PT-2019-2289 · Cisco · Cisco Nx-Os+1

Published 2019-05-15 · Updated 2020-10-09 · CVE-2019-1730

Positive Technologies (AI Summary)

CVSS v2.0

7.2

High

Base vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Cisco NX-OS Software (affected versions not specified)

Description A vulnerability in the Bash shell implementation could allow an authenticated, local attacker to bypass the limited command set of the restricted Guest Shell and execute commands at the privilege level of a network-admin user outside of the Guest Shell. The attacker must authenticate with valid administrator device credentials. The vulnerability is due to the incorrect implementation of a CLI command that allows a Bash command to be incorrectly invoked on the Guest Shell CLI. An attacker could exploit this vulnerability by authenticating to the device and entering a crafted command at the Guest Shell prompt. A successful exploit could allow the attacker to issue commands that should be restricted by a Guest Shell account.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-264

Related Identifiers

BDU:2019-02060

CVE-2019-1730

Affected Products

Cisco Nx-Os

Cisco Nexus

References · 6

• https://osv.dev/vulnerability/CVE-2019-1730 · Vendor Advisory
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-bash-bypass · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-1730 · Security Note
• https://bdu.fstec.ru/vul/2019-02060 · Security Note
• https://cvedetails.com/cve/CVE-2019-1730 · Note
• http://securityfocus.com/bid/108397 · Note