CVE-2023-48715 in Tuleap Community Edition
Summary
by MITRE • 12/11/2023
Tuleap is an open source suite to improve management of software developments and collaboration. Prior to version 15.2.99.103 or Tuleap Community Edition and prior to versions 15.2-4 and 15.1-8 of Tuleap Enterprise Edition, the name of the releases are not properly escaped on the edition page of a release. A malicious user with the ability to create a FRS release could force a victim having write permissions in the FRS to execute uncontrolled code. Tuleap Community Edition 15.2.99.103, Tuleap Enterprise Edition 15.2-4, and Tuleap Enterprise Edition 15.1-8 contain a fix for this issue.
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Analysis
by VulDB Data Team • 01/01/2024
The vulnerability identified as CVE-2023-48715 affects Tuleap, an open source software development management and collaboration platform. This security flaw exists in versions prior to 15.2.99.103 for Community Edition and versions prior to 15.2-4 and 15.1-8 for Enterprise Edition. The vulnerability stems from improper escaping of release names within the FRS (File Release System) edition page functionality, creating a potential code execution vector that could be exploited by malicious actors.
The technical implementation of this vulnerability involves insufficient input validation and output encoding within the FRS release management component. When a malicious user creates a FRS release with specially crafted name containing malicious content, the system fails to properly escape this input before rendering it on the edition page. This improper handling allows for cross-site scripting (XSS) conditions that can be escalated to remote code execution under specific circumstances. The vulnerability specifically targets users with write permissions in the FRS, making it particularly dangerous in collaborative environments where multiple developers have access to release management features.
The operational impact of this vulnerability is significant as it enables a malicious user with limited privileges to potentially compromise systems with write access to FRS components. The exploitation chain typically involves creating a malicious release with crafted content that, when viewed by a victim with appropriate permissions, triggers unintended code execution. This scenario represents a privilege escalation vulnerability that could allow attackers to gain unauthorized access to sensitive development environments and potentially compromise the integrity of the entire software development lifecycle. The vulnerability aligns with CWE-79 which addresses cross-site scripting flaws and potentially maps to ATT&CK technique T1203 for legitimate program execution and T1059 for command and scripting interpreter usage.
Organizations using affected Tuleap versions should immediately implement the provided patches and updates to remediate this vulnerability. The fix included in versions 15.2.99.103 for Community Edition and 15.2-4/15.1-8 for Enterprise Edition properly implements input sanitization and output escaping mechanisms for release names. Security teams should also implement additional monitoring for unusual release creation activities and consider implementing network segmentation to limit the potential impact of successful exploitation. Regular security assessments of the FRS component and comprehensive input validation reviews should be conducted to prevent similar vulnerabilities in the future.