vulnerability

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
2021-03-25
Added
2021-03-25
Modified
2024-04-29

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

cisco-xe-upgrade-latest
Title
NEW

Explore Exposure Command

Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.