CVE-2021-1264CWE-78

Cisco DNA Center Command Runner Command Injection Vulnerability

Critical · published January 20, 2021

CVSS v3.1
9.6
EPSS
4%
Percentile
90.2
In the wild
Unconfirmed
What it is

🚨 A crafted command is all it takes to seize control! This critical vulnerability in Cisco DNA Center’s Command Runner tool lets authenticated attackers launch command injection attacks. 🔥 Imagine a restaurant where the chef blindly follows any order without checking the recipe—just one risky dish can ruin the whole menu! Here, insufficient input validation means attackers can serve up whatever commands they want, bypassing security safeguards. With this vulnerability, an attacker could execute arbitrary commands on any device managed by Cisco DNA Center, leading to complete system compromise. It’s a recipe for chaos—imagine the havoc if someone could change your security protocols or access sensitive data, all while staying under the radar.

Put simply

Imagine a restaurant where the chef blindly follows any order without checking the recipe—just one risky dish can ruin the whole menu! Here, insufficient input validation means attackers can serve up whatever commands they want, bypassing security safeguards. This command injection vulnerability arises from the Command Runner tool’s failure to validate input properly, allowing an authenticated remote attacker to run arbitrary CLI commands via crafted input during command execution or through API calls.

What to do

With this vulnerability, an attacker could execute arbitrary commands on any device managed by Cisco DNA Center, leading to complete system compromise. It’s a recipe for chaos—imagine the havoc if someone could change your security protocols or access sensitive data, all while staying under the radar. Immediate action is crucial! Upgrade Cisco DNA Center to the latest patched version to close this vulnerability. Conduct a review of all input handling practices to prevent similar issues in the future. You've got this! With the right steps, you can secure your systems and keep the internet safe from these crafty attacks. 🛡️

The record
Technical detail
CVSS v3.1
9.6 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.03886 · 90.2th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2021-01-20T19:57Z
EPSS history
Timeline
  • 20 JAN 19:57Z
    Cisco DNA Center Command Runner Command Injection Vulnerability
    cvelistv5