CVE-2021-37156 Security feature bypass in n/a

High 7.5 Published 5 Aug 2021 Updated 4 Aug 2024

Enabling two-factor authentication fails to terminate existing user sessions, allowing attackers to bypass the new security control.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2021-37156?

CVE-2021-37156 is a high-severity vulnerability in Redmine Redmine, published on 5 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Redmine 4.2.0 and 4.2.1 allow existing user sessions to continue upon enabling two-factor authentication for the user's account, but the intended behavior is for those sessions to be terminated.

Weakness: CWE-613

Which versions are affected by CVE-2021-37156?

1 open source package ship an affected version, including redmine. It affects 1 product.

Package	Affected	Fixed in
`redmine` Bitnami	From `4.2.0`	`4.2.1, 4.2.2`

Products include Redmine Redmine.

How do I fix CVE-2021-37156?

Upgrade redmine to a fixed version for your release line: 4.2.1 or 4.2.2.

Is CVE-2021-37156 being exploited?

There is no known exploitation of CVE-2021-37156 in the wild and no public exploit code.

All Redmine Redmine vulnerabilities

Sources

Also known as BIT-redmine-2021-37156, GHSA-ghph-4rfg-4x3f, UBUNTU-CVE-2021-37156.