ubuntu-cve-2021-41617
Vulnerability from osv_ubuntu
Published
2021-09-26 19:15
Modified
2026-05-20 14:53
Summary
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.
Severity
7.0 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "openssh-client",
"binary_version": "1:6.6p1-2ubuntu2.13+esm2"
},
{
"binary_name": "openssh-server",
"binary_version": "1:6.6p1-2ubuntu2.13+esm2"
},
{
"binary_name": "openssh-sftp-server",
"binary_version": "1:6.6p1-2ubuntu2.13+esm2"
},
{
"binary_name": "ssh",
"binary_version": "1:6.6p1-2ubuntu2.13+esm2"
},
{
"binary_name": "ssh-askpass-gnome",
"binary_version": "1:6.6p1-2ubuntu2.13+esm2"
},
{
"binary_name": "ssh-krb5",
"binary_version": "1:6.6p1-2ubuntu2.13+esm2"
}
],
"priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
},
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "openssh",
"purl": "pkg:deb/ubuntu/openssh@1:6.6p1-2ubuntu2.13+esm2?arch=source\u0026distro=esm-infra-legacy/trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "openssh-client",
"binary_version": "1:7.2p2-4ubuntu2.10+esm2"
},
{
"binary_name": "openssh-client-ssh1",
"binary_version": "1:7.2p2-4ubuntu2.10+esm2"
},
{
"binary_name": "openssh-server",
"binary_version": "1:7.2p2-4ubuntu2.10+esm2"
},
{
"binary_name": "openssh-sftp-server",
"binary_version": "1:7.2p2-4ubuntu2.10+esm2"
},
{
"binary_name": "ssh",
"binary_version": "1:7.2p2-4ubuntu2.10+esm2"
},
{
"binary_name": "ssh-askpass-gnome",
"binary_version": "1:7.2p2-4ubuntu2.10+esm2"
},
{
"binary_name": "ssh-krb5",
"binary_version": "1:7.2p2-4ubuntu2.10+esm2"
}
],
"priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "openssh",
"purl": "pkg:deb/ubuntu/openssh@1:7.2p2-4ubuntu2.10+esm2?arch=source\u0026distro=esm-infra/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:7.2p2-4ubuntu2.10+esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:6.9p1-2",
"1:6.9p1-3",
"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: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "openssh-client",
"binary_version": "1:7.2p2-4ubuntu2.fips.2.10.3"
},
{
"binary_name": "openssh-client-hmac",
"binary_version": "1:7.2p2-4ubuntu2.fips.2.10.3"
},
{
"binary_name": "openssh-client-ssh1",
"binary_version": "1:7.2p2-4ubuntu2.fips.2.10.3"
},
{
"binary_name": "openssh-server",
"binary_version": "1:7.2p2-4ubuntu2.fips.2.10.3"
},
{
"binary_name": "openssh-server-hmac",
"binary_version": "1:7.2p2-4ubuntu2.fips.2.10.3"
},
{
"binary_name": "openssh-sftp-server",
"binary_version": "1:7.2p2-4ubuntu2.fips.2.10.3"
},
{
"binary_name": "ssh",
"binary_version": "1:7.2p2-4ubuntu2.fips.2.10.3"
},
{
"binary_name": "ssh-askpass-gnome",
"binary_version": "1:7.2p2-4ubuntu2.fips.2.10.3"
},
{
"binary_name": "ssh-krb5",
"binary_version": "1:7.2p2-4ubuntu2.fips.2.10.3"
}
],
"priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
},
"package": {
"ecosystem": "Ubuntu:Pro:FIPS:16.04:LTS",
"name": "openssh",
"purl": "pkg:deb/ubuntu/openssh@1:7.2p2-4ubuntu2.fips.2.10.3?arch=source\u0026distro=fips-updates/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:7.2p2-4ubuntu2.fips.2.10.3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:7.2p2-4ubuntu2.fips.2.2.3",
"1:7.2p2-4ubuntu2.fips.2.4.1",
"1:7.2p2-4ubuntu2.fips.2.4.2",
"1:7.2p2-4ubuntu2.fips.2.8.1",
"1:7.2p2-4ubuntu2.fips.2.10.1",
"1:7.2p2-4ubuntu2.fips.2.10.2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "openssh-client",
