Vulnerability Description
quiche v. 0.15.0 through 0.19.0 was discovered to be vulnerable to unbounded queuing of path validation messages, which could lead to excessive resource consumption. QUIC path validation (RFC 9000 Section 8.2) requires that the recipient of a PATH_CHALLENGE frame responds by sending a PATH_RESPONSE. An unauthenticated remote attacker can exploit the vulnerability by sending PATH_CHALLENGE frames and manipulating the connection (e.g. by restricting the peer's congestion window size) so that PATH_RESPONSE frames can only be sent at the slower rate than they are received; leading to storage of path validation data in an unbounded queue. Quiche versions greater than 0.19.0 address this problem.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cloudflare | Quiche | >= 0.15.0, <= 0.19.0 |
Related Weaknesses (CWE)
References
- https://datatracker.ietf.org/doc/html/rfc9000#section-8.2Technical Description
- https://github.com/cloudflare/quiche/security/advisories/GHSA-w3vp-jw9m-f9pmVendor Advisory
- https://datatracker.ietf.org/doc/html/rfc9000#section-8.2Technical Description
- https://github.com/cloudflare/quiche/security/advisories/GHSA-w3vp-jw9m-f9pmVendor Advisory
FAQ
What is CVE-2023-6193?
CVE-2023-6193 is a vulnerability with a CVSS score of 5.3 (MEDIUM). quiche v. 0.15.0 through 0.19.0 was discovered to be vulnerable to unbounded queuing of path validation messages, which could lead to excessive resource consumption. QUIC path validation (RFC 9000 Sec...
How severe is CVE-2023-6193?
CVE-2023-6193 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-6193?
Check the references section above for vendor advisories and patch information. Affected products include: Cloudflare Quiche.