SSH traffic decryption via hard-coded host key
Published Sep 2, 2023 · Updated Oct 28, 2024
Hard-coded SSH host key use in Moxa MXsecurity Series 1.0.1 and earlier allows remote attackers to decrypt intercepted SSH traffic. The SSH service uses a fixed host key instead of generating a unique key for each virtual appliance instance. No account is required, but exploitation requires a network position from which SSH traffic can be intercepted and redirected; the documented impact is disclosure of session contents.
Summary
What happened
Hard-coded SSH host key use in Moxa MXsecurity Series 1.0.1 and earlier allows remote attackers to decrypt intercepted SSH traffic. The SSH service uses a fixed host key instead of generating a unique key for each virtual appliance instance. No account is required, but exploitation requires a network position from which SSH traffic can be intercepted and redirected; the documented impact is disclosure of session contents.
The record
- CVE
- CVE-2023-39982
- Published
- Sep 2, 2023
- Updated
- Oct 28, 2024
- Vendor
- Moxa
- Product
- MXsecurity Series
- Classifications
- CWE-321, CAPEC-191, T1557
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 2, 2023CVE publishedPublication date reported by the CVE source.
- Oct 28, 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=1.0 <=1.0.1
What conditions does exploitation require?
What is affected?
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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