PT-2015-2232 · Cisco · Cisco Nx-Os+1

Published 2015-06-19 · Updated 2016-12-28 · CVE-2015-4197

Positive Technologies (AI Summary)

CVSS v2.0

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Cisco NX-OS version 5.2(5)

Description The issue is caused by insufficient input validation in the Link Layer Discovery Protocol (LLDP) code, allowing an attacker to send a malformed LLDP packet on the local network and cause a denial of service (device crash). To exploit this, an attacker must be on the same broadcast or collision domain as the targeted device.

Recommendations For Cisco NX-OS version 5.2(5), update to a newer version that includes the fix for this issue. As a temporary workaround, consider disabling LLDP packet processing on interfaces where it is not necessary until a patch is available. Restrict access to the device to minimize the risk of exploitation.

Fix

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2015-11578

CVE-2015-4197

Affected Products

Cisco Nx-Os

Cisco Nexus

References · 6

• http://tools.cisco.com/security/center/viewAlert.x?alertId=39421 · Vendor Advisory
• https://bdu.fstec.ru/vul/2015-11578 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2015-4197 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/Cisco-SA-20150619-CVE-2015-4197 · Note
• http://securityfocus.com/bid/75324 · Note
• http://securitytracker.com/id/1032675 · Note