CVE Vulnerabilities

CVE-2021-1434

Files or Directories Accessible to External Parties

Published: Mar 24, 2021 | Modified: Nov 07, 2023
CVSS 3.x
6
MEDIUM
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
CVSS 2.x
6.6 MEDIUM
AV:L/AC:L/Au:N/C:N/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu

A vulnerability in the CLI of Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to overwrite arbitrary files in the underlying file system. This vulnerability is due to insufficient validation of the parameters of a specific CLI command. An attacker could exploit this vulnerability by issuing that command with specific parameters. A successful exploit could allow the attacker to overwrite the content of any arbitrary file that resides on the underlying host file system.

Weakness

The product makes files or directories accessible to unauthorized actors, even though they should not be.

Affected Software

Name Vendor Start Version End Version
Ios_xe Cisco 16.11.1 (including) 16.11.1 (including)
Ios_xe Cisco 16.11.1a (including) 16.11.1a (including)
Ios_xe Cisco 16.11.1b (including) 16.11.1b (including)
Ios_xe Cisco 16.11.1c (including) 16.11.1c (including)
Ios_xe Cisco 16.11.1s (including) 16.11.1s (including)
Ios_xe Cisco 16.11.2 (including) 16.11.2 (including)
Ios_xe Cisco 16.12.1 (including) 16.12.1 (including)
Ios_xe Cisco 16.12.1a (including) 16.12.1a (including)
Ios_xe Cisco 16.12.1c (including) 16.12.1c (including)
Ios_xe Cisco 16.12.1s (including) 16.12.1s (including)
Ios_xe Cisco 16.12.1t (including) 16.12.1t (including)
Ios_xe Cisco 16.12.1w (including) 16.12.1w (including)
Ios_xe Cisco 16.12.1x (including) 16.12.1x (including)
Ios_xe Cisco 16.12.1y (including) 16.12.1y (including)
Ios_xe Cisco 16.12.1z (including) 16.12.1z (including)
Ios_xe Cisco 16.12.1za (including) 16.12.1za (including)
Ios_xe Cisco 16.12.2 (including) 16.12.2 (including)
Ios_xe Cisco 16.12.2a (including) 16.12.2a (including)
Ios_xe Cisco 16.12.2s (including) 16.12.2s (including)
Ios_xe Cisco 16.12.2t (including) 16.12.2t (including)
Ios_xe Cisco 16.12.3 (including) 16.12.3 (including)
Ios_xe Cisco 16.12.3a (including) 16.12.3a (including)
Ios_xe Cisco 16.12.3s (including) 16.12.3s (including)
Ios_xe Cisco 17.2.1 (including) 17.2.1 (including)
Ios_xe Cisco 17.2.1a (including) 17.2.1a (including)
Ios_xe Cisco 17.2.1r (including) 17.2.1r (including)
Ios_xe Cisco 17.2.1v (including) 17.2.1v (including)

Extended Description

Web servers, FTP servers, and similar servers may store a set of files underneath a “root” directory that is accessible to the server’s users. Applications may store sensitive files underneath this root without also using access control to limit which users may request those files, if any. Alternately, an application might package multiple files or directories into an archive file (e.g., ZIP or tar), but the application might not exclude sensitive files that are underneath those directories. In cloud technologies and containers, this weakness might present itself in the form of misconfigured storage accounts that can be read or written by a public or anonymous user.

Potential Mitigations

References