ALBA-2022:0349 clevis bug fix and enhancement update
Clevis hangs during boot requiring user interaction, causing a denial of service in automated decryption scenarios.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is ALBA-2022:0349?
ALBA-2022:0349 is a denial of service vulnerability in clevis, published on 1 Feb 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
Clevis is a pluggable framework for automated decryption. It can be used to provide automated decryption of data or even automated unlocking of LUKS volumes. The clevis packages provide the client side of the Network Bound Disk Encryption (NBDE) project.
Bug Fix(es) and Enhancement(s):
- Server hangs in asking password unless user hits enter in clevis/dracut (BZ#2023256)
Which versions are affected by ALBA-2022:0349?
Linux distribution packages (5)
clevis AlmaLinux:8 | All versions | 15-1.el8_5.1 |
clevis-dracut AlmaLinux:8 | All versions | 15-1.el8_5.1 |
clevis-luks AlmaLinux:8 | All versions | 15-1.el8_5.1 |
clevis-systemd AlmaLinux:8 | All versions | 15-1.el8_5.1 |
clevis-udisks2 AlmaLinux:8 | All versions | 15-1.el8_5.1 |
How do I fix ALBA-2022:0349?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is ALBA-2022:0349 being exploited?
There is no known exploitation of ALBA-2022:0349 in the wild and no public exploit code.