UBUNTU-CVE-2021-41617

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Source
https://ubuntu.com/security/notices/UBUNTU-CVE-2021-41617
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-41617.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-41617
Related
Published
2021-09-26T19:15:00Z
Modified
2021-09-26T19:15:00Z
Severity
  • 7.0 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

sshd in OpenSSH 6.2 through 8.x before 8.8, when certain non-default configurations are used, allows privilege escalation because supplemental groups are not initialized as expected. Helper programs for AuthorizedKeysCommand and AuthorizedPrincipalsCommand may run with privileges associated with group memberships of the sshd process, if the configuration specifies running the command as a different user.

References

Affected packages

Ubuntu:Pro:14.04:LTS / openssh

Package

Name
openssh

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1:6.*

1:6.2p2-6
1:6.2p2-6ubuntu1
1:6.4p1-1
1:6.4p1-2
1:6.5p1-1
1:6.5p1-2
1:6.5p1-3
1:6.5p1-4
1:6.5p1-6
1:6.6p1-1
1:6.6p1-2
1:6.6p1-2ubuntu1
1:6.6p1-2ubuntu2
1:6.6p1-2ubuntu2.2
1:6.6p1-2ubuntu2.3
1:6.6p1-2ubuntu2.4
1:6.6p1-2ubuntu2.6
1:6.6p1-2ubuntu2.7
1:6.6p1-2ubuntu2.8
1:6.6p1-2ubuntu2.10
1:6.6p1-2ubuntu2.11
1:6.6p1-2ubuntu2.12
1:6.6p1-2ubuntu2.13
1:6.6p1-2ubuntu2.13+esm1
1:6.6p1-2ubuntu2.13+esm2

Ecosystem specific 

{
    "ubuntu_priority": "low",
    "priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
}

Ubuntu:Pro:16.04:LTS / openssh

Package

Name
openssh
Purl
pkg:deb/ubuntu/openssh@1:7.2p2-4ubuntu2.10+esm2?arch=src?distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:7.2p2-4ubuntu2.10+esm2

Affected versions

1:6.*

1:6.9p1-2
1:6.9p1-3

1:7.*

1:7.1p1-1
1:7.1p1-3
1:7.1p1-4
1:7.1p1-6
1:7.1p2-1
1:7.1p2-2
1:7.2p1-1
1:7.2p2-1
1:7.2p2-2
1:7.2p2-3
1:7.2p2-4
1:7.2p2-4ubuntu1
1:7.2p2-4ubuntu2.1
1:7.2p2-4ubuntu2.2
1:7.2p2-4ubuntu2.4
1:7.2p2-4ubuntu2.5
1:7.2p2-4ubuntu2.6
1:7.2p2-4ubuntu2.7
1:7.2p2-4ubuntu2.8
1:7.2p2-4ubuntu2.10
1:7.2p2-4ubuntu2.10+esm1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "openssh-client-ssh1-dbgsym": "1:7.2p2-4ubuntu2.10+esm2",
            "ssh-askpass-gnome-dbgsym": "1:7.2p2-4ubuntu2.10+esm2",
            "ssh-askpass-gnome": "1:7.2p2-4ubuntu2.10+esm2",
            "openssh-client-udeb-dbgsym": "1:7.2p2-4ubuntu2.10+esm2",
            "openssh-client-ssh1": "1:7.2p2-4ubuntu2.10+esm2",
            "openssh-client-udeb": "1:7.2p2-4ubuntu2.10+esm2",
            "ssh-krb5": "1:7.2p2-4ubuntu2.10+esm2",
            "openssh-server-udeb-dbgsym": "1:7.2p2-4ubuntu2.10+esm2",
            "openssh-client": "1:7.2p2-4ubuntu2.10+esm2",
            "openssh-sftp-server": "1:7.2p2-4ubuntu2.10+esm2",
            "openssh-sftp-server-dbgsym": "1:7.2p2-4ubuntu2.10+esm2",
            "openssh-server": "1:7.2p2-4ubuntu2.10+esm2",
            "openssh-server-udeb": "1:7.2p2-4ubuntu2.10+esm2",
            "openssh-server-dbgsym": "1:7.2p2-4ubuntu2.10+esm2",
            "ssh": "1:7.2p2-4ubuntu2.10+esm2",
            "openssh-client-dbgsym": "1:7.2p2-4ubuntu2.10+esm2"
        }
    ],
    "priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
}

