Resource exhaustion in Envoyproxy Envoy
CVE-2024-23323
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.005 (42.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Envoyproxy Envoy — versions >= 1.29.0, < 1.29.1, >= 1.28.0, < 1.28.1, >= 1.27.0, < 1.27.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/envoyproxy/envoy/security/advisories/GHSA-x278-4w4x-r7ch (Vendor Advisory)
- github.com/envoyproxy/envoy/commit/71eeee8f0f0132f39e402b0ee23b361ee2f4e645 (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2024-23323?
- CVE-2024-23323 is a medium-severity vulnerability in Envoyproxy Envoy, classified under Uncontrolled Resource Consumption. CVSS score: 4.3/10. Published 2024-02-09.
- How severe is CVE-2024-23323?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2024-23323 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.