HTTPS interception via shared default TLS key
Published Oct 24, 2022 · Updated May 5, 2025
Hard-coded TLS credentials in Lanner Electronics Inc IAC-AST2500A firmware 1.00.0 allow remote attackers to intercept and alter HTTPS traffic. The HTTPS interface reuses a built-in TLS certificate and cryptographic key by default, enabling an attacker with the shared key to impersonate the BMC. Exploitation requires a network position between a user and the BMC plus interaction with the impersonated endpoint; the consequence is limited to the confidentiality and integrity of that HTTPS session.
Summary
What happened
Hard-coded TLS credentials in Lanner Electronics Inc IAC-AST2500A firmware 1.00.0 allow remote attackers to intercept and alter HTTPS traffic. The HTTPS interface reuses a built-in TLS certificate and cryptographic key by default, enabling an attacker with the shared key to impersonate the BMC. Exploitation requires a network position between a user and the BMC plus interaction with the impersonated endpoint; the consequence is limited to the confidentiality and integrity of that HTTPS session.
The record
- CVE
- CVE-2021-4228
- Published
- Oct 24, 2022
- Updated
- May 5, 2025
- Vendor
- Lanner Electronics Inc
- Product
- IAC-AST2500A
- Classifications
- CWE-798, CWE-321, T1557
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 24, 2022CVE publishedPublication date reported by the CVE source.
- May 5, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=1.00.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
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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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