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Gentoo Linux Security Advisory 202402-32

Gentoo Linux Security Advisory 202402-32 - A vulnerability has been discovered in btrbk which can lead to remote code execution. Versions greater than or equal to 0.31.2 are affected.

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Gentoo Linux Security Advisory GLSA 202402-32

                                       https://security.gentoo.org/

Severity: Normal
Title: btrbk: Remote Code Execution
Date: February 26, 2024
Bugs: #806962
ID: 202402-32

Synopsis

A vulnerability has been discovered in btrbk which can lead to remote
code execution.

Background

btrbk is a backup tool for btrfs subvolumes, taking advantage of btrfs
specific capabilities to create atomic snapshots and transfer them
incrementally to your backup locations.

Affected packages

Package Vulnerable Unaffected

app-backup/btrbk < 0.31.2 >= 0.31.2

Description

A vulnerability has been discovered in btrbk. Please review the CVE
identifier referenced below for details.

Impact

Specialy crafted commands may be executed without being propely checked.
Applies to remote hosts filtering ssh commands using ssh_filter_btrbk.sh
in authorized_keys.

Workaround

There is no known workaround at this time.

Resolution

All btrbk users should upgrade to the latest version:

emerge --sync

emerge --ask --oneshot --verbose “>=app-backup/btrbk-0.31.2”

References

[ 1 ] CVE-2021-38173
https://nvd.nist.gov/vuln/detail/CVE-2021-38173

Availability

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

https://security.gentoo.org/glsa/202402-32

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users’ machines is of utmost
importance to us. Any security concerns should be addressed to
[email protected] or alternatively, you may file a bug at
https://bugs.gentoo.org.