CVE-2019-15848 : Security Advisory and Response

TeamCity versions 2019.1 and 2019.1.1 by JetBrains have a vulnerability that enables cross-site scripting (XSS), potentially allowing unauthorized HTTP requests to be sent to a TeamCity server using the credentials of the logged-in user.

Understanding CVE-2019-15848

This CVE involves a security vulnerability in JetBrains TeamCity versions 2019.1 and 2019.1.1 that could lead to cross-site scripting attacks.

What is CVE-2019-15848?

CVE-2019-15848 is a vulnerability in TeamCity versions 2019.1 and 2019.1.1 that allows for cross-site scripting (XSS) attacks, potentially enabling malicious actors to send unauthorized HTTP requests to a TeamCity server using the credentials of the currently logged-in user.

The Impact of CVE-2019-15848

The vulnerability in TeamCity versions 2019.1 and 2019.1.1 can have the following impacts:

Unauthorized HTTP requests may be sent to a TeamCity server.
Attackers could exploit the XSS vulnerability to perform actions on behalf of authenticated users.

Technical Details of CVE-2019-15848

This section provides more technical insights into the CVE.

Vulnerability Description

The vulnerability in JetBrains TeamCity versions 2019.1 and 2019.1.1 allows for cross-site scripting (XSS) attacks, potentially enabling the execution of arbitrary HTTP requests on the TeamCity server under the guise of the authenticated user.

Affected Systems and Versions

Product: TeamCity
Vendor: JetBrains
Versions: 2019.1 and 2019.1.1

Exploitation Mechanism

The vulnerability could be exploited by injecting malicious scripts into web pages viewed by authenticated users, leading to the execution of unauthorized actions on the TeamCity server.

Mitigation and Prevention

To address CVE-2019-15848 and enhance security, consider the following steps:

Immediate Steps to Take

Update TeamCity to a patched version that addresses the XSS vulnerability.
Monitor and restrict user input to prevent malicious script injection.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Educate users on safe browsing practices and the risks of XSS attacks.

Patching and Updates

Ensure that all software components, including TeamCity, are kept up to date with the latest security patches and fixes.