![]() ![]() IPSec connections can fail to establish.An圜onnect SSL VPN sessions fails to establish or report an invalid certificate.HTTPS sessions to manage the device display a browser warning, which indicates that the certificate has expired.API calls that use the Cisco Unified Communications Gateway Services API in Secure Mode (that use HTTPS) can fail.Calls through a gateway that MGCP or H.323 call signaling over IPSec without a pre-shared key can fail. ![]() STCAPP ports configured with encrypted signaling no longer register.Cisco IOS dspfarm resources (Conference, Media Termination Point, or Transcoding) with encrypted signaling enabled no longer register.Cisco Unified SRST with encrypted signaling enabled does not allow devices to register.Devices registered to Cisco Unified CME with encrypted signaling enabled no longer function.cert-c/source/certobj.c(535) : E_VALIDITY : validity period start later than endĪny services that rely on the Self-Signed Certificate do not function. See Cisco Field Notice FN63942 for more details.Īn attempt to generate a Self-Signed Certificate on an affected Cisco IOS or Cisco IOS XE software release after 00:00:00 UTC results in this error. LWAPP/CAPWAP connections between older Cisco IOS access points (manufactured in 2005 or earlier) and Wireless LAN Controller.Cisco Unified Communications Gateway Services API in Secure Mode (that use HTTPS).Media Gateway Control Protocol (MGCP) and H.323 call signaling over IP security (IPSec) without a pre-shared key.Skinny Client Control Protocol (SCCP) Telephony Control Application (STCAPP) ports configured with encrypted signaling.Cisco IOS dspfarm resources (Conference, Media Termination Point, or Transcoding) with encrypted signaling enabled.Cisco Unified Survivable Remote Site Telephony (SRST) with encrypted signaling enabled.Cisco Unified Communications Manager Express (CME) with encrypted signaling enabled.Session Initiation Protocol (SIP) over TLS.RESTCONF - RESTCONF connections can fail.Username/password authentication and public/private key authentication are not affected.) SSH Server - Users who use X.509 certificates to authenticate the SSH session can fail to authenticate.HTTP Server over TLS (HTTPS) - HTTPS produces an error in the browser which indicates that the certificate is expired.Services that can rely on a Self-Signed Certificate include: General Features After this date, the certificate expires and is invalid. Affected Cisco IOS and Cisco IOS XE software releases set the Self-Signed Certificate expiration date to 00:00:00 UTC. These certificates are either generated by an external third-party CA, or on the Cisco IOS or Cisco IOS XE device itself as a Self-Signed Certificate. Certificates that were generated by a Certificate Authority (CA), which includes those certificates generated by the Cisco IOS CA feature, are not impacted by this issue.Ĭertain features in Cisco IOS and Cisco IOS XE software rely on digitally signed X.509 certificates for cryptographic identity validation. This issue affects only Self-Signed Certificates that were generated by the Cisco IOS or Cisco IOS XE device and applied to a service on the device. Any service that relies on these Self-Signed Certificates to establish or terminate a secure connection does not work after the certificate expires. ![]() After that time, unfixed Cisco IOS systems are unable to generate new SSCs. Note: This document contains the contents of FN40789, along with additional context, examples, updates, and Q&As.Īt 00:00 on UTC, all Self-Signed Certificates (SSC) generated on Cisco IOS and Cisco IOS XE systems were set to expire, unless the system ran a fixed version of Cisco IOS and Cisco IOS XE when the SSC was generated. If your network is live, ensure that you understand the potential impact of any command. All of the devices used in this document started with a cleared (default) configuration. The information in this document was created from the devices in a specific lab environment. The components are the software systems affected by the expiration of the SSC.Īll Cisco IOS and Cisco IOS® XE systems that use a Self-Signed Certificate, that do not have the Cisco bug ID CSCvi48253 fix, or that did not have the Cisco bug ID CSCvi48253 fix when the SSC was generated. Prerequisites RequirementsĬisco recommends that you have knowledge of these topics: This document describes the effects and errors caused by the expiration of the Self-Signed Certificates (SSC) on Cisco software systems, and provides various workarounds. ![]()
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