Unauthenticated service interruption via WebSocket requests
Published Sep 14, 2021 · Updated Aug 3, 2024
Denial of service in F5 BIG-IP Advanced WAF and ASM 12.1.x through 16.0.x allows remote attackers to terminate the bd process. The failure occurs in the WebSocket request-processing path, but F5 has not published the request form or input-validation operation that fails. Exploitation requires a virtual server with a WebSocket profile; the disclosed consequence is process termination, not data access or code execution.
Summary
What happened
Denial of service in F5 BIG-IP Advanced WAF and ASM 12.1.x through 16.0.x allows remote attackers to terminate the bd process. The failure occurs in the WebSocket request-processing path, but F5 has not published the request form or input-validation operation that fails. Exploitation requires a virtual server with a WebSocket profile; the disclosed consequence is process termination, not data access or code execution.
The record
- CVE
- CVE-2021-23030
- Published
- Sep 14, 2021
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-20, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 14, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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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.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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