Cisco Cisco IOS Software Release 12.4(23) Notas de publicación
414
Caveats for Cisco IOS Release 12.4
OL-7656-15 Rev. J0
Resolved Caveats—Cisco IOS Release 12.4(12)
The Cisco IOS FTP Server is an optional service that is disabled by default. Devices that are not
specifically configured to enable the Cisco IOS FTP Server service are unaffected by these
vulnerabilities.
specifically configured to enable the Cisco IOS FTP Server service are unaffected by these
vulnerabilities.
This vulnerability does not apply to the Cisco IOS FTP Client feature.
This advisory is posted at
.
TCP/IP Host-Mode Services
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CSCsd71318
Symptoms: A Cisco 2800 series router crashes whenever the connection to the URL filter server is
reset due to network congestion or a warm or cold reload.
reset due to network congestion or a warm or cold reload.
Conditions: This symptom has been observed when the router is running URL filtering with an
external Websense or N2H2 server.
external Websense or N2H2 server.
Workaround: There is no workaround for cold or warm reload. If the crash occurs due to network
congestion or WAN reset, remove the condition that cause the connection to the URL filter to flap.
congestion or WAN reset, remove the condition that cause the connection to the URL filter to flap.
Wide-Area Networking
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CSCek55209
Symptoms: When the ppp multilink endpoint mac lan-interface command or the ppp multilink
endpoint ip ip-address command is configured, the router may unexpectedly reload if the multilink
interface goes to the DOWN state, for example, when a PVC virtual circuit is unconfigured.
endpoint ip ip-address command is configured, the router may unexpectedly reload if the multilink
interface goes to the DOWN state, for example, when a PVC virtual circuit is unconfigured.
Conditions: This symptom is observed on a Cisco router that is configured for Multilink PPP.
Workaround: There is no workaround. Do not use these configuration commands in Cisco IOS
Releases 12.3, 12.4 or 12.2SB without a fix for this DDTS.
Releases 12.3, 12.4 or 12.2SB without a fix for this DDTS.
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CSCek56250
Symptoms: A router may reload while executing the show ppp multilink command.
Conditions: This symptom is observed when a multilink bundle goes down while the output is being
generated.
generated.
Workaround: There is no workaround.
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CSCir00712
Symptoms: On Cisco LAC software running Cisco IOS Release 12.3(14)T, when the fragmented
data traffic is received on the LAC over the L2TP tunnel, the IP layer reassembles the packet and
routes the packet on the wrong interface instead of consuming the L2TP data traffic locally.
data traffic is received on the LAC over the L2TP tunnel, the IP layer reassembles the packet and
routes the packet on the wrong interface instead of consuming the L2TP data traffic locally.
Conditions: This symptom has been seen when fragmented L2TP data traffic is received on the LAC
from the LNS over the L2TP tunnel.
from the LNS over the L2TP tunnel.
Workaround: There is no workaround.
•
CSCsd75854
Symptoms: A router may generate a malformed PPPoE Active Discovery Offer (PADO) packet with
two 802.1q tags. The first 802.1q tag contains the correct VLAN ID.
two 802.1q tags. The first 802.1q tag contains the correct VLAN ID.
Conditions: This symptom is observed on a Cisco router when the Service-Name field in the PPPoE
Active Discovery Initiation (PADI) packet is empty and not equal to the one that is configured on
the router.
Active Discovery Initiation (PADI) packet is empty and not equal to the one that is configured on
the router.