Selfhosted

40652 readers

236 users here now

A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.

Rules:

Be civil: we're here to support and learn from one another. Insults won't be tolerated. Flame wars are frowned upon.
No spam posting.
Posts have to be centered around self-hosting. There are other communities for discussing hardware or home computing. If it's not obvious why your post topic revolves around selfhosting, please include details to make it clear.
Don't duplicate the full text of your blog or github here. Just post the link for folks to click.
Submission headline should match the article title (don’t cherry-pick information from the title to fit your agenda).
No trolling.

Resources:

selfh.st Newsletter and index of selfhosted software and apps
awesome-selfhosted software
awesome-sysadmin resources
Self-Hosted Podcast from Jupiter Broadcasting

Any issues on the community? Report it using the report flag.

Questions? DM the mods!

founded 2 years ago

MODERATORS

168

PSA: Update your docker installation. Leaky Vessels flaws allow hackers to escape Docker, runc containers (www.bleepingcomputer.com)

submitted 10 months ago by [email protected] to c/selfhosted

16 comments fedilink hide all child comments

Snyk team has found four vulnerabilities collectively called "Leaky Vessels" that impact the runc and Buildkit container infrastructure and build tools, potentially allowing attackers to perform container escape on various software products.

On January 31, 2024, Buildkit fixed the flaws with version 0.12.5, and runc addressed the security issue impacting it on version 1.1.12.

Docker released version 4.27.0 on the same day, incorporating the secured versions of the components in its Moby engine, with versions 25.0.1 and 24.0.8.

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 2 points 10 months ago (1 children)

Don't run docker, so far it has proven quite insecure, and that was by design at first because docker was created for development environments and not for deployment.

Later docker added better security, because they understood the value in deployment too. But many distro are still insecure by default and it takes both the effort of sysadmins and image developers to deploy securely docker containers.

I switched to Podman: no daemon, no socket, no root operations out of the box. And the transition is basically seamless too.

[–] [email protected] 4 points 10 months ago* (last edited 10 months ago) (2 children)

I believe podman and containerd use runc under the hood so they're also affected by this container escape vulnerability. You should update it to the latest version.

[–] [email protected] 1 points 10 months ago (1 children)

Podman can use different tools under the hood, will check which one I am using.

[–] [email protected] 1 points 10 months ago

I think on redhat/fedora it uses runc by default and on debian/arch it uses crun by default.