Resource exhaustion in Cloudflare Boring
CVE-2023-6180
The tokio-boring library in version 4.0.0 is affected by a memory leak issue that can lead to excessive resource consumption and potential DoS by resource exhaustion. The set_ex_data function used by the library did not deallocate memory used by pre-existing data in memory each time after completing a TLS connection causing the program to consume more resources with each new connection.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.006 (47.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Cloudflare Boring — versions 4.0.0
- Cloudflare Tokio-Boring — versions 4.0.0
Weakness classification (CWE)
References
- github.com/cloudflare/boring/security/advisories/GHSA-pjrj-h4fg-6gm4 (Vendor Advisory)
Frequently asked questions
- What is CVE-2023-6180?
- CVE-2023-6180 is a medium-severity vulnerability in Cloudflare Boring, classified under Uncontrolled Resource Consumption. CVSS score: 5.3/10. Published 2023-12-05.
- How severe is CVE-2023-6180?
- Medium severity. CVSS v3 base score is 5.3 out of 10.