CyberRota Analysis
AI-GeneratedLemur's TLS certificate management system is vulnerable in versions prior to 1.9.3, allowing authenticated non-read-only users to create a sub-CA linked to an internal root authority without proper permissions. This flaw enables unauthorized issuance of trusted certificates, potentially compromising the integrity of the certificate management process. Organizations using Lemur for TLS management should prioritize upgrading 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. Prior to 1.9.3, POST /api/1/authorities with type=subca did not require AuthorityPermission on the parent authority when ADMIN_ONLY_AUTHORITY_CREATION was false. AssociatedAuthoritySchema resolved the caller-supplied parent and passed it through authority creation to cryptography-issuer, which used the parent authority_certificate.private_key to sign a new intermediate. Any authenticated non-read-only user in that supported configuration could chain a sub-CA to an internal root for which the user held no role. The resulting intermediate could issue trusted certificates and its private key could be used outside Lemur, bypassing normal issuance controls. The fix checks AuthorityPermission on every supplied parent before invoking the issuer. This issue is fixed in version 1.9.3.