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.

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)

EPSS: 0.006 (46.1th percentile) — read the EPSS interpretation.

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.

Affected products

Cloudflare Boring — versions 4.0.0
Cloudflare Tokio-boring — versions 4.0.0

Weakness classification (CWE)

References

cna@cloudflare.com (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.