"binary_version": "1:7.2p2-4ubuntu2.fips.2.10.1"
},
{
"binary_name": "openssh-client-hmac",
"binary_version": "1:7.2p2-4ubuntu2.fips.2.10.1"
},
{
"binary_name": "openssh-client-ssh1",
"binary_version": "1:7.2p2-4ubuntu2.fips.2.10.1"
},
{
"binary_name": "openssh-server",
"binary_version": "1:7.2p2-4ubuntu2.fips.2.10.1"
},
{
"binary_name": "openssh-server-hmac",
"binary_version": "1:7.2p2-4ubuntu2.fips.2.10.1"
},
{
"binary_name": "openssh-sftp-server",
"binary_version": "1:7.2p2-4ubuntu2.fips.2.10.1"
},
{
"binary_name": "ssh",
"binary_version": "1:7.2p2-4ubuntu2.fips.2.10.1"
},
{
"binary_name": "ssh-askpass-gnome",
"binary_version": "1:7.2p2-4ubuntu2.fips.2.10.1"
},
{
"binary_name": "ssh-krb5",
"binary_version": "1:7.2p2-4ubuntu2.fips.2.10.1"
}
],
"priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
},
"package": {
"ecosystem": "Ubuntu:Pro:FIPS:16.04:LTS",
"name": "openssh",
"purl": "pkg:deb/ubuntu/openssh@1:7.2p2-4ubuntu2.fips.2.10.1?arch=source\u0026distro=fips/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:7.2p2-4ubuntu2.fips.2.2",
"1:7.2p2-4ubuntu2.fips.2.2.1",
"1:7.2p2-4ubuntu2.fips.2.10.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "openssh-client",
"binary_version": "1:7.6p1-4ubuntu0.7+esm4"
},
{
"binary_name": "openssh-server",
"binary_version": "1:7.6p1-4ubuntu0.7+esm4"
},
{
"binary_name": "openssh-sftp-server",
"binary_version": "1:7.6p1-4ubuntu0.7+esm4"
},
{
"binary_name": "ssh",
"binary_version": "1:7.6p1-4ubuntu0.7+esm4"
},
{
"binary_name": "ssh-askpass-gnome",
"binary_version": "1:7.6p1-4ubuntu0.7+esm4"
}
],
"priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "openssh",
"purl": "pkg:deb/ubuntu/openssh@1:7.6p1-4ubuntu0.7+esm4?arch=source\u0026distro=esm-infra/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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",
"1:7.6p1-4ubuntu0.7+esm4"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "openssh-client-ssh1",
"binary_version": "1:7.5p1-10"
}
],
"priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "openssh-ssh1",
"purl": "pkg:deb/ubuntu/openssh-ssh1@1:7.5p1-10?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:7.5p1-8",
"1:7.5p1-9",
"1:7.5p1-9build1",
"1:7.5p1-10"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "openssh-client",
"binary_version": "1:7.9p1-10~ubuntu18.04.fips.0.10"
},
{
"binary_name": "openssh-client-hmac",
"binary_version": "1:7.9p1-10~ubuntu18.04.fips.0.10"
},
{
"binary_name": "openssh-server",
"binary_version": "1:7.9p1-10~ubuntu18.04.fips.0.10"
},
{
"binary_name": "openssh-server-hmac",
"binary_version": "1:7.9p1-10~ubuntu18.04.fips.0.10"
},
{
"binary_name": "openssh-sftp-server",
"binary_version": "1:7.9p1-10~ubuntu18.04.fips.0.10"
},
{
"binary_name": "openssh-tests",
"binary_version": "1:7.9p1-10~ubuntu18.04.fips.0.10"
},
{
"binary_name": "ssh",
"binary_version": "1:7.9p1-10~ubuntu18.04.fips.0.10"
},
{
"binary_name": "ssh-askpass-gnome",
"binary_version": "1:7.9p1-10~ubuntu18.04.fips.0.10"
}
],
"priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
},
"package": {
"ecosystem": "Ubuntu:Pro:FIPS-updates:18.04:LTS",
"name": "openssh",
"purl": "pkg:deb/ubuntu/openssh@1:7.9p1-10~ubuntu18.04.fips.0.10?arch=source\u0026distro=fips-updates/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:7.9p1-10~ubuntu18.04.fips.0.1",
"1:7.9p1-10~ubuntu18.04.fips.0.2",
