The H. There are no workarounds to mitigate these vulnerabilities other than disabling H. Two separate Cisco Security Advisories have been published to disclose the vulnerabilities that affect the Cisco Unified Communications Manager at the following locations:. Conditions When outgoing call is done using queuing-dn.
Symptom Router crashes or spurious memory access can be seen. Symptom A Cisco UC crashes with memory corruption and frozen console access. Workaround Power-cycle the router. This symptom will not occur after the image has been upgraded.
Symptom Router crash when configured as mobile router with IP phone attached. Conditions SRST router running This is the first image with sccp version 17 support for SRST. Workaround Download the IP phone firmware to a version that does not use sccp version Conditions If there are more than 42 buttons configured on the phone, some line buttons may be missing after the phone fails over to the SRST. Workaround Downgrade the phoneload to sccp v16 or lower. Symptom The IOS messages could be observed.
Conditions The symptom could happen under normal condition. Workaround Remove the split tunnel configuration. Symptom FXO ports can get stuck in offhook state. Conditions The symptom is observed when FXO ports are members of a huntgroup where the first member port is disconnected or down.
The trunkgroup has max-retry configured and rapid calls are connected and disconnected using the trunkgroup. Workaround Unconfigure max-retry. Under each port, configure timeouts power-denial 0" so that disconnected ports are moved to offhook state and will not be hunted. The output is different compared to the value received from the same configuration on and Workaround Use reset instead of restart. Symptom 69xx phones display toast message "From : XXXX" when it receives an incoming call for 6 seconds and then it displays the caller ID of the person.
Conditions Observed for 8. Workaround Not seen for phone firmware 8. Symptom The Update method would have two call-info headers in certain call scenarios.
This would cause the caller ID information to be "unknown" when the two headers were present. Conditions Under certain call scenarios, the Update method would have two call-info headers, one for normal remotecc info and one for security status. Workaround There is no workaround but it is not service effecting. Caller ID would be unavailable in certain instances. Symptom CME group pickup or pickup features do not work properly. Symptom A monitor phone can change the monitored dn SNR number via myphoneapp application.
Conditions Using myphoneapp on a monitoring phone can change the SNR target of a monitored dn. Symptom AnyConnect Client version 2. AnyConnect 2. This only pertains to the 2. Workaround Any of the following workarounds may be used:.
The TCP sessions could be a telnet or H. Symptom SPAG2 phone would not register. Symptom No line or speed dial buttons are shown on the fallback skinny phone. Workaround Attach side cars to the phone. Workaround Issue clear crypto isa. Symptom When using the copy ftp command to update IOS software issued on a router, it takes approximately 80 seconds before the file transfer begins.
Conditions This is seen on a or series router, but is not seen on routers in other series, such as or Conditions This symptom is observed if a WAN outage happens when more than 40 calls are in progress. Some random calls are then shown to be active when using the command show call active voice compact with Cisco IOS Release Symptom NULL is accepted as a name for class-maps and policy-maps.
No error message is displayed. Conditions Create a class-map or policy-map with "" or " " or any other similar combination as the name. Symptom Failed to get media source address for a stream in a DO call. Conditions Failed to get media source address for a stream in a DO call with rsvp. Symptom When using mgcp dtmf-relay type nte-gw, a sniffer trace will reveal that digits are sent both in-band within the audio stream and out-of-band dtmf-relay.
Because of this, double digits can be seen in Unity and MeetingPlace. Workaround Use mgcp dtmf-relay type out-of-band.
Symptom If a certificate map is changed or added to the trustpoint, the pub key cache for the peers is not cleared. This makes it possible for a client which was connected in the past to reconnect again even if its certificate was banned by the certificate map. Conditions Only seen with IE8. Workaround IE6 can be used as a workaround. Some pages on server A automatically does a silent login to server B and gets the information required to generate reports.
