Cisco IOS XE Guest Shell path traversal

Summaryinfo

A vulnerability categorized as critical has been discovered in Cisco IOS XE. Impacted is an unknown function of the component Guest Shell. The manipulation results in path traversal. This vulnerability is known as CVE-2019-12666. Attacking locally is a requirement. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Cisco IOS XE (Router Operating System) (affected version unknown). Affected is an unknown functionality of the component Guest Shell. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A vulnerability in the Guest Shell of Cisco IOS XE Software could allow an authenticated, local attacker to perform directory traversal on the base Linux operating system of Cisco IOS XE Software. The vulnerability is due to incomplete validation of certain commands. An attacker could exploit this vulnerability by first accessing the Guest Shell and then entering specific commands. A successful exploit could allow the attacker to execute arbitrary code on the base Linux operating system.

The weakness was published 09/25/2019 as cisco-sa-20190925-dt as confirmed advisory (Website). The advisory is available at tools.cisco.com. This vulnerability is traded as CVE-2019-12666 since 06/04/2019. Local access is required to approach this attack. The successful exploitation needs a authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

Upgrading eliminates this vulnerability.

Similar entries are available at VDB-142294, VDB-142293, VDB-142291 and VDB-142288. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Router Operating System

Vendor

• Cisco

Name

• IOS XE

License

• commercial

Website

• Vendor: https://www.cisco.com/

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion