GLSA 202402-32: btrbk: Remote Code Execution

http://security.gentoo.org/

Severity:	normal
Title:	btrbk: Remote Code Execution
Date:	02/26/2024
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	Architecture(s)
app-backup/btrbk	< 0.31.2	>= 0.31.2	All supported architectures

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

CVE-2021-38173

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-202402-32.xml

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 security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.