Security features bypass in Traefik - CVE-2024-39321
Published: July 5, 2024
Vulnerability identifier: #VU93811
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2024-39321
CWE-ID: CWE-254
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to improper input validation when handling HTTP/3 early data requests in QUIC 0-RTT handshakes. A remote attacker can spoof the original IP address and bypass IP allow-lists.
Affected software
Traefik
How to mitigate CVE-2024-39321
Install updates from vendor's website.
Traefik - addressed in versions 2.11.6, 3.0.4