EN

CVE-2024-20399

Medium
6.0
0.05.010.0
Year
2024
Published
Jul 1, 2024
Known Affected Devices
0
CVSS Score
6.0

What is CVE-2024-20399?

A vulnerability in the CLI of Cisco NX-OS Software could allow an authenticated user in possession of Administrator credentials to execute arbitrary commands as root on the underlying operating system of an affected device. This vulnerability is due to insufficient validation of arguments that are passed to specific configuration CLI commands. An attacker could exploit this vulnerability by including crafted input as the argument of an affected configuration CLI command. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system with the privileges of root. Note: To successfully exploit this vulnerability on a Cisco NX-OS device, an attacker must have Administrator credentials. The following Cisco devices already allow administrative users to access the underlying operating system through the bash-shell feature, so, for these devices, this vulnerability does not grant any additional privileges: Nexus 3000 Series Switches Nexus 7000 Series Switches that are running Cisco NX-OS Software releases 8.1(1) and later Nexus 9000 Series Switches in standalone NX-OS mode

CVSS Vector Breakdown

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

Requires local access — attacker must be logged in or have physical access to the device.

AC
Attack Complexity
Low

No special conditions required. Exploit can be performed reliably and repeatedly.

PR
Privileges Required
High

Administrative or root-level privileges required to exploit.

UI
User Interaction
None

No user interaction required. Exploit runs without any victim action.

S
Scope
Unchanged

Exploiting the vulnerability only affects the vulnerable component itself.

C
Confidentiality Impact
High

Complete loss of confidentiality. All data on the component may be exposed.

I
Integrity Impact
High

Complete loss of integrity. Attacker can modify any file or data on the component.

A
Availability Impact
None

No availability impact. Service remains fully operational.

Known Affected Devices

Cisco Cisco ISR 4451 Cisco Cisco ISR 931 Cisco Cisco ASR 1001-X Cisco Cisco ASR 1001-HX Cisco Cisco ASR 1002-X Cisco Cisco ASR 1002-HX Cisco Cisco ASR 9912 Cisco Cisco Catalyst 2960-24TC-L Cisco Cisco Catalyst 2960X-24TS-L Cisco Cisco Catalyst 2960X-48TS-L Cisco Cisco Catalyst 2960X-24PSQ-L Cisco Cisco Catalyst 2960XR-24TS-I Cisco Cisco Catalyst 2960L-24TS-LL Cisco Cisco Catalyst 3560CX-8PC-S Cisco Cisco Catalyst 3650-24PS-L Cisco Cisco Catalyst 3650-48TS-L Cisco Cisco Catalyst 3750X-24T-S Cisco Cisco Catalyst 3750X-24P-S Cisco Cisco Catalyst 9200-24P Cisco Cisco Catalyst 9200-24T Cisco Cisco Catalyst 9200-48P Cisco Cisco Catalyst 9200-48T Cisco Cisco Catalyst 9200L-24P-4G Cisco Cisco Catalyst 9200L-24P-4X Cisco Cisco Catalyst 9200L-48P-4G Cisco Cisco Catalyst 9200L-48P-4X Cisco Cisco Catalyst 9300-24P Cisco Cisco Catalyst 9300-24T Cisco Cisco Catalyst 9300-24U Cisco Cisco Catalyst 9300-24UX Cisco Cisco Catalyst 9300-48P Cisco Cisco Catalyst 9300-48T Cisco Cisco Catalyst 9300-48U Cisco Cisco Catalyst 9300-48UXM Cisco Cisco Catalyst 9300L-24T-4G Cisco Cisco Catalyst 9300L-48P-4G Cisco Cisco Catalyst 9300L-48T-4G Cisco Cisco Catalyst 9404R Cisco Cisco Catalyst 9407R Cisco Cisco Catalyst 9500-12Q Cisco Cisco Catalyst 9500-16X Cisco Cisco Catalyst 9500-24Q Cisco Cisco Catalyst 9500-32C Cisco Cisco Catalyst 9500-40X Cisco Cisco Catalyst 9500-48Y4C Cisco Cisco Catalyst 9600-40YC Cisco Cisco Nexus 6001 Cisco Cisco Nexus 7004 Cisco Cisco Nexus 7009 Cisco Cisco Nexus 9364C Cisco Cisco Nexus 9372PX Cisco Cisco Nexus 9504 Cisco Cisco Catalyst 9800-L-F

FAQ

How severe is CVE-2024-20399?

CVE-2024-20399 has a CVSS score of 6.0/10, rated as Medium. Review the affected products list and apply vendor patches.

What does the CVSS score mean for CVE-2024-20399?

CVSS (Common Vulnerability Scoring System) rates vulnerability severity from 0.0 to 10.0. CVE-2024-20399 scores 6.0/10 (Medium). Scores 9.0–10.0 are Critical, 7.0–8.9 are High, 4.0–6.9 are Medium, and below 4.0 are Low.

Which devices are affected by CVE-2024-20399?

The list of devices confirmed to be affected by CVE-2024-20399 is shown in the "Affected Devices" section above. Check your firmware version against the vendor security advisory and apply the latest patch.

How do I fix or mitigate CVE-2024-20399?

Apply the latest firmware or software update from the vendor. Check the References section above for official advisories and patch notes. If no patch is available, consider disabling the affected feature or isolating the device from untrusted networks.