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Advisories

Traefik before 2.11.58 and 3.7.14 Authentication Bypass via Negotiate Connection Pool

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Severity
high
Date
Affecting

  • traefik >= 2.11.0, < 2.11.58

  • traefik >= 3.0.0, < 3.7.14

CWE
  • CWE-287 Improper Authentication
CVSS
7.0
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
Credit
lyhtheori
Description
Traefik 2.11.0 before 2.11.58 and 3.0.0 before 3.7.14 contains an authentication bypass because a first request preauthenticated with an Authorization: Negotiate token authenticates a socket in the globally shared backend connection pool, which is never isolated. Unauthenticated attackers on separate frontend connections can be assigned that NTLM/Kerberos-bound socket and perform reads or writes with the victim's identity.

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