CVE-2023-47124
December 04, 2023
Traefik is an open source HTTP reverse proxy and load balancer. When Traefik is configured to use the "HTTPChallenge" to generate and renew the Let's Encrypt TLS certificates, the delay authorized to solve the challenge (50 seconds) can be exploited by attackers to achieve a "slowloris attack". This vulnerability has been patch in version 2.10.6 and 3.0.0-beta5. Users are advised to upgrade. Users unable to upgrade should replace the "HTTPChallenge" with the "TLSChallenge" or the "DNSChallenge".
Affected Packages
github.com/traefik/traefik/v3 (GO):
Affected version(s) >=v3.0.0-beta2.0.20230203142405-044dc6a221a1 <v3.0.0-beta5Fix Suggestion:
Update to version v3.0.0-beta5github.com/traefik/traefik/v2 (GO):
Affected version(s) >=v2.0.0-rc1 <v2.10.6Fix Suggestion:
Update to version v2.10.6Related Resources (10)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
EPSS
Base Score:
0.23
