Traffic interception and tampering via certificate misvalidation
Published Jun 8, 2021 · Updated Sep 17, 2024
Improper certificate validation in Dell EMC NetWorker Management Console before 19.4.0.2 allows attackers to intercept and alter traffic. The console client inadequately validates the application server's TLS certificate, enabling an on-path system to impersonate that server. Exploitation requires the attacker to share the client's network collision domain and a user to initiate the console connection; the attacker can read and tamper with that session's traffic.
Summary
What happened
Improper certificate validation in Dell EMC NetWorker Management Console before 19.4.0.2 allows attackers to intercept and alter traffic. The console client inadequately validates the application server's TLS certificate, enabling an on-path system to impersonate that server. Exploitation requires the attacker to share the client's network collision domain and a user to initiate the console connection; the attacker can read and tamper with that session's traffic.
The record
- CVE
- CVE-2021-21559
- Published
- Jun 8, 2021
- Updated
- Sep 17, 2024
- Vendor
- Dell Technologies
- Product
- NetWorker
- Classifications
- CWE-295, T1557
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 8, 2021CVE publishedPublication date reported by the CVE source.
- Sep 17, 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=unspecified <19.4.0.2
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.
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Technologies
Your stack
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Your stack
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