CVE-2024-27198KEV · OVERDUECWE-288

JetBrains TeamCity Authentication Bypass Vulnerability

Critical · published March 4, 2024

Patch now

Confirmed exploited, and the score agrees

CVSS calls it critical at 9.8. It is confirmed in active exploitation. It sits in the 100.0th percentile for exploit probability.

941
days past CISA
deadline
CVSS v3.1
9.8
EPSS
100%
Percentile
100.0
In the wild
Confirmed
What it is

🚨 An authentication bypass in JetBrains TeamCity makes it startlingly easy for attackers to perform admin actions without a valid login! 🔥 Think of it like an office with a front door that’s wide open, allowing anyone to walk in and access sensitive files without a keycard. This flaw lets unauthorized users slip right past security and take control as if they owned the place! The consequences are absolutely devastating: an attacker could manipulate configurations, access confidential data, or even disrupt services entirely. Imagine the chaos as they could execute any admin-level command without breaking a sweat!

Put simply

Think of it like an office with a front door that’s wide open, allowing anyone to walk in and access sensitive files without a keycard. This flaw lets unauthorized users slip right past security and take control as if they owned the place! This vulnerability allows users to bypass authentication checks, enabling any unauthorized individual to perform administrative actions on the TeamCity server, which is a major risk for organizations relying on this CI/CD tool.

What to do

The consequences are absolutely devastating: an attacker could manipulate configurations, access confidential data, or even disrupt services entirely. Imagine the chaos as they could execute any admin-level command without breaking a sweat! Immediate action is crucial! Upgrade to TeamCity version 2023.11.4 or later to patch this vulnerability. Additionally, review your access controls and ensure that only authorized users have the necessary permissions. 🛡️ You've got this! Just follow these steps, and you’ll lock down your TeamCity environment in no time! 🚀

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.99938 · 100.0th percentile
Weakness
CWE-288 · Authentication Bypass Using an Alternate Path or Channel
Published
2024-03-04T17:21Z
KEV added
2024-03-07 · due 2024-03-28
EPSS history
Timeline
  • 07 MAR 00:00Z
    Added to CISA KEV — remediate by Mar 28
    kev
  • 04 MAR 17:21Z
    In JetBrains TeamCity before 2023.11.4 authentication bypass allowing to perform admin actions was possible
    cvelistv5