CVE-2021-42072 Auth bypass in n/a
Barrier server fails to verify client identity, allowing attackers to cause denial of service or leak and corrupt data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-42072?
CVE-2021-42072 is a high-severity authentication bypass vulnerability in Fedoraproject Fedora, published on 8 Nov 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An issue was discovered in Barrier before 2.4.0. The barriers component (aka the server-side implementation of Barrier) does not sufficiently verify the identify of connecting clients. Clients can thus exploit weaknesses in the provided protocol to cause denial-of-service or stage further attacks that could lead to information leaks or integrity corruption.
Weakness: CWE-287
Which versions are affected by CVE-2021-42072?
It affects 2 products.
Products include Barrier Project Barrier, Fedoraproject Fedora.
How do I fix CVE-2021-42072?
Upgrade to a fixed version.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2021-42072 being exploited?
There is no known exploitation of CVE-2021-42072 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as GHSA-wvmp-5fvm-29ff.