"1:7.9p1-10~ubuntu18.04.fips.0.3",
"1:7.9p1-10~ubuntu18.04.fips.0.4",
"1:7.9p1-10~ubuntu18.04.fips.0.5",
"1:7.9p1-10~ubuntu18.04.fips.0.6",
"1:7.9p1-10~ubuntu18.04.fips.0.7",
"1:7.9p1-10~ubuntu18.04.fips.0.8",
"1:7.9p1-10~ubuntu18.04.fips.0.9",
"1:7.9p1-10~ubuntu18.04.fips.0.10"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "openssh-client",
"binary_version": "1:7.9p1-10~ubuntu18.04.fips.0.2"
},
{
"binary_name": "openssh-client-hmac",
"binary_version": "1:7.9p1-10~ubuntu18.04.fips.0.2"
},
{
"binary_name": "openssh-server",
"binary_version": "1:7.9p1-10~ubuntu18.04.fips.0.2"
},
{
"binary_name": "openssh-server-hmac",
"binary_version": "1:7.9p1-10~ubuntu18.04.fips.0.2"
},
{
"binary_name": "openssh-sftp-server",
"binary_version": "1:7.9p1-10~ubuntu18.04.fips.0.2"
},
{
"binary_name": "openssh-tests",
"binary_version": "1:7.9p1-10~ubuntu18.04.fips.0.2"
},
{
"binary_name": "ssh",
"binary_version": "1:7.9p1-10~ubuntu18.04.fips.0.2"
},
{
"binary_name": "ssh-askpass-gnome",
"binary_version": "1:7.9p1-10~ubuntu18.04.fips.0.2"
}
],
"priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
},
"package": {
"ecosystem": "Ubuntu:Pro:FIPS:18.04:LTS",
"name": "openssh",
"purl": "pkg:deb/ubuntu/openssh@1:7.9p1-10~ubuntu18.04.fips.0.2?arch=source\u0026distro=fips/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:7.9p1-10~ubuntu18.04.fips.0.1",
"1:7.9p1-10~ubuntu18.04.fips.0.2"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "openssh-client",
"binary_version": "1:8.2p1-4ubuntu0.11"
},
{
"binary_name": "openssh-server",
"binary_version": "1:8.2p1-4ubuntu0.11"
},
{
"binary_name": "openssh-sftp-server",
"binary_version": "1:8.2p1-4ubuntu0.11"
},
{
"binary_name": "openssh-tests",
"binary_version": "1:8.2p1-4ubuntu0.11"
},
{
"binary_name": "ssh",
"binary_version": "1:8.2p1-4ubuntu0.11"
},
{
"binary_name": "ssh-askpass-gnome",
"binary_version": "1:8.2p1-4ubuntu0.11"
}
],
"priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "openssh",
"purl": "pkg:deb/ubuntu/openssh@1:8.2p1-4ubuntu0.11?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:8.2p1-4ubuntu0.11"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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": {
"binaries": [
{
"binary_name": "openssh-client-ssh1",
"binary_version": "1:7.5p1-11build1"
}
],
"priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "openssh-ssh1",
"purl": "pkg:deb/ubuntu/openssh-ssh1@1:7.5p1-11build1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:7.5p1-11build1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "openssh-client",
"binary_version": "1:8.2p1-4ubuntu0.fips.0.11"
},
{
"binary_name": "openssh-server",
"binary_version": "1:8.2p1-4ubuntu0.fips.0.11"
},
{
"binary_name": "openssh-sftp-server",
"binary_version": "1:8.2p1-4ubuntu0.fips.0.11"
},
{
"binary_name": "openssh-tests",
"binary_version": "1:8.2p1-4ubuntu0.fips.0.11"
},
{
"binary_name": "ssh",
"binary_version": "1:8.2p1-4ubuntu0.fips.0.11"
},
{
"binary_name": "ssh-askpass-gnome",
"binary_version": "1:8.2p1-4ubuntu0.fips.0.11"
}
],
"priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
},
"package": {
"ecosystem": "Ubuntu:Pro:FIPS-updates:20.04:LTS",
"name": "openssh",
"purl": "pkg:deb/ubuntu/openssh@1:8.2p1-4ubuntu0.fips.0.11?arch=source\u0026distro=fips-updates/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:8.2p1-4ubuntu0.fips.0.11"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:8.2p1-4ubuntu0.fips.0.2.1",
