Communication disclosure via weak SSH cryptography
Published May 26, 2021 · Updated Aug 5, 2024
Weak SSH cryptography in Versa Networks VOS allows man-in-the-middle attackers to read confidential network communications. The SSH service accepts unapproved encryption protocols or cipher suites, leaving sessions without adequate cryptographic protection. Exploitation requires an attacker positioned at a network endpoint to intercept an unsuspecting user's session; the published impact is disclosure only.
Summary
What happened
Weak SSH cryptography in Versa Networks VOS allows man-in-the-middle attackers to read confidential network communications. The SSH service accepts unapproved encryption protocols or cipher suites, leaving sessions without adequate cryptographic protection. Exploitation requires an attacker positioned at a network endpoint to intercept an unsuspecting user's session; the published impact is disclosure only.
The record
- CVE
- CVE-2018-16499
- Published
- May 26, 2021
- Updated
- Aug 5, 2024
- Vendor
- Versa Networks
- Product
- Versa Operating System (VOS)
- Classifications
- CWE-326, T1557
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 26, 2021CVE publishedPublication date reported by the CVE source.
- Aug 5, 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=Fixed Versions: 16.1R2S11, 20.2.2, 21.1.1, 21.2.1
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.
Public exploit references
No public exploit references are available in this record.
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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