SSH traffic disclosure via reused ECDSA host key
Published Jun 29, 2020 · Updated Aug 4, 2024
Hard-coded credentials in Zyxel CloudCNM SecuManager 3.1.0 and 3.1.1 allow man-in-the-middle attackers to decrypt SSH traffic. The main host reuses the same ECDSA SSH host private key across installations, and the published key lets an interceptor impersonate the server. Exploitation requires a network position between an SSH client and the appliance; the reported consequence is SSH traffic disclosure.
Summary
What happened
Hard-coded credentials in Zyxel CloudCNM SecuManager 3.1.0 and 3.1.1 allow man-in-the-middle attackers to decrypt SSH traffic. The main host reuses the same ECDSA SSH host private key across installations, and the published key lets an interceptor impersonate the server. Exploitation requires a network position between an SSH client and the appliance; the reported consequence is SSH traffic disclosure.
The record
- CVE
- CVE-2020-15313
- Published
- Jun 29, 2020
- Updated
- Aug 4, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-798, T1557
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 29, 2020CVE publishedPublication date reported by the CVE source.
- Aug 4, 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?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
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.
Public exploit references
- Published CloudCNM ECDSA SSH host private keyfunctional · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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