Input validation error in MantisBT - CVE-2018-9839
Published: June 6, 2019 / Updated: August 8, 2020
Vulnerability identifier: #VU35847
CSH Severity: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2018-9839
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
MantisBT
MantisBT
Software vendor:
mantisbt.sourceforge.net
mantisbt.sourceforge.net
Description
The vulnerability allows a remote authenticated user to gain access to sensitive information.
An issue was discovered in MantisBT through 1.3.14, and 2.0.0. Using a crafted request on bug_report_page.php (modifying the 'm_id' parameter), any user with REPORTER access or above is able to view any private issue's details (summary, description, steps to reproduce, additional information) when cloning it. By checking the 'Copy issue notes' and 'Copy attachments' checkboxes and completing the clone operation, this data also becomes public (except private notes).
Remediation
Install update from vendor's website.