Critical severity9.8NVD Advisory· Published Aug 7, 2021· Updated Jun 17, 2026

CVE-2021-38173

Description

Btrbk before 0.31.2 allows command execution because of the mishandling of remote hosts filtering SSH commands using ssh_filter_btrbk.sh in authorized_keys.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Btrbk/Btrbkdescription
Digint/Btrbk
cpe:2.3:a:digint:btrbk:*:*:*:*:*:*:*:*
Range: <0.31.2
Debian/linux
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Fedoraproject/Fedora2 versions
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
Btrbk/btrbkllm-create
Range: <0.31.2

Patches

Vulnerability mechanics

References

github.com/digint/btrbk/commit/58212de771c381cd4fa05625927080bf264e9584nvdPatchThird Party Advisory
github.com/digint/btrbk/blob/master/ChangeLognvdRelease NotesThird Party Advisory
lists.debian.org/debian-lts-announce/2021/09/msg00002.htmlnvdMailing ListThird Party Advisory
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BP2T32JMENJFRP2HWXR7FTTZVRTTPECL/nvd
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LM7GLTUN5YS4KE2RNBX732EAMVVGNEX3/nvd

News mentions

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cvss	0.637
epss	0.003
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000