Cisco SD-WAN CLI Arbitrary File Write (CVE-2020-26071)
CVE-2020-26071 Published on November 18, 2024

Cisco SD-WAN vEdge Arbitrary File Creation Vulnerability
A vulnerability in the CLI of Cisco SD-WAN Software could allow an authenticated, local attacker to create or overwrite arbitrary files on an affected device, which could result in a denial of service (DoS) condition. The vulnerability is due to insufficient input validation for specific commands. An attacker could exploit this vulnerability by including crafted arguments to those specific commands. A successful exploit could allow the attacker to create or overwrite arbitrary files on the affected device, which could result in a DoS condition.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

NVD

Vulnerability Analysis

CVE-2020-26071 can be exploited with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, a high impact on integrity and availability.

Attack Vector:

LOCAL

Attack Complexity:

LOW

Privileges Required:

LOW

User Interaction:

NONE

Scope:

CHANGED

Confidentiality Impact:

NONE

Integrity Impact:

HIGH

Availability Impact:

HIGH

Weakness Type

What is a Directory traversal Vulnerability?

The software 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 software 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.

CVE-2020-26071 has been classified to as a Directory traversal vulnerability or weakness.

Products Associated with CVE-2020-26071

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Cisco Catalyst Sd Wan Manager

Affected Versions

Cisco Catalyst SD-WAN Manager:

Version 20.1.12 is affected.
Version 19.2.1 is affected.
Version 18.4.4 is affected.
Version 18.4.5 is affected.
Version 20.1.1.1 is affected.
Version 20.1.1 is affected.
Version 19.3.0 is affected.
Version 19.2.2 is affected.
Version 19.2.099 is affected.
Version 18.3.6 is affected.
Version 18.3.7 is affected.
Version 19.2.0 is affected.
Version 18.3.8 is affected.
Version 19.0.0 is affected.
Version 19.1.0 is affected.
Version 18.4.302 is affected.
Version 18.4.303 is affected.
Version 19.2.097 is affected.
Version 19.2.098 is affected.
Version 17.2.10 is affected.
Version 18.3.6.1 is affected.
Version 19.0.1a is affected.
Version 18.2.0 is affected.
Version 18.4.3 is affected.
Version 18.4.1 is affected.
Version 17.2.8 is affected.
Version 18.3.3.1 is affected.
Version 18.4.0 is affected.
Version 18.3.1 is affected.
Version 17.2.6 is affected.
Version 17.2.9 is affected.
Version 18.3.4 is affected.
Version 17.2.5 is affected.
Version 18.3.1.1 is affected.
Version 18.3.5 is affected.
Version 18.4.0.1 is affected.
Version 18.3.3 is affected.
Version 17.2.7 is affected.
Version 17.2.4 is affected.
Version 18.3.0 is affected.
Version 19.2.3 is affected.
Version 18.4.501_ES is affected.

Cisco SD-WAN vContainer:

Version 18.4.5 is affected.
Version 20.1.12 is affected.
Version 18.3.6 is affected.
Version 19.2.1 is affected.
Version 19.3.0 is affected.
Version 20.1.1 is affected.
Version 19.2.2 is affected.
Version 18.3.8 is affected.
Version 18.4.3 is affected.
Version 18.4.4 is affected.
Version 18.4.302 is affected.
Version 19.1.0 is affected.
Version 18.4.303 is affected.
Version 19.2.0 is affected.
Version 19.2.098 is affected.
Version 17.2.10 is affected.
Version 18.3.7 is affected.
Version 18.3.1 is affected.
Version 19.2.099 is affected.
Version 19.2.097 is affected.
Version 18.3.4 is affected.
Version 18.2.0 is affected.
Version 18.3.5 is affected.
Version 18.4.1 is affected.
Version 17.2.5 is affected.
Version 17.2.7 is affected.
Version 17.2.8 is affected.
Version 17.2.9 is affected.
Version 18.4.0 is affected.
Version 17.2.6 is affected.
Version 18.3.0 is affected.
Version 17.2.4 is affected.
Version 18.3.3 is affected.
Version 19.2.3 is affected.

Cisco SD-WAN vEdge Cloud:

Version 19.2.1 is affected.
Version 20.1.12 is affected.
Version 18.4.4 is affected.
Version 19.3.0 is affected.
Version 18.3.8 is affected.
Version 19.2.2 is affected.
Version 20.1.1 is affected.
Version 18.3.6 is affected.
Version 18.4.3 is affected.
Version 18.4.302 is affected.
Version 18.4.5 is affected.
Version 18.4.303 is affected.
Version 19.2.098 is affected.
Version 19.1.0 is affected.
Version 17.2.10 is affected.
Version 19.0.1a is affected.
Version 19.2.099 is affected.
Version 18.3.7 is affected.
Version 19.2.097 is affected.
Version 18.3.1 is affected.
Version 19.2.0 is affected.
Version 17.2.9 is affected.
Version 18.3.4 is affected.
Version 18.2.0 is affected.
Version 18.4.1 is affected.
Version 17.2.5 is affected.
Version 18.4.0 is affected.
Version 18.3.5 is affected.
Version 18.3.3 is affected.
Version 17.2.7 is affected.
Version 17.2.6 is affected.
Version 17.2.8 is affected.
Version 18.3.0 is affected.
Version 17.2.4 is affected.
Version 19.2.3 is affected.

Cisco SD-WAN vEdge Router:

Version 18.4.303 is affected.
Version 18.3.7 is affected.
Version 19.3.0 is affected.
Version 18.2.0 is affected.
Version 20.1.12 is affected.
Version 19.2.099 is affected.
Version 17.2.10 is affected.
Version 18.3.3 is affected.
Version 18.3.6 is affected.
Version 19.0.0 is affected.
Version 17.2.6 is affected.
Version 18.4.0 is affected.
Version 19.1.01 is affected.
Version 19.2.098 is affected.
Version 18.3.1 is affected.
Version 18.4.302 is affected.
Version 19.2.2 is affected.
Version 18.3.5 is affected.
Version 17.2.9 is affected.
Version 19.1.0 is affected.
Version 20.1.11 is affected.
Version 19.2.097 is affected.
Version 18.4.5 is affected.
Version 17.2.5 is affected.
Version 17.2.8 is affected.
Version 18.3.8 is affected.
Version 18.3.0 is affected.
Version 18.4.3 is affected.
Version 18.4.4 is affected.
Version 19.2.1 is affected.
Version 17.2.4 is affected.
Version 18.3.4 is affected.
Version 19.0.1a is affected.
Version 20.1.1 is affected.
Version 17.2.7 is affected.
Version 18.4.1 is affected.
Version 19.2.0 is affected.
Version 19.2.3 is affected.

Exploit Probability

EPSS

0.14%

Percentile

33.27%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.