Bug 1994988 (CVE-2021-38173)

Summary:	CVE-2021-38173 btrbk: remote execution in ssh_filter_btrbk.sh
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	igor.raits, mike
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-08-18 13:28:38 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1994989, 1994990
Bug Blocks:

Description Marian Rehak 2021-08-18 09:17:50 UTC

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.

https://github.com/digint/btrbk/commit/58212de771c381cd4fa05625927080bf264e9584
https://github.com/digint/btrbk/blob/master/ChangeLog

Comment 1 Marian Rehak 2021-08-18 09:18:38 UTC

Created btrbk tracking bugs for this issue:

Affects: epel-7 [bug 1994990]
Affects: fedora-all [bug 1994989]

Comment 2 Product Security DevOps Team 2021-08-18 13:28:38 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.