CVE-2023-6193
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.
Does this matter?
Lower severity and a low EPSS score (0.76%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- EPSS
- 0.76% probability · 53th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- cloudflare/quiche
- Source
- cna@cloudflare.com
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.