7.1

CVE-2021-20133

Exploit

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).

Data is provided by the National Vulnerability Database (NVD)
Dlink ≫ Dir-2640-us Firmware Version <= 1.11b02
   Dlink ≫ Dir-2640-us Version-
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.49% 0.643
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 6.1 0.9 5.2
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H
nvd@nist.gov 7.1 5.1 9.2
AV:A/AC:L/Au:S/C:C/I:N/A:C
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.