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Cisco Bug: CSCum14512 - CRL download for SUBCA resulting in signature verification failure

Last Modified

Oct 14, 2019

Products (25)

  • Cisco IOS
  • Cisco ASR 901-6CZ-FS-D Router
  • Cisco ASR 901-6CZ-F-D Router
  • Cisco ASR 901-4C-FT-D Router
  • Cisco ASR 901S-4SG-F-D Router
  • Cisco ME 3600X-24TS-M Switch
  • Cisco ASR 901S-2SG-F-D Router
  • Cisco ASR 901S-2SG-F-AH Router
  • Cisco ASR 901-6CZ-F-A Router
  • Cisco ASR 901-6CZ-FT-A Router
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Known Affected Releases

15.4(3)S

Description (partial)

Symptom:
The Router downloads the CRL file, however it will fail to make use of the CRL file with the following error:

CRYPTO_PKI: CRL verify has failed
%PKI-4-CRLINSERTFAIL: Trustpoint "SubCA-Trustpoint" failed to verify CRL signature (error 1872:E_PATH_NOT_FOUND : valid cert path not found (reason: %n0))

Conditions:
Cisco IOS acting as PKI Client, where we have a full chain : Root -> Sub-CA -> ID certificate by Sub-CA installed or a valid certificate chain; Sub-CA -> ID certificate by Sub-CA installed.

Here we are verifying the peer certificate issued by the Sub-CA by means of CRL
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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  • Known Fixed Releases
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