Cisco Security Advisory - Cisco IOS Software contains a denial of service (DoS) vulnerability in the Wide Area Application Services (WAAS) Express feature that could allow an unauthenticated, remote attacker to cause the router to leak memory or to reload. Cisco IOS Software also contains a DoS vulnerability in the Measurement, Aggregation, and Correlation Engine (MACE) feature that could allow an unauthenticated, remote attacker to cause the router to reload. An attacker could exploit these vulnerabilities by sending transit traffic through a router configured with WAAS Express or MACE. Successful exploitation of these vulnerabilities could allow an unauthenticated, remote attacker to cause the router to leak memory or to reload. Repeated exploits could allow a sustained DoS condition. Cisco has released free software updates that address these vulnerabilities.
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