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CVE-2019-1727

MEDIUMCVSS 6.7/10EPSS 0.55%

Last modified

CVE-2019-1727 is a medium-severity vulnerability rated 6.7/10 on the CVSS scale. 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. EPSS estimates a 0.55% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
6.7/10

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.55%

41.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoNx-Os>= 5.2, < 8.1\(1b\)
CiscoNx-Os>= 8.2, < 8.3\(1\)
CiscoNx-Os>= 7.0\(3\)i4, < 7.0\(3\)i4\(8\)
CiscoNx-Os>= 7.0\(3\)i5, < 7.0\(3\)i7\(3\)
CiscoNx-Os>= 7.3, < 7.3\(4\)n1\(1\)
CiscoNx-Os>= 6.2, < 7.3\(3\)d1\(1\)
CiscoNx-Os>= 8.0, < 8.3\(1\)

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-1727?
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.
How severe is CVE-2019-1727?
CVE-2019-1727 has a CVSS score of 6.7/10 (MEDIUM severity). The EPSS model estimates a 0.55% probability of exploitation in the next 30 days.
How do I fix CVE-2019-1727?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-1727?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST