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Cisco IOS XE Software SNMP Subsystem Denial of Service Vulnerability

Information

Severity

Severity

Medium

Family

Family

CISCO

CVSSv2 Base

CVSSv2 Base

6.8

CVSSv2 Vector

CVSSv2 Vector

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

Solution Type

Solution Type

Vendor Patch

Created

Created

6 years ago

Modified

Modified

4 years ago

Summary

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.

Detection Method

Detection Method

Checks if a vulnerable version is present on the target host.

Solution

Solution

See the referenced vendor advisory for a solution.

Common Vulnerabilities and Exposures (CVE)