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Submission + - Landrun 0.1.17 Adds Landlock ABI v9 and Easier Linux Sandboxing (github.com)

Submitted by Zoup
Zoup writes: Version 0.1.17 now supports Landlock ABI v9, including IPC scoping, per-path UNIX socket access and audit logging controls. New --add-exec and --ldd options automatically include the target executable and its recursive ELF dependencies, making usable policies considerably less tedious.

It still requires no root, containers, daemon or SELinux/AppArmor configuration. and landrun is now available through Debian, Ubuntu, AUR and Slackware.

MIT licensed and written in Go:
https://ancillary-proxy.atarimworker.io?url=https%3A%2F%2Fgithub.com%2Fzouuup%2Fland...

Comment Re:I'd love to use it but dependencies scare me (Score 1) 40

by Zoup (#65284023) Attached to: 'Landrun': Lightweight Linux Sandboxing With Landlock, No Root Required
my pleasure! thank you for having a look. Also agreed with points on supply chain, specially when it comes to NPM, PYPY stuff. I don't think OSS Distro package maintainers really have the time to go through the source before pushing package tho... this will only get worse with AI generated codes and explosion of number of packages. Should we all go "Ubuntu Pro"? they simply don't have the resources to package/review at this pace. the only thing I can think of is for likes of github to implement reliable AI safeguards against supply chain attacks, and that's (at least) is not the immediate future...

Comment Re:I'd love to use it but dependencies scare me (Score 3, Interesting) 40

by Zoup (#65283953) Attached to: 'Landrun': Lightweight Linux Sandboxing With Landlock, No Root Required

It always annoyed the hell out of me to run random binaries from the internet without any real control over what they can access.

Totally agree! But when I tried to build landrun it downloads code from several github accounts. Random dependencies from the internet are a worse security risk than what it is trying to solve. I'd sandbox Firefox (the only binary to be an obvious entry point for hackers on a typical desktop machine). But for this I need to trust that none of the github accounts "russross", "urfave", "cpuguy83" or "xrash" on github have been compromised by hackers (unlikely but not impossible), and therefore increases the attack surface.

go build -o landrun cmd/landrun/main.go

go: downloading github.com/urfave/cli/v2 v2.27.6 go: downloading github.com/landlock-lsm/go-landlock v0.0.0-20250303204525-1544bccde3a3 go: downloading kernel.org/pub/linux/libs/security/libcap/psx v1.2.70 go: downloading golang.org/x/sys v0.26.0 go: downloading github.com/cpuguy83/go-md2man/v2 v2.0.5 go: downloading github.com/xrash/smetrics v0.0.0-20240521201337-686a1a2994c1 go: downloading github.com/russross/blackfriday/v2 v2.1.0

Yeah agreed, the "Supply chain" problem of OSS will bite us in the ass someday, although if you are willing to trust me, you should definitely trust likes of unfave! :)

Comment Re:Ok, but... (Score 0) 40

by Zoup (#65283947) Attached to: 'Landrun': Lightweight Linux Sandboxing With Landlock, No Root Required

... it is a little ironic that the README.md for a tool that is supposed to help mitigate the risk of running software from a random source on the Internet tells me to `go install github.com/zouuup/landrun/cmd/landrun@latest` ... that's a little like those VPN advertisers telling me "don't trust anyone... only trust us!".

Ahem, go install builds from source, so you're not trusting a binary. That said... you can always run landrun in landrun.

Submission + - Landrun: Lightweight Linux Sandboxing with Landlock, No Root Required (github.com) 1

Submitted by Zoup
Zoup writes: I just released landrun, a Go-based CLI tool that wraps Linux Landlock (5.13+) to sandbox any process without root, containers, or seccomp. Think firejail, but minimal and kernel-native. Supports fine-grained file access (ro/rw/exec) and TCP port restrictions (6.7+). No daemons, no YAML, just flags.

Example:
# landrun --rox /usr touch /tmp/file
touch: cannot touch '/tmp/file': Permission denied
# landrun --rox /usr --rw /tmp touch /tmp/file
#

It's MIT-licensed, easy to audit, and now supports systemd services.

Submission + - Landrun: CLI tool to sandbox processes using Landlock, no containers, no root (github.com) 1

Submitted by Zoup
Zoup writes: Hey folks, I built a CLI tool called landrun that uses the Linux Landlock LSM to sandbox commands without needing containers or root. You can define what paths a command can read or write to, and everything else is blocked by the kernel:

# landrun --rox /usr touch /tmp/file
touch: cannot touch '/tmp/file': Permission denied
# landrun --ro /xusr --rw /tmp touch /tmp/file
#

Why does this matter? Landlock is a Linux Security Module (LSM) that lets unprivileged processes restrict themselves. It's been in the kernel since 5.13, but the API is awkward to use directly. It always annoyed the hell out of me to run random binaries from the internet without any real control over what they can access. Features: Works with any CLI command Secure-by-default: deny all, allow only specified paths No root, no special privileges required More convenient than selinux, apparmor, etc Written in Go, small and fast GitHub: https://ancillary-proxy.atarimworker.io?url=https%3A%2F%2Fgithub.com%2FZouuup%2Fland...

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