Unauthenticated service interruption via blocking stream reads
Published Sep 23, 2021 · Updated Aug 3, 2024
Denial of service in VMware vCenter Server VAPI allows remote attackers to exhaust service memory through HTTPS port 443 requests. The JSON-RPC handler reads an attacker-controlled path as a blocking or slow character stream, allowing requests to retain memory. No authentication is required; network access to port 443 is sufficient to consume excessive VAPI memory and interrupt the service.
Summary
What happened
Denial of service in VMware vCenter Server VAPI allows remote attackers to exhaust service memory through HTTPS port 443 requests. The JSON-RPC handler reads an attacker-controlled path as a blocking or slow character stream, allowing requests to retain memory. No authentication is required; network access to port 443 is sufficient to consume excessive VAPI memory and interrupt the service.
The record
- CVE
- CVE-2021-22009
- Published
- Sep 23, 2021
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-668, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 23, 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
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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