Rapid7 Vulnerability & Exploit Database

Cisco XE: CVE-2021-1356: Cisco IOS XE Software Web UI Denial of Service Vulnerabilities

Free InsightVM Trial No Credit Card Necessary
Watch Demo See how it all works
Back to Search

Cisco XE: CVE-2021-1356: Cisco IOS XE Software Web UI Denial of Service Vulnerabilities

Severity
4
CVSS
(AV:N/AC:M/Au:S/C:N/I:N/A:P)
Published
03/25/2021
Created
03/25/2021
Added
03/25/2021
Modified
11/13/2023

Description

Multiple vulnerabilities in the web UI of Cisco IOS XE Software could allow an authenticated, remote attacker with read-only privileges to cause the web UI software to become unresponsive and consume vty line instances, resulting in a denial of service (DoS) condition. These vulnerabilities are due to insufficient error handling in the web UI. An attacker could exploit these vulnerabilities by sending crafted HTTP packets to an affected device. A successful exploit could allow the attacker to cause the web UI software to become unresponsive and consume all available vty lines, preventing new session establishment and resulting in a DoS condition. Manual intervention would be required to regain web UI and vty session functionality. Note: These vulnerabilities do not affect the console connection.

Solution(s)

  • cisco-xe-upgrade-latest

References

insightVM

Advanced vulnerability management analytics and reporting.
Key Features
Free InsightVM Trial View All Features

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;