Unauthenticated equipment access via replayed password hash
Published Aug 31, 2023 · Updated Jan 16, 2025
Authentication bypass in Digi RealPort Protocol allows remote attackers to access connected equipment by replaying an authentication exchange. The device answers a challenge before the client authenticates, allowing a captured password-hash exchange to be reused as authentication. Network access to the configured RealPort service on TCP 771 or encrypted TCP 1027 is required; successful replay grants access to attached serial equipment.
Summary
What happened
Authentication bypass in Digi RealPort Protocol allows remote attackers to access connected equipment by replaying an authentication exchange. The device answers a challenge before the client authenticates, allowing a captured password-hash exchange to be reused as authentication. Network access to the configured RealPort service on TCP 771 or encrypted TCP 1027 is required; successful replay grants access to attached serial equipment.
The record
- CVE
- CVE-2023-4299
- Published
- Aug 31, 2023
- Updated
- Jan 16, 2025
- Vendor
- Digi International
- Product
- Digi One SP IA
- Classifications
- CWE-836, T1550.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 31, 2023CVE publishedPublication date reported by the CVE source.
- Jan 16, 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=all versions
What conditions does exploitation require?
What is affected?
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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