Actively exploited · Published Jul 1, 2024 · Assigned by cisco
CVE-2024-20399Cisco NX-OS Software CLI Command Injection Vulnerability
Medium 6.0 Exploited
In plain English
A medium-severity OS command injection in Cisco NX-OS Software from Cisco. Attackers are actively exploiting it in the wild (listed by CISA on July 2, 2024). The chance it is exploited in the next 30 days is estimated at 4.3% (higher than 91% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA guidance
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Federal agencies must remediate by Jul 23, 2024.
Official description
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
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Cisco NX-OS Software | 8.2(5)7.3(6)N1(1a)7.3(5)D1(1)8.4(2)7.3(6)N1(1)6.2(2)8.4(3)9.2(3) |
Weakness: CWE-78 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N