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AUSCERT External Security Bulletin Redistribution
ESB-2016.1555
Cisco IOS Software Link Layer Discovery Protocol Processing
Code Denial of Service Vulnerabilities
20 June 2016
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco IOS
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2016-1425 CVE-2016-1424
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160616-ios
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160616-ios1
Comment: This bulletin contains two (2) Cisco Systems security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco Security Advisory
Cisco IOS Software Link Layer Discovery Protocol Processing Code Denial of
Service Vulnerability
Medium
Advisory ID:
cisco-sa-20160616-ios
Published:
2016 June 17 00:00 GMT
Version 1.0:
Final
CVSS Score:
Base - 6.1
Workarounds:
No workarounds available
Cisco Bug IDs:
CSCun63132
CVE-2016-1424
CWE-119
Summary
A vulnerability in the Link Layer Discovery Protocol (LLDP) packet processing
code of Cisco IOS Software could allow an unauthenticated, adjacent attacker
to cause an affected device to crash.
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:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160616-ios
Affected Products
Vulnerable Products
Cisco IOS Software versions 15.2(1)T1.11 and 15.2(2)TST are affected.
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.
URL
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160616-ios
Revision History
Version Description Section Status Date
1.0 Initial public release. - Final 2016-June-17
Legal Disclaimer
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF
GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS
LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO
CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A standalone copy or paraphrase of the text of this document that omits the
distribution URL is an uncontrolled copy and may lack important information or
contain factual errors. The information in this document is intended for end
users of Cisco products.
- ---
Cisco Security Advisory
Cisco IOS Software Link Layer Discovery Protocol Processing Code Denial of
Service Vulnerability
Medium
Advisory ID:
cisco-sa-20160616-ios1
Published:
2016 June 17 00:00 GMT
Version 1.0:
Final
CVSS Score:
Base - 6.1
Workarounds:
No workarounds available
Cisco Bug IDs:
CSCun66735
CVE-2016-1425
CWE-119
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:
http://tools.cisco.com/security/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.
URL
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160616-ios1
Revision History
Version Description Section Status Date
1.0 Initial public release. - Final 2016-June-17
Legal Disclaimer
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF
GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS
LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO
CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A standalone copy or paraphrase of the text of this document that omits the
distribution URL is an uncontrolled copy and may lack important information or
contain factual errors. The information in this document is intended for end
users of Cisco products.
- --------------------------END INCLUDED TEXT--------------------
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