Cisco IOS Software Link Layer Discovery Protocol Processing Code Denial of Service Vulnerability

Available Languages

Updated:June 17, 2016
Document ID:1466197746340325

Bias-Free Language

The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.

Cisco Security Advisory

Cisco IOS Software Link Layer Discovery Protocol Processing Code Denial of Service Vulnerability

Medium
Advisory ID:
cisco-sa-20160616-ios1
First Published:
2016 June 17 00:00 GMT
Last Updated: 
2016 July 14 22:18 GMT
Version 1.1:
Final
Workarounds:
No workarounds available
Cisco Bug IDs:
CSCun66735
CVE-2016-1425
CVSS Score:
Base 6.1, Temporal 5.0Click Icon to Copy Verbose Score
AV:A/AC:L/Au:N/C:N/I:N/A:C/E:F/RL:OF/RC:C
CVE-2016-1425

Summary

  • A vulnerability in the Link Layer Discovery Protocol (LLDP) packet processing code of Cisco IOS could allow an unauthenticated, adjacent attacker to cause the crash of an affected device.

    The vulnerability is due to improper handling of crafted LLDP packets. An attacker could exploit this vulnerability by sending a specially crafted LLDP packet. An exploit could allow the attacker to cause a Denial of Service (DoS) condition on an affected platform. 

    Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

    This advisory is available at the following link: https://sec.cloudapps.cisco.comsecurity/center/content/CiscoSecurityAdvisory/cisco-sa-20160616-ios1

Affected Products

  • Vulnerable Products

    The following Cisco IOS Software versions are affected:
    • 15.0(2)SG5
    • 15.1(2)SG3
    • 15.2(1)E
    • 15.3(3)S
    • 15.4(1.13)S

    Products Confirmed Not Vulnerable

    No other Cisco products are currently known to be affected by this vulnerability.

Workarounds

  • No workarounds are available for this vulnerability but administrators may choose to disable LLDP packet processing.  

Fixed Software

  • Cisco provides information about fixed software in Cisco bugs, which are accessible through the Cisco Bug Search Tool.

    When considering software upgrades, customers are advised to consult the Cisco Security Advisories and Responses archive at http://www.cisco.com/go/psirt and review subsequent advisories to determine exposure and a complete upgrade solution.

    In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.

Exploitation and Public Announcements

  • The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

Cisco Security Vulnerability Policy

  • To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.

Subscribe to Cisco Security Notifications

URL

Revision History

  • Version Description Section Status Date
    1.1 Updated the link to the Cisco Bug Search Tool. Fixed Software Final 2016-July-14
    1.0 Initial public release. — Final 2016-June-17
    Show Less

Cisco Security Vulnerability Policy

  • To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.

Subscribe to Cisco Security Notifications