When using IE8 this login information does not gets properly propagated to the backend server B which results in redirection request to the login page from server B. Symptom Tunnel sources get mixed up when tunnel interfaces are configured with serial subinterfaces as sources and the router is reloaded.
Conditions The symptom occurs only after a reload or when a saved configuration is applied to the running configuration. Conditions Phone A does a call blast by calling pilot number xxxxx. All the phones start ringing till time out 60 seconds then call lands on the final phone B. Phone B answers the call and gets connected, then it checks for called number at Phone A.
The final phone's number should be displayed. But the pilot number is displayed. Conditions The issue occurs when ICMP path jitter operation is configured on the router with invalid source address.
Platform is supB with Workaround Configure the SLA operation with the right source address. Symptom Application set window scale factor does not get used by the accepted connection, instead the scale factor set by the global command ip tcp window XXXX is used. Conditions ip tcp window XXXX configured to a higher than value.
Connection has window scale enabled on both sides. Conditions The router runs into low-mem condition due to mem-fragmentation in certain voip-perf testing. It has a known work-around and is not a problem as such unless similar level of bursty traffic with the peculiar size of request is generated as used in testing.
Also, there is no support for iPhone and iPod safari browsers. Workaround Page is displayed but quality is poor. Symptom The called name is not displayed on the caller sccp phone when the call is forwarded to non-sccp endpoint ie. The called number is displayed correctly. Conditions Interworking with PGW. Symptom A router crashes with an Address Error load or instruction fetch exception.
Conditions This symptom is observed if an authenticated user repeatedly configures mgcp block-newcall and no mgcp block-newcall while active calls are being made.
Workaround Wait for all active calls to terminate before configuring no mgcp block-newcall. Standby router also crashes if the Active interface is brought up. Symptom Certain crafted packets may cause memory leak in the device in very rare circumstances. Workaround Disable SIP if it is not needed.
Cisco has released free software updates that address these vulnerabilities. There are no workarounds for devices that must run SIP; however, mitigations are available to limit exposure to the vulnerabilities. Each advisory lists the releases that correct the vulnerability or vulnerabilities detailed in the advisory.
Two separate Cisco Security Advisories have been published to disclose the vulnerabilities that affect the Cisco Unified Communications Manager at the following locations:. The H. There are no workarounds to mitigate these vulnerabilities other than disabling H.
Each advisory lists the. The table at the. The first vulnerability is in the translation of Session Initiation Protocol SIP packets, the second vulnerability in the translation of H.
Repeated attempts to exploit this vulnerability could result in a sustained denial of service DoS condition. Cisco has released free software updates that address this vulnerability. Conditions The symptom is observed when the wireless client is running "ADUv2. Workaround Upgrade the wireless client ADU to version 3.
Workarounds that mitigate this vulnerability are available. Symptom Not able to use "scheme" sub cli under "sip-ua" registrar CLI, if any other option is selected first. Workaround Use the "scheme" option first, then follow it up with other options, after "registrar " under sip-ua sub-mode.
A workaround that mitigates this vulnerability is available. Cisco IOS Software is affected by a denial of service vulnerability that may allow a remote unauthenticated attacker to cause an affected device to reload or hang. In addition to specific, crafted TCP options, the device must have a special configuration to be affected by this vulnerability.
Remote code execution may also be possible. For devices that must run SIP there are no workarounds; however, mitigations are available to limit exposure of the vulnerabilities. Symptom GW is streaming with the wrong codec g and IP phone is expecting g Symptom RIP is not sending or processing updates via the interface. Conditions The issue occurs after the following commands are issued in sequence:.
Symptom "CCE match" string is not found in the debug messages. Conditions This error is seen in Cisco image version Conditions The symptom is observed when the DSU bandwidth is changed to a value other than the default of It mostly occurs with values below Workaround Leave the DSU bandwidth at the default of Symptom The ip rip advertise command might be lost from the interface.
