Cisco Security Advisory
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AV:N/AC:L/Au:S/C:N/I:N/A:C/E:F/RL:OF/RC:C
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A vulnerability in the SNMP subsystem of Cisco IOS XE software could allow an authenticated, remote attacker to create a denial of service (DoS) condition.
The vulnerability is due to an attempt to double free a region of memory when processing a series of SNMP read requests that contains certain criteria for a specific object ID (OID). An attacker who can authenticate to an affected device may submit a series of valid but specially formed SNMP requests designed to trigger the vulnerability. Successful exploitation will cause the device to restart because of an attempt to access an invalid memory region.
Cisco has released software updates that address this vulnerability. Workarounds that mitigate this vulnerability are not available.
This advisory is available at the following link: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160620-iosxe
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Workarounds are not available.
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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.
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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.
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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.
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Show LessVersion Description Section Status Date 1.0 Initial public release — Final 2016-June-20
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