Input validation error in Cisco IOS XE - CVE-2020-3516

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Main Vulnerability Database Vulnerabilities #VU47214

Input validation error in Cisco IOS XE - CVE-2020-3516

Published: September 24, 2020 / Updated: September 30, 2020


Vulnerability identifier: #VU47214
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-3516
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input during authentication. A remote authenticated attacker can enter unexpected characters during a valid authentication and crash the web server on the device.


Affected software

Cisco IOS XE
Stratix 5800

How to mitigate CVE-2020-3516

Install updates from vendor's website.

Cisco IOS XE - addressed in versions 16.9.6, 16.12.2, 17.1.1
Stratix 5800 - update to 16.12.01

External References

Related Security Bulletins