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CVE-2021-1394

CVE information

Published

3 years ago

Last Modified

4 months ago

CVSSv2.0 Severity

Medium

CVSSv3.1 Severity

Medium

Impact Analysis

Description

A vulnerability in the ingress traffic manager of Cisco IOS XE Software for Cisco Network Convergence System (NCS) 520 Routers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition in the web management interface of an affected device. This vulnerability is due to incorrect processing of certain IPv4 TCP traffic that is destined to an affected device. An attacker could exploit this vulnerability by sending a large number of crafted TCP packets to the affected device. A successful exploit could allow the attacker to cause the web management interface to become unavailable, resulting in a DoS condition. Note: This vulnerability does not impact traffic that is going through the device or going to the Management Ethernet interface of the device..

CVSSv2.0 Score

Severity
Medium
Base Score
4.3/10
Exploit Score
8.6/10
Access Vector
Network
Access Complexity
Medium
Authentication Required
None
Impact Score
2.9/10
Confidentiality Impact
None
Availability Impact
Partial
Integrity Impact
None

CVSSv3.1 Score

Severity
Medium
Base Score
5.3/10
Exploit Score
3.9/10
Access Vector
Network
Access Complexity
Low
Privileges Required
None
Impact Score
1.4/10
Confidentiality Impact
None
Availability Impact
Low
Integrity Impact
None
Scope
Unchanged
User Interaction
None

Products Affected

CPE Affected Vulnerable Excluding Edit
cpe:2.3:o:cisco:ios_xe:16.10.1:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:cisco:ios_xe:16.10.1s:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:cisco:ios_xe:16.10.1d:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:cisco:ios_xe:16.10.1a:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:cisco:ios_xe:16.10.1f:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:cisco:ios_xe:16.10.1g:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:cisco:ios_xe:16.10.1e:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:cisco:ios_xe:16.10.1b:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:cisco:ios_xe:16.10.1c:*:*:*:*:*:*:*
  Yes
- -
cpe:2.3:o:cisco:ios_xe:17.2.1v:*:*:*:*:*:*:*
  Yes
- -