PT-2013-5646 · Cisco · Cisco Nx-Os

Published 2013-11-08 · Updated 2013-11-14 · CVE-2013-5566

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco NX-OS version 5.0 and earlier

Description The issue allows remote attackers to cause a denial of service, specifically supervisor CPU consumption, by exploiting Authentication Header (AH) authentication in a Virtual Router Redundancy Protocol (VRRP) frame.

Recommendations For Cisco NX-OS version 5.0 and earlier, consider disabling AH authentication in VRRP frames as a temporary workaround until a patch is available. Restrict access to VRRP to minimize the risk of exploitation.

Fix

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

CVE-2013-5566

Affected Products

Cisco Nx-Os

References · 3

• http://tools.cisco.com/security/center/viewAlert.x?alertId=31663 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2013-5566 · Security Note
• http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-5566 · Vendor Advisory