Cisco Enterprise NFV Infrastructure Software CLI path traversal

Summaryinfo

A vulnerability was found in Cisco Enterprise NFV Infrastructure Software. It has been classified as critical. This issue affects some unknown processing of the component CLI. The manipulation leads to path traversal. This vulnerability is referenced as CVE-2020-3236. The attack can only be performed from a local environment. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Cisco Enterprise NFV Infrastructure Software (unknown version) and classified as critical. This issue affects an unknown code block of the component CLI. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability in the CLI of Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an authenticated, local attacker to gain root shell access to the underlying operating system and overwrite or read arbitrary files. The attacker would need valid administrative credentials. This vulnerability is due to improper input validation of CLI command arguments. An attacker could exploit this vulnerability by using path traversal techniques when executing a vulnerable command. A successful exploit could allow the attacker to gain root shell access to the underlying operating system and overwrite or read arbitrary files on an affected device.

The weakness was published 06/18/2020 as cisco-sa-nfvis-ptrav-SHMzzwVR as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. The identification of this vulnerability is CVE-2020-3236 since 12/12/2019. Attacking locally is a requirement. The requirement for exploitation is a simple authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

Upgrading eliminates this vulnerability.

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Productinfo

Vendor

• Cisco

Name

• Enterprise NFV Infrastructure Software

License

• commercial

Website

• Vendor: https://www.cisco.com/

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