LTE authentication bypass via invalid NAS message parsing
Published Feb 11, 2022 · Updated Aug 3, 2024
Improper input validation in the Exynos baseband allows attackers to bypass LTE NAS authentication on select Samsung mobile devices. The NAS message parser accepts arbitrary signaling messages from a fake base station instead of correctly validating them. Exploitation requires a fake LTE base station within radio range, and the documented consequence is acceptance of attacker-controlled NAS signaling.
Summary
What happened
Improper input validation in the Exynos baseband allows attackers to bypass LTE NAS authentication on select Samsung mobile devices. The NAS message parser accepts arbitrary signaling messages from a fake base station instead of correctly validating them. Exploitation requires a fake LTE base station within radio range, and the documented consequence is acceptance of attacker-controlled NAS signaling.
The record
- CVE
- CVE-2022-23425
- Published
- Feb 11, 2022
- Updated
- Aug 3, 2024
- Vendor
- Samsung Electronics Co., Ltd.
- Product
- Samsung Mobile Devices
- Classifications
- CWE-20
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 11, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=P(9.0), Q(10.0), R(11.0), S(12.0) with select Exynos devices <SMR Feb-2022 Release 1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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