CyberRota Analysis
AI-GeneratedThe vulnerability affects Lemur's TLS certificate management system, allowing authenticated non-read-only users to manipulate certificate replacement requests without proper permissions. This can lead to unauthorized certificate substitutions, potentially disrupting TLS services fleet-wide and compromising security. Organizations using Lemur versions 0.5.0 to 1.9.2 should prioritize updating to version 1.9.3 to mitigate this risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
Lemur manages TLS certificate creation. From 0.5.0 until 1.9.3, certificate create, upload, and edit requests accepted replaces[] or replacements identifiers that AssociatedCertificateSchema resolved with fetch_objects without a CertificatePermission check. Assigning those objects to Certificate.replaces invoked an append listener that disabled the victim certificate notifications and marked it as replaced. The victim was then excluded from get_all_pending_reissue, and certificate_rotate could deploy the attacker certificate to endpoints serving the victim. An authenticated non-read-only user could target certificates for which the user had no ownership or role, suppress lifecycle automation, and cause fleet-wide TLS disruption or unauthorized substitution. The fix authorizes every referenced replacement certificate before mutation. This issue is fixed in version 1.9.3.