CVE-2024-23323: Excessive CPU usage when URI template matcher is configured using regex in Envoy
First published: Fri Feb 09 2024(Updated: )
Envoy is a high-performance edge/middle/service proxy. The regex expression is compiled for every request and can result in high CPU usage and increased request latency when multiple routes are configured with such matchers. This issue has been addressed in released 1.29.1, 1.28.1, 1.27.3, and 1.26.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Envoy Proxy | >=1.26.0<1.26.7 | |
| Envoy Proxy | >=1.27.0<1.27.3 | |
| Envoy Proxy | >=1.28.0<1.28.1 | |
| Envoy Proxy | >=1.29.0<1.29.1 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2024-23323?
CVE-2024-23323 is considered a moderate severity vulnerability due to its impact on CPU usage and request latency.
How do I fix CVE-2024-23323?
To fix CVE-2024-23323, upgrade Envoy Proxy to version 1.29.1, 1.28.1, 1.27.4, or later.
Which versions of Envoy are affected by CVE-2024-23323?
CVE-2024-23323 affects Envoy versions between 1.26.0 and 1.26.7, 1.27.0 and 1.27.3, 1.28.0 and 1.28.1, and 1.29.0 and 1.29.1.
What are the implications of CVE-2024-23323?
The implications of CVE-2024-23323 include potential increased CPU usage and latency for requests depending on regex matchers in configured routes.
Is there a workaround for CVE-2024-23323?
Currently, the best approach for CVE-2024-23323 is to apply the recommended updates as there are no specific workarounds mentioned.
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