Vulnerability · Published Dec 5, 2023 · Assigned by cloudflare

CVE-2023-6180Resource exhaustion via memory leak in tokio-boring

Medium 5.3

In plain English

A medium-severity uncontrolled resource consumption in tokio-boring from Cloudflare. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.6%top 50.2% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Cloudflare	tokio-boring	4.0.0 – through 4.1.0

Weakness: CWE-400, CWE-404 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References

https://github.com/cloudflare/boring/security/advisories/GHSA-pjrj-h4fg-6gm4