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Cisco Nexus 7000 and 7700 Series Switches Overlay Transport Virtualization Buffer Overflow Vulnerability

Information

Severity

Severity

Critical

Family

Family

CISCO

CVSSv2 Base

CVSSv2 Base

10.0

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Solution Type

Solution Type

Vendor Patch

Created

Created

5 years ago

Modified

Modified

3 years ago

Summary

A vulnerability in the Overlay Transport Virtualization (OTV) generic routing encapsulation (GRE) implementation of the Cisco Nexus 7000 and 7700 Series Switches could allow an unauthenticated, adjacent attacker to cause a reload of the affected system or to remotely execute code.

Insight

Insight

The vulnerability is due to incomplete input validation performed on the size of OTV packet header parameters, which can result in a buffer overflow. An attacker could exploit this vulnerability by sending a crafted OTV UDP packet to the OTV interface on an affected device.

Detection Method

Detection Method

Checks if a vulnerable version is present on the target host.

Solution

Solution

Upgrade to 7.2(2)D1(1) or later.

Common Vulnerabilities and Exposures (CVE)