The Image Slider plugin for WordPress is vulnerable to Arbitrary File Deletion in versions up to, and including, 1.1.89. This is due to allowing any user to edit 'Sliders'. This makes it possible for authenticated attackers with account level to create/edit posts to delete any files found in the plugin.

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 integrity, availability.

CWE-73: External Control of File Name or Path

The product allows user input to control or influence paths or file names that are used in filesystem operations.

Remediation

Update to version 1.1.90, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Image Slider: 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: Image Slider 1.1.90 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Scanner
  • Alerts

External References

Related records

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