New! Vulnerability Priority Rating (VPR)
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VPR Score: 4.4
SynopsisThe remote device is missing a vendor-supplied security patch
DescriptionAccording to its self-reported version, IOS-XE is affected by a DoS vulnerability in the ISDN subsystem due to insufficient input validation when the ISDN Q.931 messages are processed. An unauthenticated, adjacent attacker could exploit this vulnerability by sending a malicious ISDN Q.931 message to an affected device. A successful exploit could allow the attacker to cause the process to crash, resulting in a DoS condition.
Please see the included Cisco BID and Cisco Security Advisory for more information.
SolutionUpgrade to the relevant fixed version referenced in Cisco bug ID CSCvr57760