Information disclosure in Redmine - CVE-2021-31866
Published: May 4, 2021
Vulnerability identifier: #VU52846
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-31866
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application. A remote attacker can learn the values of internal authentication keys by observing timing differences in string comparison operations within SysController and MailHandlerController.
Affected software
Redmine
How to mitigate CVE-2021-31866
Install updates from vendor's website.
Redmine - addressed in versions 4.0.9, 4.1.3