Conditions This symptom occurs in any of the following three cases:. Workaround Configure the timers basic command under the address-family under rip. Symptom Configuring "fax protocol t38" under "dial-peer" displays the entry twice in sh run. Conditions This issue is seen in Workaround Do not use gatekeeper. Symptom The Fast Ethernet driver code may cause several errors.
The observed symptoms of this issue include:. In addition, the following conditions exist:. For example:. No other model of Cisco routers or switches are known to be affected by this issue. The symptoms can be triggered with specific TCP sequences. Symptom Router reloads with a bus error and no tracebacks.
Conditions Unknown. Symptom When RIP is configured between Cisco and third party devices, the RIP process ignores delay and keeps sending messages out even though the ip rip initial-delay xx command is configured.
Conditions When using ip rip initial-delay xx as a way to achieve interoperability between third party product and Cisco devices while using RIP authentication. Workaround Remove authentication. Conditions The symptom is observed if the SNR number change menu is selected from an extension mobility phone.
The router crashes after submitting the change. Workaround Configure an SNR under the user-profile or logout-profile with which the extension mobility phone is provisioned. Conditions Issue is observed on Cisco platform running Workaround Use shorter password. Conditions When a call is placed between non-secure to secure leg, CUBE fails to invoke secure transcoder configured on the box. Workaround Modify the diverting name associated with the redirecting device so that it does not contain a comma.
Specifically IOS Workaround Use an unaffected platform. Keep the phone on the hook. Press "New Call" softkey, nothing happens. The fix for CSCsv was supposed to be integrated in these releases but this integration with the above IOS did not take place. Symptom A Cisco or a IP Phone registered to a Cisco Unified Callmanager Express system may lose its "system message" default is "Your current options" intermittently for a period of 5 seconds to 45 seconds.
Conditions The conditions are:. Problem phone A is programmed with a monitor line appearance on phone. Source phone B of monitored line starts a call. Phone A monitor button correctly displays that phone B is on call. Source phone B ends call. Phone A loses system message for a period of 5 seconds to 45 seconds. Workaround The problem only affects phone models and at this time.
Conditions In the following scenario the calling IP phone A displays the wrong called name forward to at the alerting stage. The Phone A displays its own name as the Forward to name. After the call is connected, the correct name C is shown. Symptom Consult transfer fails across SIP trunk.
Conditions The triggered invite does not include a replaces header. Workaround Disable refer on the SIP trunk. There are no workarounds for this vulnerability other than disabling the Object Groups for ACLs feature. Cisco IOS Software configured with Authentication Proxy for HTTP S , Web Authentication or the consent feature, contains a vulnerability that may allow an unauthenticated session to bypass the authentication proxy server or bypass the consent webpage.
There are no workarounds to mitigate the vulnerability apart from disabling H. Exploitation of the vulnerability could result in a reload of the affected device. Workarounds that mitigate this vulnerability are available within the workarounds section of the posted advisory.
Symptom Fax call initiated as T. Symptom Multicast stops flowing through the dot1q enabled interfaces on the router. This is also seen for non dot1q interfaces with Conditions A series router is running When you enable ingress netflow on the receive interface of the multicast traffic, the interface will stop processing multicast traffic. This is also seen in Remove ingress netfow from the multicast ingress interface.
Switch IOS to a different Symptom The call threshold command behaves differently when GK is used. It allows more calls then expected. Symptom Agent goes reserve, caller hears ringback, and does not get connected to agent.
Conditions CVP 4. After the initial call is established with G codec and fax tone is detected, upspeed to G codec does not work and the fax call fails. Symptom VXML gateway might stop providing audio prompts to caller.
This causes TTS generates a parse error. Conditions Call fails when G codec is used. The IOS version where this is seen is The issue is not seen with IOS With IOS No calls are failed. Symptom Some unsupported features might be available for configuration on the and platforms. See the product datasheets for a list of supported features on the and platforms. Symptom Unable to configure inspect for any protocol in self zone.
