Cisco Cisco IOS Software Release 12.4(23) 릴리즈 노트
425
Caveats for Cisco IOS Release 12.4
OL-7656-15 Rev. J0
Resolved Caveats—Cisco IOS Release 12.4(10c)
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CSCsi67763
The U.S. Computer Emergency Response Team (US-CERT) has reported a network evasion
technique using full-width and half-width unicode characters that affects several Cisco products.
The US-CERT advisory is available at the following link:
technique using full-width and half-width unicode characters that affects several Cisco products.
The US-CERT advisory is available at the following link:
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.
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.
Cisco response is posted at the following link:
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CSCsi84017
Symptoms: When you reload a Cisco 2600 series, the router may hang.
Conditions: This symptom is observed on a Cisco 2600 series when you attempt to run the
c2600-entservices-mz image of Cisco IOS Release 12.4(9)T4. The symptom may also occur in other
releases.
c2600-entservices-mz image of Cisco IOS Release 12.4(9)T4. The symptom may also occur in other
releases.
Workaround: There is no workaround.
Wide-Area Networking
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CSCek60025
Symptoms: A ping may be dropped in a PPP callback scenario.
Conditions: This symptom is observed on a Cisco router when Multilink PPP (MLP) and the dialer
load-threshold command are enabled.
load-threshold command are enabled.
Workaround: There is no workaround.
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CSCsc39890
Symptoms: A router that is running Cisco IOS may reload unexpectedly.
Conditions: For this symptom to occur, the router must be configured for ISDN. One possible trigger
is when using SNMP to poll information about calls while the calls are in the process of completing.
is when using SNMP to poll information about calls while the calls are in the process of completing.
Workaround: There is no workaround.
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CSCsf30493
Symptoms: When a T.37 onramp call is made, the following error message may be generated:
%CSM-3-NO_VDEV: No modems associated
Conditions: This symptom is observed on a Cisco AS5850 that runs Cisco IOS interim
Release 12.4(10.7). The symptom may not be platform-specific.
Release 12.4(10.7). The symptom may not be platform-specific.
Workaround: There is no workaround.
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CSCsh06841
Symptoms: A router may crash while establishing a PPP session.
Conditions: This symptom is observed when the ppp reliable-link interface configuration command
is enabled on an interface that is bound to a dialer profile.
is enabled on an interface that is bound to a dialer profile.
Workaround: Disable the ppp reliable-link interface configuration command, save the
configuration, and reload the router. Disabling the command without reloading the router is not
sufficient.
configuration, and reload the router. Disabling the command without reloading the router is not
sufficient.