CVE-2022-24337 in TeamCity
Summary
by MITRE • 02/25/2022
In JetBrains TeamCity before 2021.2, health items of pull requests were shown to users who lacked appropriate permissions.
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Analysis
by VulDB Data Team • 02/28/2022
The vulnerability identified as CVE-2022-24337 represents a critical access control flaw within JetBrains TeamCity version 2021.2 and earlier releases. This issue specifically affects the pull request health monitoring functionality, where the system fails to properly enforce authorization checks when displaying health items related to pull requests. The flaw allows unauthorized users to gain visibility into sensitive information that should only be accessible to those with appropriate permissions, fundamentally undermining the security model of the platform.
This vulnerability stems from inadequate input validation and permission checking mechanisms within the TeamCity application's health item display logic for pull requests. The technical implementation appears to lack proper access control verification before rendering health indicators, which are typically used to monitor build status, code quality metrics, and other development pipeline health signals. When users attempt to view pull request health items, the system should verify their authorization level against the associated project and repository permissions before presenting any data. However, this verification process is bypassed or insufficiently implemented, creating a path for unauthorized information disclosure.
The operational impact of this vulnerability extends beyond simple information disclosure, as it can enable attackers to gather intelligence about ongoing development activities, build failures, and code quality issues within projects they should not have access to. This information can be particularly valuable for malicious actors seeking to understand development processes, identify potential attack vectors, or plan targeted attacks against specific projects. The vulnerability affects the integrity of TeamCity's permission model and can compromise the confidentiality of development artifacts, build results, and integration status information that should remain restricted to authorized personnel only.
From a cybersecurity perspective, this vulnerability aligns with CWE-285, which addresses improper authorization issues in software systems, and can be categorized under ATT&CK technique T1566 for credential access and T1005 for data from local systems. The flaw represents a privilege escalation path that allows users to access resources beyond their intended scope, potentially enabling further exploitation or lateral movement within the development environment. Organizations utilizing TeamCity for continuous integration and deployment workflows face significant risk if this vulnerability remains unpatched, as it could expose sensitive development information to unauthorized parties.
The recommended mitigation strategy involves upgrading to JetBrains TeamCity version 2021.2 or later, which contains the necessary fixes to properly implement access control for pull request health items. Additionally, organizations should conduct thorough access control reviews and implement network segmentation to limit exposure of TeamCity instances to unauthorized users. Regular security assessments of the platform's permission model and continuous monitoring for unauthorized access attempts should be implemented as part of the overall security posture. Administrators should also verify that proper user role assignments are in place and that the principle of least privilege is enforced across all TeamCity configurations to minimize potential impact from similar vulnerabilities.