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Cisco Bug: CSCum90886 - Remove Serial Number from CSR

Last Modified

Feb 02, 2017

Products (7)

  • Cisco Unified Communications Manager (CallManager)
  • Cisco Intercompany Media Engine
  • Cisco Unity Connection Version 9.1
  • Cisco Business Edition 5000 Version 9.1
  • Cisco Business Edition 6000 Version 9.1
  • Cisco Unified Communications Manager Version 9.1
  • Cisco Unified Communications Manager Session Management Edition

Known Affected Releases


Description (partial)

Serial Number exists in CSR (Certificate Signing Request), and it is not needed. Also, it is longer that 20 octets, which is not RFC compliant, as per RFC 5280 : . Since CA (Certificate Authority) controls the serial number of the certificates they issue, serial number should be removed from CSR.

Generate CSR for issuing CA-signed certificates.
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