CVE-2021-38173

Published on: 08/07/2021 12:00:00 AM UTC

Last Modified on: 09/14/2021 06:52:00 PM UTC

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Certain versions of Debian Linux from Debian contain the following vulnerability:

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.

  • CVE-2021-38173 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as CRITICAL severity.

CVSS3 Score: 9.8 - CRITICAL

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
NETWORK LOW NONE NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED HIGH HIGH HIGH

CVSS2 Score: 7.5 - HIGH

Access
Vector
Access
Complexity
Authentication
NETWORK LOW NONE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
PARTIAL PARTIAL PARTIAL

CVE References

Description Tags Link
btrbk/ChangeLog at master · digint/btrbk · GitHub github.com
text/html
URL Logo CONFIRM github.com/digint/btrbk/blob/master/ChangeLog
[SECURITY] [DLA 2755-1] btrbk security update lists.debian.org
text/html
URL Logo MLIST [debian-lts-announce] 20210905 [SECURITY] [DLA 2755-1] btrbk security update
ssh_filter_btrbk.sh: fix alternation regex · digint/[email protected] · GitHub github.com
text/html
URL Logo MISC github.com/digint/btrbk/commit/58212de771c381cd4fa05625927080bf264e9584

Related QID Numbers

  • 178785 Debian Security Update for btrbk (DLA 2755-1)

Exploit/POC from Github

PoC for exploiting CVE-2021-38173 : Btrbk before 0.31.2 allows command execution because of the mishandling of remote…

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
Operating
System
DebianDebian Linux9.0AllAllAll
ApplicationDigintBtrbkAllAllAllAll
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*:
  • cpe:2.3:a:digint:btrbk:*:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2021-38173 : Btrbk before 0.31.2 allows command execution because of the mishandling of remote hosts filtering… twitter.com/i/web/status/1… 2021-08-07 19:03:30
Twitter Icon @threatmeter CVE-2021-38173 Btrbk before 0.31.2 allows command execution because of the mishandling of remote hosts filtering SS… twitter.com/i/web/status/1… 2021-08-08 07:09:29
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