USN-9049-1

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/notices/USN-9049-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-9049-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-9049-1
Upstream
Related
Published
2026-11-11T18:31:40Z
Modified
2026-11-12T17:29:22Z
Summary
btrbk vulnerability
Details

It was discovered that btrbk incorrectly filtered SSH commands received from remote hosts. A remote attacker could possibly use this issue to execute arbitrary commands.

References

Affected packages

Ubuntu:Pro:18.04:LTS / btrbk

Package

Name
btrbk
Purl
pkg:deb/ubuntu/btrbk?arch=source&distro=esm-apps%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.26.0-1ubuntu0.1~esm1

Affected versions

0.*
0.25.1-1
0.26.0-1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "btrbk",
            "binary_version": "0.26.0-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [
        {
            "id": "CVE-2021-38173",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:18.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-9049-1.json"

Ubuntu:Pro:20.04:LTS / btrbk

Package

Name
btrbk
Purl
pkg:deb/ubuntu/btrbk?arch=source&distro=esm-apps%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.27.1-1ubuntu0.1~esm1

Affected versions

0.*
0.27.1-1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "btrbk",
            "binary_version": "0.27.1-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

cves_map 
{
    "cves": [
        {
            "id": "CVE-2021-38173",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:20.04:LTS"
}
source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-9049-1.json"