Authentication bypass via captured-message replay
Published Sep 3, 2023 · Updated Sep 27, 2024
Authentication bypass in Hyundai model (2017) allows attackers to replay captured traffic and assume an authenticated state. The public record identifies capture-replay but does not disclose the protocol, message, receiver, or missing freshness check involved. Exploitation requires adjacent-network access and a previously captured valid exchange; the concrete vehicle action and resulting operational effect are undisclosed.
Summary
What happened
Authentication bypass in Hyundai model (2017) allows attackers to replay captured traffic and assume an authenticated state. The public record identifies capture-replay but does not disclose the protocol, message, receiver, or missing freshness check involved. Exploitation requires adjacent-network access and a previously captured valid exchange; the concrete vehicle action and resulting operational effect are undisclosed.
The record
- CVE
- CVE-2023-39373
- Published
- Sep 3, 2023
- Updated
- Sep 27, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-294, CAPEC-60
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 3, 2023CVE publishedPublication date reported by the CVE source.
- Sep 27, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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