CVE-2021-20133

 

Published at: - 30-12-2021 11:15

Last modified: - 12-01-2022 09:03

Total changes: - 3

Description

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 attacker 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 attacker to effect a denial of service attack against the command line interfaces of the Quagga services (zebra and ripd).

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H

 

Verification logic

 

Reference

• https://www.tenable.com/security/research/tra-2021-44

 

Keywords

NVD

 

CVE-2021-20133

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures