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Advisories

Networknt light-4j 2.1.5 before 2.4.0 Authentication Bypass via Empty LDAP Password

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Severity
critical
Date
Affecting

  • light-4j >= 2.1.5, < 2.4.0

CWE
  • CWE-287 Improper Authentication
CVSS
9.1
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Credit
kta1kri
Description
Networknt light-4j from 2.1.5 before 2.4.0 contains an authentication bypass vulnerability in BasicAuthHandler that allows unauthenticated attackers to log in as LDAP/AD-delegated users. Attackers can send a Basic Authorization header with a known username and empty password, triggering an unauthenticated LDAP bind that is accepted as successful authentication.

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