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Gentoo: GLSA-202402-32 Normal: btrbk Remote Code Execution

gentoo
Calendar Grey February 26, 2024
Dist Gentoo Esm H88
An exploit in ztrbk may allow for remote control. Update now to resolve. Fix has been released. Immediate action required.
A vulnerability has been discovered in btrbk which can lead to remote code execution.

Summary

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

Topics%20covered

Topics Covered

security advisory Gentoo remote execution security patch normal severity btrbk

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
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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.

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

Topics%20covered

Topics Covered

security advisory Gentoo remote execution security patch normal severity btrbk

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.

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Affected Packages

Package Vulnerable Unaffected ---------------- ------------ ------------ app-backup/btrbk < 0.31.2 >= 0.31.2

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.

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