"1:8.2p1-4ubuntu0.fips.0.4.0",
"1:8.2p1-4ubuntu0.fips.0.5.0",
"1:8.2p1-4ubuntu0.fips.0.7",
"1:8.2p1-4ubuntu0.fips.0.8",
"1:8.2p1-4ubuntu0.fips.0.9",
"1:8.2p1-4ubuntu0.fips.0.10"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "openssh-client",
"binary_version": "1:8.2p1-4ubuntu0.fips.0.2.1"
},
{
"binary_name": "openssh-server",
"binary_version": "1:8.2p1-4ubuntu0.fips.0.2.1"
},
{
"binary_name": "openssh-sftp-server",
"binary_version": "1:8.2p1-4ubuntu0.fips.0.2.1"
},
{
"binary_name": "openssh-tests",
"binary_version": "1:8.2p1-4ubuntu0.fips.0.2.1"
},
{
"binary_name": "ssh",
"binary_version": "1:8.2p1-4ubuntu0.fips.0.2.1"
},
{
"binary_name": "ssh-askpass-gnome",
"binary_version": "1:8.2p1-4ubuntu0.fips.0.2.1"
}
],
"priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
},
"package": {
"ecosystem": "Ubuntu:Pro:FIPS:20.04:LTS",
"name": "openssh",
"purl": "pkg:deb/ubuntu/openssh@1:8.2p1-4ubuntu0.fips.0.2.1?arch=source\u0026distro=fips/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:8.2p1-4ubuntu0.fips.0.2.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "openssh-client-ssh1",
"binary_version": "1:7.5p1-13"
}
],
"priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "openssh-ssh1",
"purl": "pkg:deb/ubuntu/openssh-ssh1@1:7.5p1-13?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:7.5p1-12",
"1:7.5p1-12build1",
"1:7.5p1-13"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "openssh-client-ssh1",
"binary_version": "1:7.5p1-16"
}
],
"priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "openssh-ssh1",
"purl": "pkg:deb/ubuntu/openssh-ssh1@1:7.5p1-16?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:7.5p1-14",
"1:7.5p1-15",
"1:7.5p1-15build1",
"1:7.5p1-16"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "openssh-client-ssh1",
"binary_version": "1:7.5p1-17"
}
],
"priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "openssh-ssh1",
"purl": "pkg:deb/ubuntu/openssh-ssh1@1:7.5p1-17?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:7.5p1-17"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "openssh-client-ssh1",
"binary_version": "1:7.5p1-18"
}
],
"priority_reason": "Cannot be reproduced on Ubuntu since sshd drops groups early"
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "openssh-ssh1",
"purl": "pkg:deb/ubuntu/openssh-ssh1@1:7.5p1-18?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:7.5p1-17",
"1:7.5p1-18"
]
}
],
"aliases": [],
"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.",
"id": "UBUNTU-CVE-2021-41617",
"modified": "2026-05-20T14:53:34Z",
"published": "2021-09-26T19:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-41617"
},
{
"type": "REPORT",
"url": "https://www.openwall.com/lists/oss-security/2021/09/26/1"
},
{
"type": "REPORT",
"url": "https://www.openssh.com/txt/release-8.8"
},
{
"type": "REPORT",
"url": "https://www.openssh.com/security.html"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5666-1"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-6565-1"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-41617"
}
],
"related": [
"USN-5666-1",
"USN-6565-1"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2021-41617"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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