Cisco Catalyst SD-WAN Manager up to 20.3.1 File Transfer unnecessary privileges

Summaryinfo

A vulnerability was found in Cisco Catalyst SD-WAN Manager. It has been rated as critical. This impacts an unknown function of the component File Transfer. This manipulation causes unnecessary privileges. The identification of this vulnerability is CVE-2020-26074. The attack can only be executed locally. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Cisco Catalyst SD-WAN Manager. It has been declared as critical. Affected by this vulnerability is an unknown function of the component File Transfer. The manipulation with an unknown input leads to a unnecessary privileges vulnerability. The CWE definition for the vulnerability is CWE-250. The product performs an operation at a privilege level that is higher than the minimum level required, which creates new weaknesses or amplifies the consequences of other weaknesses. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability in system file transfer functions of Cisco SD-WAN vManage Software could allow an authenticated, local attacker to gain escalated privileges on the underlying operating system. The vulnerability is due to improper validation of path input to the system file transfer functions. An attacker could exploit this vulnerability by sending requests that contain specially crafted path variables to the vulnerable system. A successful exploit could allow the attacker to overwrite arbitrary files, allowing the attacker to modify the system in such a way that could allow the attacker to gain escalated privileges.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

It is possible to read the advisory at sec.cloudapps.cisco.com. This vulnerability is known as CVE-2020-26074 since 09/24/2020. The exploitation appears to be easy. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/04/2025). The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Network Management Software

Vendor

• Cisco

Name

• Catalyst SD-WAN Manager

Version

• 17.2.4
• 17.2.5
• 17.2.6
• 17.2.7
• 17.2.8
• 17.2.9
• 17.2.10
• 18.2.0
• 18.3.0
• 18.3.1
• 18.3.1.1
• 18.3.3
• 18.3.3.1
• 18.3.4
• 18.3.5
• 18.3.6
• 18.3.6.1
• 18.3.7
• 18.3.8
• 18.4.0
• 18.4.0.1
• 18.4.1
• 18.4.3
• 18.4.4
• 18.4.5
• 18.4.302
• 18.4.303
• 18.4.501_ES
• 19.0.0
• 19.0.1a
• 19.1.0
• 19.2.0
• 19.2.097
• 19.2.098
• 19.2.099
• 19.2.1
• 19.2.2
• 19.2.3
• 19.2.31
• 19.2.929
• 19.3.0
• 20.1.1
• 20.1.1.1
• 20.1.2
• 20.1.12
• 20.3.1

License

• commercial

Website

• Vendor: https://www.cisco.com/

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