Specifications

1362
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(27)S1
• CSCed68575
Cisco Internetwork Operating System (IOS) Software releases trains 12.0S, 12.1E, 12.2, 12.2S,
12.3, 12.3B and 12.3T may contain a vulnerability in processing SNMP requests which, if exploited,
could cause the device to reload.
The vulnerability is only present in certain IOS releases on Cisco routers and switches. This
behavior was introduced via a code change and is resolved with CSCed68575.
This vulnerability can be remotely triggered. A successful exploitation of this vulnerability may
cause a reload of the device and could be exploited repeatedly to produce a Denial of Service (DoS).
This advisory is available at http://www.cisco.com/warp/public/707/cisco-sa-20040420-snmp.shtml
• CSCed68763
Symptoms: Engine 2 line cards may fail upon clearing BGP peers.
Conditions: This symptom is observed on a Cisco 12000 series router that is running Cisco IOS
Release 12.0(27)S.
Workaround: There is no workaround.
• CSCed72764
Symptoms: Using the images, gsr-p-mz.120-27.2.S1, TE tunnel(s) fail to switch back to the explicit
path option.
Conditions: This symptom is observed on a Cisco 12000 series router.
Workaround: Continue to work either in the explicit path or in the dynamic path without shutting
the link. Such a scenario is highly unlikely.
• CSCin66535
Symptoms: On a Cisco 7500 series router, after a RPR, RPR-plus or SSO switchover, the router may
display the following messages:
%RSP-3-RESTART: cbus complex
This will be followed by the reload of all line cards in the router.
It will be followed by the messages:
HA-2-NO_QUIESCE: Slot <slot#> did not quiesce, it will be disabled and then reloaded.
Conditions: This problem happens on a Cisco 7500 series router that is running Cisco IOS
Release 12.0S and occurs after an RPR, RPR-plus, or SSO switchover. Similar symptoms can be
observed if service single-slot-reload-enable is not configured on the router. But in that case, the
cbus complex message will follow the HA-2-NO_QUIESCE error message(s).
Workaround: There is no workaround.
• CSCuk48156
Symptoms: Failover boot commands from slot to disk results in endless loop. If the router does not
find the image in slot0, it will not be able to properly switch to the next image in disk1.
Conditions: This symptom occurs when slot0 holds linear flash and disk1 holds ATA disk.
Workaround: While being in a loop in the console connection, press control plus return, type and
send break till the loop stops.