Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS13M3ZwLWp3OW0tZjlwbc4AA3um

Unbounded queuing of path validation messages in cloudflare-quiche

Impact

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.

Patches

Quiche versions greater than 0.19.0 address this problem.

References

CVE-2023-6193
RFC 9000 Section 8.2

Permalink: https://github.com/advisories/GHSA-w3vp-jw9m-f9pm
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS13M3ZwLWp3OW0tZjlwbc4AA3um
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: 5 months ago
Updated: 5 months ago

CVSS Score: 5.3
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Identifiers: GHSA-w3vp-jw9m-f9pm, CVE-2023-6193
References:

• https://github.com/cloudflare/quiche/security/advisories/GHSA-w3vp-jw9m-f9pm
• https://nvd.nist.gov/vuln/detail/CVE-2023-6193
• https://github.com/cloudflare/quiche/commit/ea7ecf39ae28ab24cf1785c1674dc2e8a076f9ca
• https://datatracker.ietf.org/doc/html/rfc9000#section-8.2
• https://github.com/advisories/GHSA-w3vp-jw9m-f9pm

Repository: https://github.com/cloudflare/quiche
Blast Radius: 4.1

Affected Packages