The ISDN implementation in Cisco IOS 15.3S allows remote attackers to cause a denial of service (device reload) via malformed Q931 SETUP messages, aka Bug ID CSCut37890.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0731
Reference (s):
- CISCO:20150514 Cisco IOS Voice Gateway Malformed ISDN Q931 Message Denial of Service Vulnerability
- URL: http://tools.cisco.com/security/center/viewAlert.x?alertId=38833
- SECTRACK:1032337
- URL: http://www.securitytracker.com/id/1032337