CVE-2017-6739

HighActively exploited (CISA KEV)

Description

A vulnerability in the SNMP implementation of could allow an authenticated, remote attacker to cause a reload of the affected system or to remotely execute code. An attacker could exploit this vulnerability by sending a crafted SNMP packet to the affected device.  The vulnerability is due to a buffer overflow in the affected code area. The vulnerability affects all versions of SNMP (versions 1, 2c, and 3). The attacker must know the SNMP read only community string (SNMP version 2c or earlier) or the user credentials (SNMPv3). An exploit could allow the attacker to execute arbitrary code and obtain full control of the system or to cause a reload of the affected system. Only traffic directed to the affected system can be used to exploit this vulnerability.

SeverityHigh
CVSS8.8
Exploit probability—
ProductCisco IOS and IOS XE Software
PublishedJul 17, 2017
First seenJul 17, 2017
Added to KEVMar 3, 2022

How to fix

CISA required action

Apply updates per vendor instructions.

CISA due date: Mar 24, 2022

Affected products

ProductAffected versionsFixed in
cisco ios12.0 ≤ v ≤ 12.4, 15.0 ≤ v ≤ 15.6—
cisco ios_xe2.2.0 ≤ v ≤ 3.17.0—

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.