Ubuntu:Pro:18.04:LTS / openssh

Package

Name
openssh

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1:7.*

1:7.5p1-10
1:7.6p1-4
1:7.6p1-4ubuntu0.1
1:7.6p1-4ubuntu0.2
1:7.6p1-4ubuntu0.3
1:7.6p1-4ubuntu0.5
1:7.6p1-4ubuntu0.6
1:7.6p1-4ubuntu0.7
1:7.6p1-4ubuntu0.7+esm1
1:7.6p1-4ubuntu0.7+esm2
1:7.6p1-4ubuntu0.7+esm3

Ecosystem specific 

{
    "ubuntu_priority": "low",
    "priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
}

Ubuntu:Pro:18.04:LTS / openssh-ssh1

Package

Name
openssh-ssh1

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1:7.*

1:7.5p1-8
1:7.5p1-9
1:7.5p1-9build1
1:7.5p1-10

Ecosystem specific 

{
    "ubuntu_priority": "low",
    "priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
}

Ubuntu:20.04:LTS / openssh

Package

Name
openssh
Purl
pkg:deb/ubuntu/openssh@1:8.2p1-4ubuntu0.11?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:8.2p1-4ubuntu0.11

Affected versions

1:8.*

1:8.0p1-6build1
1:8.1p1-1
1:8.1p1-5
1:8.2p1-4
1:8.2p1-4ubuntu0.1
1:8.2p1-4ubuntu0.2
1:8.2p1-4ubuntu0.3
1:8.2p1-4ubuntu0.4
1:8.2p1-4ubuntu0.5
1:8.2p1-4ubuntu0.7
1:8.2p1-4ubuntu0.8
1:8.2p1-4ubuntu0.9
1:8.2p1-4ubuntu0.10

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "openssh-client": "1:8.2p1-4ubuntu0.11",
            "ssh-askpass-gnome-dbgsym": "1:8.2p1-4ubuntu0.11",
            "openssh-tests": "1:8.2p1-4ubuntu0.11",
            "openssh-sftp-server-dbgsym": "1:8.2p1-4ubuntu0.11",
            "ssh-askpass-gnome": "1:8.2p1-4ubuntu0.11",
            "openssh-sftp-server": "1:8.2p1-4ubuntu0.11",
            "openssh-tests-dbgsym": "1:8.2p1-4ubuntu0.11",
            "openssh-server-udeb": "1:8.2p1-4ubuntu0.11",
            "openssh-server": "1:8.2p1-4ubuntu0.11",
            "openssh-server-dbgsym": "1:8.2p1-4ubuntu0.11",
            "openssh-client-udeb": "1:8.2p1-4ubuntu0.11",
            "ssh": "1:8.2p1-4ubuntu0.11",
            "openssh-client-dbgsym": "1:8.2p1-4ubuntu0.11"
        }
    ],
    "priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
}

Ubuntu:20.04:LTS / openssh-ssh1

Package

Name
openssh-ssh1

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1:7.*

1:7.5p1-11build1

Ecosystem specific 

{
    "ubuntu_priority": "low",
    "priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
}

Ubuntu:22.04:LTS / openssh

Package

Name
openssh
Purl
pkg:deb/ubuntu/openssh@1:8.9p1-3?arch=src?distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:8.9p1-3

Affected versions

1:8.*

1:8.4p1-6ubuntu2
1:8.7p1-2
1:8.7p1-2build1
1:8.7p1-4
1:8.8p1-1

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "openssh-client": "1:8.9p1-3",
            "ssh-askpass-gnome-dbgsym": "1:8.9p1-3",
            "openssh-tests": "1:8.9p1-3",
            "openssh-sftp-server-dbgsym": "1:8.9p1-3",
            "ssh-askpass-gnome": "1:8.9p1-3",
            "openssh-sftp-server": "1:8.9p1-3",
            "openssh-server": "1:8.9p1-3",
            "openssh-tests-dbgsym": "1:8.9p1-3",
            "openssh-server-dbgsym": "1:8.9p1-3",
            "ssh": "1:8.9p1-3",
            "openssh-client-dbgsym": "1:8.9p1-3"
        }
    ],
    "priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
}

Ubuntu:22.04:LTS / openssh-ssh1

Package

Name
openssh-ssh1

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1:7.*

1:7.5p1-12
1:7.5p1-12build1
1:7.5p1-13

Ecosystem specific 

{
    "ubuntu_priority": "low",
    "priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
}

Ubuntu:24.04:LTS / openssh-ssh1

Package

Name
openssh-ssh1

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1:7.*

1:7.5p1-14
1:7.5p1-15
1:7.5p1-15build1
1:7.5p1-16

Ecosystem specific 

{
    "ubuntu_priority": "low",
    "priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
}