CVE-2026-34553 Overview
CVE-2026-34553 is a vulnerability affecting iccDEV, a set of libraries and tools for working with ICC color management profiles. Prior to version 2.3.1.6, there is a defect in LUT (Look-Up Table) dump/iteration logic affecting CIccCLUT::Iterate() and output produced by CIccMBB::Describe() (via CLUT dumping). This vulnerability falls under CWE-562 (Return of Stack Variable Address), which can lead to integrity issues when processing ICC color profiles.
Critical Impact
A defect in the LUT iteration logic could allow local attackers to manipulate color profile processing, potentially affecting data integrity in applications that rely on ICC color management.
Affected Products
- iccDEV versions prior to 2.3.1.6
- Applications utilizing iccDEV libraries for ICC profile processing
- Systems processing untrusted ICC color management profiles
Discovery Timeline
- 2026-03-31 - CVE-2026-34553 published to NVD
- 2026-04-01 - Last updated in NVD database
Technical Details for CVE-2026-34553
Vulnerability Analysis
The vulnerability resides in the LUT (Look-Up Table) dump and iteration logic within the iccDEV library. Specifically, the CIccCLUT::Iterate() function and the output generated by CIccMBB::Describe() through CLUT dumping operations are affected by this defect. The issue is classified as CWE-562 (Return of Stack Variable Address), indicating that the code may return an address of a stack-allocated variable, which becomes invalid once the function returns.
This type of vulnerability can result in unpredictable behavior when the returned pointer is subsequently dereferenced, as the memory location it references may have been overwritten by other stack operations. In the context of ICC color profile processing, this could lead to incorrect color transformations or corrupted output data.
Root Cause
The root cause stems from improper handling of memory references in the CLUT iteration and description functions. When iterating through color lookup tables or generating descriptive output, the affected functions may inadvertently return addresses to stack-allocated variables. This violates safe memory management practices, as stack memory is only valid within the scope of the function that allocated it.
Attack Vector
The vulnerability requires local access to exploit. An attacker would need to provide a specially crafted ICC color profile that triggers the vulnerable code paths in CIccCLUT::Iterate() or CIccMBB::Describe(). When an application processes such a malicious profile using an unpatched version of iccDEV, the defective LUT iteration logic could be triggered.
The attack scenario involves processing untrusted ICC profiles through applications that utilize the vulnerable iccDEV library. The exploitation does not require user interaction or elevated privileges, though successful exploitation is limited to integrity impacts rather than confidentiality breaches or system availability disruption.
Technical details regarding the specific vulnerable code paths can be found in the GitHub Issue #704 and the corresponding security advisory.
Detection Methods for CVE-2026-34553
Indicators of Compromise
- Unexpected crashes or undefined behavior when processing ICC color profiles
- Corrupted color output in applications using iccDEV libraries
- Memory-related warnings or errors in application logs during ICC profile operations
Detection Strategies
- Audit installed versions of iccDEV libraries across development and production environments for versions prior to 2.3.1.6
- Monitor application logs for segmentation faults or memory access violations during color profile processing
- Implement static analysis tools to identify applications linking against vulnerable iccDEV versions
Monitoring Recommendations
- Enable verbose logging for applications that process ICC color profiles to detect anomalous behavior
- Deploy runtime memory sanitizers (AddressSanitizer, Valgrind) in testing environments to identify use-after-return conditions
- Establish baseline behavior for color management operations to detect deviations indicative of exploitation attempts
How to Mitigate CVE-2026-34553
Immediate Actions Required
- Update iccDEV to version 2.3.1.6 or later immediately
- Identify all applications and systems using iccDEV libraries and prioritize patching
- Restrict processing of ICC profiles from untrusted sources until patches are applied
- Review the GitHub Pull Request #737 for implementation details of the fix
Patch Information
The vulnerability has been patched in iccDEV version 2.3.1.6. Organizations should update to this version or later to remediate the vulnerability. The fix addresses the defective LUT dump/iteration logic in CIccCLUT::Iterate() and CIccMBB::Describe() functions. Details of the patch are available in GitHub Pull Request #737, and the complete security advisory can be reviewed at GHSA-5r4q-77w5-3q3h.
Workarounds
- Implement input validation to reject malformed or suspicious ICC color profiles before processing
- Isolate ICC profile processing in sandboxed environments to limit potential impact
- Disable CLUT dumping functionality if not required by your application workflows
- Consider implementing additional memory protection mechanisms such as stack canaries in compilation
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
