8.5
CVSSv2

CVE-2021-34718

Published: 09/09/2021 Updated: 07/11/2023
CVSS v2 Base Score: 8.5 | Impact Score: 9.2 | Exploitability Score: 8
CVSS v3 Base Score: 8.1 | Impact Score: 5.2 | Exploitability Score: 2.8
VMScore: 756
Vector: AV:N/AC:L/Au:S/C:C/I:C/A:N

Vulnerability Summary

A vulnerability in the SSH Server process of Cisco IOS XR Software could allow an authenticated, remote malicious user to overwrite and read arbitrary files on the local device. This vulnerability is due to insufficient input validation of arguments that are supplied by the user for a specific file transfer method. An attacker with lower-level privileges could exploit this vulnerability by specifying Secure Copy Protocol (SCP) parameters when authenticating to a device. A successful exploit could allow the malicious user to elevate their privileges and retrieve and upload files on a device that they should not have access to.

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Vendor Advisories

A vulnerability in the SSH Server process of Cisco IOS XR Software could allow an authenticated, remote attacker to overwrite and read arbitrary files on the local device This vulnerability is due to insufficient input validation of arguments that are supplied by the user for a specific file transfer method An attacker with lower-level privileges ...