Vanetza: Remote Denial of Service via Uncaught Exception in ASN.1/OER Parsing

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Summary

CVECVE-2026-43988
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-26 22:16:42 UTC
Updated2026-06-01 18:26:25 UTC
DescriptionVanetza 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 ASN.1/OER parsing pipeline of Vanetza. When processing malformed network packets containing corrupted ASN.1/OER structures (e.g., invalid length fields or malformed certificate encoding), the ASN.1 wrapper (asn1c_wrapper.cpp) raises a std::runtime_error. This exception is not caught at the parsing boundary and propagates to std::terminate, resulting in process termination. This vulnerability is fixed with commit 62dfe58a8342512b6e1947d75821402ada524f1a.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.000390000 probability, percentile 0.118550000 (date 2026-06-02)

Problem Types: CWE-248 | CWE-248 CWE-248: Uncaught Exception

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Riebl Vanetza affected < 62dfe58a8342512b6e1947d75821402ada524f1a Not specified
CNA Riebl Vanetza affected <= 26.02 Not specified

References

ReferenceSourceLinkTags
github.com/riebl/vanetza/security/advisories/GHSA-j6cj-rp87-mfrx 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
github.com/riebl/vanetza/commit/62dfe58a8342512b6e1947d75821402ada524f1a [email protected] github.com
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