6.1
CVSSv3

CVE-2021-20133

Published: 30/12/2021 Updated: 12/01/2022
CVSS v2 Base Score: 7.1 | Impact Score: 9.2 | Exploitability Score: 5.1
CVSS v3 Base Score: 6.1 | Impact Score: 5.2 | Exploitability Score: 0.9
VMScore: 632
Vector: AV:A/AC:L/Au:S/C:C/I:N/A:C

Vulnerability Summary

Quagga Services on D-Link DIR-2640 less than or equal to version 1.11B02 are affected by an absolute path traversal vulnerability that allows a remote, authenticated malicious user to set the "message of the day" banner to any file on the system, allowing them to read all or some of the contents of those files. Such sensitive information as hashed credentials, hardcoded plaintext passwords for other services, configuration files, and private keys can be disclosed in this fashion. Improper handling of filenames that identify virtual resources, such as "/dev/urandom" allows an malicious user to effect a denial of service attack against the command line interfaces of the Quagga services (zebra and ripd).

Vulnerability Trend

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dlink dir-2640-us_firmware