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Advisories

Traefik before 2.11.58 and 3.7.14 Race Condition in NTLM/Kerberos Round Tripper

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Severity
medium
Date
Affecting

  • traefik >= 2.11.0, < 2.11.58

  • traefik >= 3.0.0, < 3.7.14

CWE
  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVSS
6.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Description
Traefik 2.11.x before 2.11.58 and 3.x before 3.7.14 contains a race condition in NTLM and Kerberos (Negotiate) backend authentication, where the per-connection sticky round tripper slot is read and written without synchronization. Remote attackers can send concurrent HTTP/2 or HTTP/3 requests over one connection to orphan backend connections, break connection-bound authentication, or crash Traefik.

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