Conditions When class-map is configured with match protocol and tries to attach to self zone pair. Workaround This issue is not seen when match access-group is used. The issue is sporadic and does not occur all the time. Symptom The FE wan might stop transmission. Workaround Reset the interface by issuing clear int Further Problem Description : The transmission tx stops since the tx buffer descriptor bd ring is full.
When it occurs, show controller Conditions BGP configuration. Symptom Display-logout messages stay on the screen of the phone after removing it from the configuration of the hunt group ephone-hunt. Conditions The issue occurs when the display-logout messages are removed from the configuration when no phone is logged into the hunt-group.
Workaround Restart the router after the configuration change. Further Problem Description : Even though the messages stay on the screen, the hunt group works fine and phones are able to log in and log out of the hunt-group.
Also, this issue is not seen when the display-logout message is removed when the phones are still logged into the hunt-group. If that is not possible, downgrade to any IOS before For example, Symptom A router configured for VOIP might crash due to memory corruption when performing a consultation transfer. Have them them online and have no need at the moment to purchase new devices or the funding.
Can you please direct me in the right direction? I have looked on Cisco download page and there is nothing there anymore. Thanks for any help that can be supplied. Hi Edwin, You need an account with a valid support contract. These reasons may be due to market demands, technology innovation and development driving changes in the product, or the products simply mature over time and are replaced by functionally richer technology. While this is an established part of the overall product life cycle, Cisco Systems recognizes that end-of-life milestones often prompt companies to an support you right through the end-of-life transition period.
Below are guidelines that should be followed to ensure that you receive effective support for the affected products within your network: For hardware or software that is not covered under a service contract, customers may add the product s to a current contract or purchase a new contract until 12 months after the end-of-sale date.
Service contracts that have not been renewed or have lapsed after 12 months of end-of-sale date are not re-newable. Symptom Calling party information is shown wrongly for a forwarded call when using 'calling-number local'.
Conditions On CME 4. When 'calling-number local' is configured, the call setup to the forwarding target should just contain the forwarder's name and number as calling party information.
Symptom Spurious memory access seen on startup or after creating cnf files. Conditions CME secure phone config. Symptom Creator of conference gets a fast busy when trying to complete conference. Other parties of potential conferenced are connected to parties of separate conference.
Conditions User must have CME 4. Two users must try to complete separate conferences at same time. Symptom Anyone can have unprivileged Telnet access to a system without being authenticated, when a reverse SSH session is established with valid authentication credentials. This only affects reverse SSH sessions where a connection is made with the ssh -l userid : number ip - address command.
Workaround Configure reverse SSH with the ip ssh port portno rotary rotarygroup command. Symptom IP phone trying to create an ad-hoc conference is dropped when pressing "Conf" softkey the second time. Conditions Must be using hardware conferencing in CME 4. The IP phone must receive a call first on on overlaid button.
This initial call must come in on any DN besides the first DN configured in the "button" command in ephone config. Workaround Disable hardware encryption on the router with the command: no crypto engine accelerator. Conditions There is no workaround. Workaround Use the CLI to configure additional lines. Conditions This symptom is observed on a Cisco router that is "fresh out of the box" and affects the following routers: Cisco series Cisco series Cisco series Cisco series Cisco series Cisco series Cisco series.
Conditions When a sharedline member calls the sharedline DN phone number, the other sharedline member which also overlay DNs on the same line will get port hung in various state.
Workaround Reload. Symptom After the call transfer on alert, audio is not heard on ip phone. Further Problem Description: During the call transfer, service provider network send slightly different media capabilities on the OK with SDP; capabilities are agreed from CME; but this new capabilities seem to make the issue;.
