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Cisco Bug: CSCun86062 - TS:SS:XE3.13: CUBE phone-proxy does not follow PKCS1 form CTL signature

Last Modified

Jul 16, 2020

Products (25)

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

15.4(3)S

Description (partial)

Newer phone models like 78xx (7861, 7821 etc) are not authenticating the CTL file signed by CUBE in phone-proxy mode.

The signature in CTL signing header does not follow PKCS1 format and the verification fails on phone side. 

This also affects 88XX series phones as well.

Symptom:
When configuring CUBE Lineside (phone-proxy mode).

Conditions:
Using 78XX or 88XX series phones with CUBE Lineside (phone-proxy mode).
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Bug Details Include

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