Cisco cucm 8.6 iso how to#
Cisco cucm 8.6 iso software#

I think I have a little trouble understanding exactly what Media Bypass is supposed to do.

Cisco cucm 8.6 iso how to#

For information on how to restart the service, see the 'Restarting the Cisco CallManager Service' section of the 'Cisco Unified Communications Manager Administration Guide' at. Note: For a SIP processing change to take effect, the Cisco CallManager Service must be restarted.

Step 3: Change the SIP Interoperability Enabled parameter to False and then click Save.

Step 2: Navigate to System > Service Parameters and choose the appropriate Cisco Unified Communications Manager server and the Cisco CallManager service.

Step 1: Log in to the Cisco Unified CM Administration web interface.Use the following instructions to disable SIP processing: Cisco Unified Communication Manager versions 6.1(4), 7.1(2), and 8.0(1) introduced the ability to disable SIP processing.

Cisco cucm 8.6 iso software#

Refer to the separate Cisco Security Advisory for Cisco IOS Software for additional details.Ī workaround exists for customers who do not require SIP in their environment. The corresponding Cisco bug IDs are CSCtw84664 and CSCtj33003. Note: This vulnerability also affects Cisco IOS Software and Cisco IOS XE Software. This vulnerability is documented in Cisco bug IDs CSCtw66721 ( registered customers only) and has been assigned Common Vulnerabilities and Exposures (CVE) ID CVE-2012-3949. Note: In cases where SIP is running over TCP transport, a TCP three-way handshake is necessary to exploit this vulnerability. Only traffic destined to the device can trigger the vulnerability transit SIP traffic is not an exploit vector. This vulnerability is triggered when an affected device processes a crafted SIP message that contains a valid Session Description Protocol (SDP) message. SIP call signaling can use UDP (port 5060), TCP (port 5060), or Transport Layer Security (TLS TCP port 5061) as the underlying transport protocol.Ī vulnerability exists in the SIP implementation in Cisco Unified Communications Manager that could allow a remote attacker to cause a critical service to fail, which could interrupt voice services. Voice and video are the most popular types of sessions that SIP handles, but the protocol has the flexibility to accommodate other applications that require call setup and termination. The protocol is responsible for handling all aspects of call setup and termination. Session Initiation Protocol (SIP) is a popular signaling protocol that is used to manage voice and video calls across IP networks such as the Internet. A separate Cisco Security Advisory has been published to disclose the vulnerability that affects Cisco IOS Software and Cisco IOS XE Software at the following location:Ĭisco Unified Communications Manager is the call-processing component of the Cisco IP Telephony solution that extends enterprise telephony features and functions to packet telephony network devices, such as IP phones, media processing devices, VoIP gateways, and multimedia applications.

Individual publication links are in 'Cisco Event Response: Semi-Annual Cisco IOS Software Security Advisory Bundled Publication' at the following link:Ĭisco IOS Software and Cisco IOS XE Software are affected by the vulnerability described in this advisory. Each Cisco IOS Software Security Advisory lists the Cisco IOS Software releases that correct the vulnerability or vulnerabilities detailed in the advisory as well as the Cisco IOS Software releases that correct all Cisco IOS Software vulnerabilities in the September 2012 bundled publication.

Eight of the advisories address vulnerabilities in Cisco IOS Software, and one advisory addresses a vulnerability in Cisco Unified Communications Manager. Note: The September 26, 2012, Cisco IOS Software Security Advisory bundled publication includes nine Cisco Security Advisories. A workaround exists for customers who do not require SIP in their environment. Affected devices must be configured to process SIP messages for this vulnerability to be exploitable.Ĭisco has released software updates that address this vulnerability. Cisco Unified Communications Manager contains a vulnerability in its Session Initiation Protocol (SIP) implementation that could allow an unauthenticated, remote attacker to cause a critical service to fail, which could interrupt voice services.