CVE-2019-1937CWE-287

Cisco Integrated Management Controller Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big Data Authentication Bypass Vulnerability

Critical · published August 21, 2019

Patch now

High probability of exploitation

CVSS calls it critical at 9.8. It sits in the 99.5th percentile for exploit probability.

CVSS v3.0
9.8
EPSS
76%
Percentile
99.5
In the wild
Unconfirmed
What it is

🚨 An unauthenticated attacker can snag admin-level access without breaking a sweat! This vulnerability in Cisco's management interface means that anyone can exploit it with just a few crafty requests. 🔥 Think of it like a hotel where a guest can slip into the back office without a keycard—no one checks the credentials at the door! The attacker can stroll in and make changes to any room they want, putting all guests at risk. If left unaddressed, this vulnerability could allow an attacker to take full control over the affected devices, potentially altering configurations, stealing sensitive data, or even launching attacks on other systems. Imagine a malicious actor having the power to manipulate entire infrastructures with just a few clicks—absolutely devastating!

Put simply

Think of it like a hotel where a guest can slip into the back office without a keycard—no one checks the credentials at the door! The attacker can stroll in and make changes to any room they want, putting all guests at risk. This vulnerability arises from insufficient validation of request headers during authentication, allowing attackers to acquire a valid session token for administrator privileges without authentication.

What to do

If left unaddressed, this vulnerability could allow an attacker to take full control over the affected devices, potentially altering configurations, stealing sensitive data, or even launching attacks on other systems. Imagine a malicious actor having the power to manipulate entire infrastructures with just a few clicks—absolutely devastating! To protect your systems, patch immediately to version 3.5(3a) or later. Additionally, implement strict access controls to monitor and limit who can make requests to the management interface. Regularly audit any existing tokens and session management practices to ensure they are secure. You've got this! With these steps, you'll lock down your devices and keep the bad guys at bay. 🛡️

The record
Technical detail
CVSS v3.0
9.8 · CRITICAL
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.75863 · 99.5th percentile
Weakness
CWE-287 · Improper Authentication
Published
2019-08-21T18:25Z
EPSS history
Timeline
  • 21 AUG 18:25Z
    Cisco Integrated Management Controller Supervisor, Cisco UCS Director, and Cisco UCS Director Express for Big Data Authentication Bypass Vulnerability
    cvelistv5