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Bug 2043479 - execute bit of /usr/share/btrbk/scripts/ssh_filter_btrbk.sh was removed
Summary: execute bit of /usr/share/btrbk/scripts/ssh_filter_btrbk.sh was removed
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: btrbk
Version: 35
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: ---
Assignee: Juan Orti
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2022-01-21 10:21 UTC by Sjoerd Mullender
Modified: 2022-01-29 06:38 UTC (History)
3 users (show)

Fixed In Version: btrbk-0.31.3-3.fc35
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2022-01-29 06:38:35 UTC
Type: Bug
Embargoed:

Attachments (Terms of Use)

Description Sjoerd Mullender 2022-01-21 10:21:20 UTC 
Description of problem:
In the latest version of btrbk (0.31.3-1) the execute bits of the scripts in /usr/share/btrbk/scripts were removed as a response to a security issue.
As a result of this, creating remote backups using btrbk using the advertised method of securing the remote command using ssh_filter_btrbk.sh is no longer possible.
My question, how is it safer not being able to create a remote backup vs. a fixed remote execution bug?
In other words, please reinstate the execute bit of this script.

Version-Release number of selected component (if applicable):
btrbk-0.31.3-1

How reproducible:
100%

Steps to Reproduce:
1.create btrbk config, and add a command in your root's .ssh/authorized_keys file.
2.try to use btrbk to remotely copy a backup
3.

Actual results:
ERROR: Failed to fetch subvolume detail for '<hostname>:<directory>'
ERROR: ... Command execution failed (exitcode=126)
ERROR: ... sh: ssh -i /etc/btrbk/ssh/id_rsa root@<hostname> 'readlink -v -e <directory>'
ERROR: ... bash: line 1: /usr/share/btrbk/scripts/ssh_filter_btrbk.sh: Permission denied

Expected results:
No error.

Additional info:
See bugs 1994988 1994989 (I can only read the public parts)
Comment 1 Juan Orti 2022-01-21 11:54:16 UTC 
My bad, I misunderstood the other bug reports. I'll send an update ASAP.
Comment 2 Fedora Update System 2022-01-21 12:10:45 UTC 
FEDORA-2022-c844d2edcc has been submitted as an update to Fedora 35. https://bodhi.fedoraproject.org/updates/FEDORA-2022-c844d2edcc
Comment 3 Fedora Update System 2022-01-21 12:11:29 UTC 
FEDORA-2022-cf2784607b has been submitted as an update to Fedora 34. https://bodhi.fedoraproject.org/updates/FEDORA-2022-cf2784607b
Comment 4 Sjoerd Mullender 2022-01-21 12:36:52 UTC 
Thanks for the quick response.
Comment 5 Fedora Update System 2022-01-22 01:21:46 UTC 
FEDORA-2022-cf2784607b has been pushed to the Fedora 34 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2022-cf2784607b`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2022-cf2784607b

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
Comment 6 Fedora Update System 2022-01-22 02:08:26 UTC 
FEDORA-2022-c844d2edcc has been pushed to the Fedora 35 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --advisory=FEDORA-2022-c844d2edcc`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2022-c844d2edcc

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
Comment 7 Fedora Update System 2022-01-29 06:32:35 UTC 
FEDORA-2022-cf2784607b has been pushed to the Fedora 34 stable repository.
If problem still persists, please make note of it in this bug report.
Comment 8 Fedora Update System 2022-01-29 06:38:35 UTC 
FEDORA-2022-c844d2edcc has been pushed to the Fedora 35 stable repository.
If problem still persists, please make note of it in this bug report.
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