CVE-2026-24404: iccDEV Library DoS Vulnerability

CVE-2026-24404 Overview

CVE-2026-24404 is a Null Pointer Dereference and Undefined Behavior vulnerability affecting iccDEV, a library and toolkit used for interacting with, manipulating, and applying ICC color management profiles. The vulnerability exists in the CIccXmlArrayType() function where user-controllable input is unsafely incorporated into ICC profile data or other structured binary blobs without proper validation.

This flaw allows attackers to craft malicious ICC profile data that, when processed by vulnerable versions of iccDEV, can trigger a null pointer dereference condition. Successful exploitation can lead to denial of service, data manipulation, application logic bypass, and potentially code execution.

Critical Impact

Attackers can exploit this vulnerability via network-delivered malicious ICC profiles to crash applications, manipulate color profile data, bypass security controls, or potentially achieve code execution in environments processing untrusted ICC profiles.

Affected Products

• iccDEV versions 2.3.1.1 and below
• Applications and services utilizing vulnerable iccDEV library versions
• Systems processing ICC color management profiles with affected library versions

Discovery Timeline

• 2026-01-24 - CVE-2026-24404 published to NVD
• 2026-01-26 - Last updated in NVD database

Technical Details for CVE-2026-24404

Vulnerability Analysis

The vulnerability resides in the CIccXmlArrayType<T, Tsig>::ParseArray() function within IccXML/IccLibXML/IccUtilXml.cpp. This templated function is responsible for parsing array data from XML nodes into ICC profile structures. The root issue is improper input validation (CWE-20) where the function fails to verify that the pNode parameter is valid before attempting to use it.

When an attacker provides specially crafted input that results in a null XML node being passed to this function, the code proceeds to dereference the null pointer, causing undefined behavior. In most implementations, this manifests as a crash leading to denial of service. However, depending on the application context and memory layout, more severe consequences such as data corruption or code execution may be possible.

The vulnerability is particularly concerning because ICC profiles are commonly embedded in image files (JPEG, PNG, TIFF) and documents, providing a wide attack surface through seemingly innocuous file types.

Root Cause

The root cause is missing input validation in the CIccXmlArrayType<T, Tsig>::ParseArray() function. The code directly uses the pNode parameter to call icXmlNodeCount() without first checking if pNode is null. This violates secure coding practices for handling external input and pointer validation.

The fix is straightforward: add a null check for pNode at the beginning of the function and return false if the pointer is null, preventing the dereference and subsequent undefined behavior.

Attack Vector

An attacker can exploit this vulnerability through network-delivered content, though user interaction is required (such as opening a malicious file). Attack scenarios include:

1. Malicious Image Files: Embedding a crafted ICC profile in image files distributed via email, web, or file sharing
2. Document Exploitation: Including malicious ICC profiles in documents processed by applications using iccDEV
3. Web-based Attacks: Serving images with malicious ICC profiles through web applications that perform server-side color management

The following patch demonstrates the security fix implemented in version 2.3.1.2:

 bool CIccXmlArrayType<T, Tsig>::ParseArray(T* pBuf, icUInt32Number nSize, xmlNode *pNode)
 {
   icUInt32Number n;
+  
+  if (!pNode)
+    return false;
+  
   if (Tsig==icSigFloatArrayType) {
     n = icXmlNodeCount(pNode, "f");
 

Source: GitHub Commit Details

Detection Methods for CVE-2026-24404

Indicators of Compromise

• Unexpected application crashes when processing ICC profiles or image files
• Crash dumps showing null pointer dereference in CIccXmlArrayType::ParseArray() or related iccDEV functions
• Anomalous ICC profile structures in processed files with malformed or missing XML node data

Detection Strategies

• Implement file integrity monitoring for applications using iccDEV libraries
• Deploy endpoint detection rules that identify crashes in color management components
• Use application crash analysis to detect patterns of null pointer dereference in ICC processing functions
• Monitor for unusual ICC profile parsing activity or error rates

Monitoring Recommendations

• Enable verbose logging for applications processing ICC profiles to capture parsing failures
• Configure crash reporting systems to alert on iccDEV-related exceptions
• Implement input validation logging for ICC profile processing pipelines
• Review application logs for repeated ICC parsing errors that may indicate exploitation attempts

How to Mitigate CVE-2026-24404

Immediate Actions Required

• Upgrade iccDEV to version 2.3.1.2 or later immediately
• Audit systems and applications to identify deployments using vulnerable iccDEV versions (2.3.1.1 and below)
• Implement input validation for ICC profile data before processing with iccDEV
• Consider restricting processing of ICC profiles from untrusted sources until patching is complete

Patch Information

The vulnerability has been fixed in iccDEV version 2.3.1.2. The patch adds a null pointer check at the beginning of the CIccXmlArrayType<T, Tsig>::ParseArray() function, ensuring the function safely returns false when provided a null pNode parameter.

For detailed patch information, refer to:

• GitHub Commit Details
• GitHub Security Advisory
• GitHub Issue Tracker

Workarounds

• Implement application-level input validation to reject malformed ICC profile XML data before passing to iccDEV
• Isolate ICC profile processing in sandboxed environments to contain potential exploitation
• Disable or restrict ICC profile processing functionality in applications where color management is not critical
• Deploy network-level filtering to scan and quarantine files with suspicious ICC profile structures

# Configuration example
# Check installed iccDEV version and update if vulnerable
# On systems using package managers:
# apt-get update && apt-get install iccDEV>=2.3.1.2
# 
# For source installations, rebuild with patched version:
git clone https://github.com/InternationalColorConsortium/iccDEV.git
cd iccDEV
git checkout v2.3.1.2  # or latest patched version
mkdir build && cd build
cmake ..
make && make install