USN-7270-2

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/notices/USN-7270-2
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7270-2.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-7270-2
Upstream
Related
Published
2025-02-18T18:00:52.868188Z
Modified
2025-07-16T08:57:41.421438Z
Summary
openssh vulnerability
Details

USN-7270-1 fixed a vulnerability in OpenSSH. This update provides the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.

Original advisory details:

It was discovered that the OpenSSH client incorrectly handled the non-default VerifyHostKeyDNS option. If that option were enabled, an attacker could possibly impersonate a server by completely bypassing the server identity check. (CVE-2025-26465)

References

Affected packages

Ubuntu:Pro:16.04:LTS / openssh

Package

Name
openssh
Purl
pkg:deb/ubuntu/openssh@1:7.2p2-4ubuntu2.10+esm7?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:7.2p2-4ubuntu2.10+esm7

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
1:7.2p2-4ubuntu2.10+esm2
1:7.2p2-4ubuntu2.10+esm3
1:7.2p2-4ubuntu2.10+esm4
1:7.2p2-4ubuntu2.10+esm5
1:7.2p2-4ubuntu2.10+esm6

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+esm7"
        },
        {
            "binary_name": "openssh-client-dbgsym",
            "binary_version": "1:7.2p2-4ubuntu2.10+esm7"
        },
        {
            "binary_name": "openssh-client-ssh1",
            "binary_version": "1:7.2p2-4ubuntu2.10+esm7"
        },
        {
            "binary_name": "openssh-client-ssh1-dbgsym",
            "binary_version": "1:7.2p2-4ubuntu2.10+esm7"
        },
        {
            "binary_name": "openssh-client-udeb",
            "binary_version": "1:7.2p2-4ubuntu2.10+esm7"
        },
        {
            "binary_name": "openssh-client-udeb-dbgsym",
            "binary_version": "1:7.2p2-4ubuntu2.10+esm7"
        },
        {
            "binary_name": "openssh-server",
            "binary_version": "1:7.2p2-4ubuntu2.10+esm7"
        },
        {
            "binary_name": "openssh-server-dbgsym",
            "binary_version": "1:7.2p2-4ubuntu2.10+esm7"
        },
        {
            "binary_name": "openssh-server-udeb",
            "binary_version": "1:7.2p2-4ubuntu2.10+esm7"
        },
        {
            "binary_name": "openssh-server-udeb-dbgsym",
            "binary_version": "1:7.2p2-4ubuntu2.10+esm7"
        },
        {
            "binary_name": "openssh-sftp-server",
            "binary_version": "1:7.2p2-4ubuntu2.10+esm7"
        },
        {
            "binary_name": "openssh-sftp-server-dbgsym",
            "binary_version": "1:7.2p2-4ubuntu2.10+esm7"
        },
        {
            "binary_name": "ssh",
            "binary_version": "1:7.2p2-4ubuntu2.10+esm7"
        },
        {
            "binary_name": "ssh-askpass-gnome",
            "binary_version": "1:7.2p2-4ubuntu2.10+esm7"
        },
        {
            "binary_name": "ssh-askpass-gnome-dbgsym",
            "binary_version": "1:7.2p2-4ubuntu2.10+esm7"
        },
        {
            "binary_name": "ssh-krb5",
            "binary_version": "1:7.2p2-4ubuntu2.10+esm7"
        }
    ]
}

Ubuntu:Pro:18.04:LTS / openssh

Package

Name
openssh
Purl
pkg:deb/ubuntu/openssh@1:7.6p1-4ubuntu0.7+esm4?arch=source&distro=esm-infra/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:7.6p1-4ubuntu0.7+esm4

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 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "openssh-client",
            "binary_version": "1:7.6p1-4ubuntu0.7+esm4"
        },
        {
            "binary_name": "openssh-client-dbgsym",
            "binary_version": "1:7.6p1-4ubuntu0.7+esm4"
        },
        {
            "binary_name": "openssh-client-udeb",
            "binary_version": "1:7.6p1-4ubuntu0.7+esm4"
        },
        {
            "binary_name": "openssh-server",
            "binary_version": "1:7.6p1-4ubuntu0.7+esm4"
        },
        {
            "binary_name": "openssh-server-dbgsym",
            "binary_version": "1:7.6p1-4ubuntu0.7+esm4"
        },
        {
            "binary_name": "openssh-server-udeb",
            "binary_version": "1:7.6p1-4ubuntu0.7+esm4"
        },
        {
            "binary_name": "openssh-sftp-server",
            "binary_version": "1:7.6p1-4ubuntu0.7+esm4"
        },
        {
            "binary_name": "openssh-sftp-server-dbgsym",
            "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"
        },
        {
            "binary_name": "ssh-askpass-gnome-dbgsym",
            "binary_version": "1:7.6p1-4ubuntu0.7+esm4"
        }
    ]
}