CVE-2026-44905
- Source
- https://cve.org/CVERecord?id=CVE-2026-44905
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44905.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-44905
- Aliases
-
- GHSA-q9fq-3rx9-7xcv
- Published
- 2026-05-26T21:18:33.445Z
- Modified
- 2026-07-08T08:13:29.752529260Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- Vanetza: Remote Denial of Service via Uncaught OER Encoding Exception in Cryptographic Verification
- Details
-
Vanetza is an open-source implementation of the ETSI C-ITS protocol suite. In 26.02 and earlier, a denial-of-service vulnerability was identified in the cryptographic verification pipeline of Vanetza. When processing incoming V2X messages, the ASN.1 decoder accepts the structure as syntactically valid. However, this reveals a logic-based protocol failure where semantic constraints on specific fields are only strictly enforced during OER re-encoding. Specifically, if a crafted packet contains a certificate where the Psid (Provider Service Identifier) sub-type violates subtype constraints (e.g., out-of-range or invalid CHOICE variant), it is accepted during initial parsing, where subtype constraints are not enforced. Later, when StraightVerifyService attempts to calculate a message hash for cryptographic verification, it must re-encode the signing certificate. The underlying ASN.1 wrapper (asn1cwrapper.cpp) detects the semantic violation during encoding and raises a std::runtimeerror. This exception is not caught within the encoding path and propagates to std::terminate, resulting in immediate process termination. This vulnerability is fixed with commit e1a2e2709210d309458c3d77f98d50dec26c0df0.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44905.json", "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-248" ], "unresolved_ranges": [ { "extracted_events": [ { "fixed": "e1a2e2709210d309458c3d77f98d50dec26c0df0" } ], "source": "AFFECTED_FIELD" } ] }- References