What is CVE-2019-1727?

CVE-2019-1727 is a vulnerability in the Python scripting subsystem of Cisco NX-OS Software that could allow an authenticated, local attacker to execute arbitrary commands with elevated privileges.

What is the severity of CVE-2019-1727?

The severity of CVE-2019-1727 is high with a CVSS score of 6.7.

Which Cisco products are affected by CVE-2019-1727?

Cisco NX-OS Software versions 5.2 to 8.1(1b), 8.2 to 8.3(1) are affected by CVE-2019-1727.

How can I fix CVE-2019-1727?

Cisco has released patches to address the vulnerability. It is recommended to update to the latest version of Cisco NX-OS Software.

Where can I find more information about CVE-2019-1727?

You can find more information about CVE-2019-1727 on the Cisco Security Advisory page and the SecurityFocus website.

Vulnerability/
CVE-2019-1727

high

7.2

CWE

78 264

15/5/2019

17/9/2024

CVE-2019-1727: Cisco NX-OS Software Python Parser Privilege Escalation Vulnerability

First published: Wed May 15 2019(Updated: )

A vulnerability in the Python scripting subsystem of Cisco NX-OS Software could allow an authenticated, local attacker to escape the Python parser and issue arbitrary commands to elevate the attacker's privilege level. The vulnerability is due to insufficient sanitization of user-supplied parameters that are passed to certain Python functions in the scripting sandbox of the affected device. An attacker could exploit this vulnerability to escape the scripting sandbox and execute arbitrary commands to elevate the attacker's privilege level. To exploit this vulnerability, the attacker must have local access and be authenticated to the targeted device with administrative or Python execution privileges. These requirements could limit the possibility of a successful exploit.

Credit: ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Cisco Nx-os	>=5.2<8.1\(1b\)
Cisco Nx-os	>=8.2<8.3\(1\)
Cisco MDS 9000
Cisco Mds 9100
Cisco Mds 9200
Cisco Mds 9500
Cisco Mds 9700
Cisco Nx-os	>=7.0\(3\)i4<7.0\(3\)i4\(8\)
Cisco Nx-os	>=7.0\(3\)i5<7.0\(3\)i7\(3\)
Cisco Nexus 3000
Cisco Nexus 3100
Cisco Nexus 3100-z
Cisco Nexus 3100v
Cisco Nexus 3200
Cisco Nexus 3400
Cisco Nexus 3500
Cisco Nexus 3524-x
Cisco Nexus 3524-xl
Cisco Nexus 3548-x
Cisco Nexus 3548-xl
Cisco Nexus 3600
Cisco Nexus 9000
Cisco Nexus 9200
Cisco Nexus 9300
Cisco Nexus 9500
Cisco Nx-os	>=7.3<7.3\(4\)n1\(1\)
Cisco Nexus 5500
Cisco Nexus 5600
Cisco Nexus 6000
Cisco Nx-os	>=6.2<7.3\(3\)d1\(1\)
Cisco Nx-os	>=8.0<8.3\(1\)
Cisco Nexus 7000
Cisco Nexus 7700

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Reference Links

Frequently Asked Questions

What is CVE-2019-1727?
CVE-2019-1727 is a vulnerability in the Python scripting subsystem of Cisco NX-OS Software that could allow an authenticated, local attacker to execute arbitrary commands with elevated privileges.
What is the severity of CVE-2019-1727?
The severity of CVE-2019-1727 is high with a CVSS score of 6.7.
Which Cisco products are affected by CVE-2019-1727?
Cisco NX-OS Software versions 5.2 to 8.1(1b), 8.2 to 8.3(1) are affected by CVE-2019-1727.
How can I fix CVE-2019-1727?
Cisco has released patches to address the vulnerability. It is recommended to update to the latest version of Cisco NX-OS Software.
Where can I find more information about CVE-2019-1727?
You can find more information about CVE-2019-1727 on the Cisco Security Advisory page and the SecurityFocus website.