Symptom Malformed SSL packets may cause a router to leak multiple memory blocks. Conditions This symptom is observed on a Cisco router that has the ip http secure server command enabled. Workaround Disable the ip http secure server command. Symptom The U. By encoding attacks using a full-width or half-width unicode character set, an attacker can exploit this vulnerability to evade detection by an Intrusion Prevention System IPS or firewall.
This may allow the attacker to covertly scan and attack systems normally protected by an IPS or firewall. Workaround This is an enhancement. Symptom Incoming call on a SIP trunk with G as preferred codec sets up but there is no ringback and dtmf is not working. Workaround Do not use voice-call codec. Conditions Router running CME 4. Symptom Caller ID is received with extra characters. Conditions Whatever name is sent by the source will be received by the destination.
Symptom When a c router is loaded with the centservices-mz. T4 image, the router hangs during reload. Conditions The problem occurs when a c router is loaded with centservices-mz. Symptom When a reverse SSH session is established with valid authentication credentials, anyone can obtain unprivileged Telnet access to a system without being authenticated.
This situation affects only reverse SSH sessions when a connection is made with the ssh -l userid : number ip-address command. Workaround Configure reverse SSH by entering the ip ssh port portnum rotary group command. Symptom After a call is transferred on alert, audio is not heard on IP phones. Further Problem Description: During the call transfer, the service provider network sends slightly different media capabilities on the OK with SDP; these capabilities are agreed upon from CME; but this new capabilities seems to cause this problem.
Symptom The W button is not lit on when the watched phone goes off hook. Conditions This problem only occurs after the CME reboots and the watched phone has speed-dial button configured. Workaround Reset the watched phone. Restart the watched phone.
Remove the speed-dial button. A specific Q. Overall performance of the device can deteriorate to some extent. Workaround The only way to rectify this situation is to reboot the device. Further Problem Description Upgrading the software is suggested. Symptom The cbs did not support qnx. Conditions The cbs was modified to support qnx by the addition of qnx object contexts. Workaround In order to use qnx with the cbs, modify the makefile to specify qnx.
Symptom Cflow instrumentation requires definitions of constructors. Conditions This patching happens only when the cflow build is done using dpe-cli tool. Further Problem Description Extra time is spend by the dpe-cli tool to checkout-patch and again undo-checkout while exiting. Also since this checkout-patches happens during every build, modified files will be compiled and linked every time. This extra processing can be reduced by checking-in the changes to the branches.
Observed in Phones on CME2 can subscribe and show up in show mwi relay clients command however no notify is sent in response to messaging from Unity. The GW main will core dump:. Conditions This is a performance tes.
A vulnerability has been discovered in a third party cryptographic library which is used by a number of Cisco products. Due to the nature of the vulnerability it may be possible, in some cases, to trigger this vulnerability without a valid certificate or valid application-layer credentials such as a valid username or password. Successful repeated exploitation of any of these vulnerabilities may lead to a sustained Denial-of-Service DoS ; however, vulnerabilities are not known to compromise either the confidentiality or integrity of the data or the device.
These vulnerabilities are not believed to allow an attacker will not be able to decrypt any previously encrypted information. Cisco has made free software available to address this vulnerability for affected customers. There are no workarounds available to mitigate the effects of the vulnerability. Note Another related advisory is posted together with this Advisory.
It also describes vulnerabilities related to cryptography that affect Cisco IOS. Workaround Disable "authenticate register" under "voice register global". Further Problem Description: In registrar Functionality, CME challenges an inbound Register request with response If "authenticate register" is configured under "voice register global". GW Stack is not processing this Request and is dropping it. Please consult this link for more information:.
Workaround Unless removing the dialplan-pattern, no work around present. Symptom The contact header ip address is incorrect in the message sent by sip srst in redirect mode. As the result basic call fails in this mode. B2b mode is working okay. Workaround Use b2b mode. Conditions When session-target is configured but outbound-proxy is not configured.
Workaround None. Symptom A router may crash with CPU vector Conditions IOS running qos and cce.
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