CVE-2017-12232: Cisco IOS Software for Cisco Integrated Services Routers Denial-of-Service Vulnerability

Description

A vulnerability in the implementation of a protocol in Cisco Integrated Services Routers Generation 2 (ISR G2) Routers running Cisco IOS 15.0 through 15.6 could allow an unauthenticated, adjacent attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to a misclassification of Ethernet frames. An attacker could exploit this vulnerability by sending a crafted Ethernet frame to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Cisco Bug IDs: CSCvc03809.

CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack vector

Adjacent

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

None

Integrity

None

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)2.2% · higher than 82% of CVEs

Exploited in the wildYes

CISA KEVListed Mar 3, 2022

Federal remediation dueMar 24, 2022

Ransomware campaign useNot known

Affected products

Which versions

CI

Cisco IOS ·

Cisco IOS · source: vendor

IO

Ios · Cisco

15.0 through 15.6 · source: NVD

IS

IOS software · Cisco

All versions, or not specified · source: KEV