USN-6560-1

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Source

https://ubuntu.com/security/notices/USN-6560-1

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6560-1.json

JSON Data

https://api.osv.dev/v1/vulns/USN-6560-1

Related

Published

2023-12-19T13:02:10.298646Z

Modified

2023-12-19T13:02:10.298646Z

Summary

openssh vulnerabilities

Details

Fabian Bäumer, Marcus Brinkmann, Jörg Schwenk discovered that the SSH protocol was vulnerable to a prefix truncation attack. If a remote attacker was able to intercept SSH communications, extension negotiation messages could be truncated, possibly leading to certain algorithms and features being downgraded. This issue is known as the Terrapin attack. This update adds protocol extensions to mitigate this issue. (CVE-2023-48795)

Luci Stanescu discovered that OpenSSH incorrectly added destination constraints when smartcard keys were added to ssh-agent, contrary to expectations. This issue only affected Ubuntu 22.04 LTS, and Ubuntu 23.04. (CVE-2023-28531)

References

Affected packages

Ubuntu:20.04:LTS / openssh

Package

Name: openssh
Purl: pkg:deb/ubuntu/openssh?arch=src?distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1:8.2p1-4ubuntu0.10

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

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1:8.2p1-4ubuntu0.10",
            "binary_name": "openssh-client"
        },
        {
            "binary_version": "1:8.2p1-4ubuntu0.10",
            "binary_name": "openssh-client-dbgsym"
        },
        {
            "binary_version": "1:8.2p1-4ubuntu0.10",
            "binary_name": "openssh-client-udeb"
        },
        {
            "binary_version": "1:8.2p1-4ubuntu0.10",
            "binary_name": "openssh-server"
        },
        {
            "binary_version": "1:8.2p1-4ubuntu0.10",
            "binary_name": "openssh-server-dbgsym"
        },
        {
            "binary_version": "1:8.2p1-4ubuntu0.10",
            "binary_name": "openssh-server-udeb"
        },
        {
            "binary_version": "1:8.2p1-4ubuntu0.10",
            "binary_name": "openssh-sftp-server"
        },
        {
            "binary_version": "1:8.2p1-4ubuntu0.10",
            "binary_name": "openssh-sftp-server-dbgsym"
        },
        {
            "binary_version": "1:8.2p1-4ubuntu0.10",
            "binary_name": "openssh-tests"
        },
        {
            "binary_version": "1:8.2p1-4ubuntu0.10",
            "binary_name": "openssh-tests-dbgsym"
        },
        {
            "binary_version": "1:8.2p1-4ubuntu0.10",
            "binary_name": "ssh"
        },
        {
            "binary_version": "1:8.2p1-4ubuntu0.10",
            "binary_name": "ssh-askpass-gnome"
        },
        {
            "binary_version": "1:8.2p1-4ubuntu0.10",
            "binary_name": "ssh-askpass-gnome-dbgsym"
        }
    ]
}

Ubuntu:22.04:LTS / openssh

Package

Name: openssh
Purl: pkg:deb/ubuntu/openssh?arch=src?distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1:8.9p1-3ubuntu0.5

Affected versions

1:8.*

1:8.4p1-6ubuntu2

1:8.7p1-2

1:8.7p1-2build1

1:8.7p1-4

1:8.8p1-1

1:8.9p1-3

1:8.9p1-3ubuntu0.1

1:8.9p1-3ubuntu0.3

1:8.9p1-3ubuntu0.4

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1:8.9p1-3ubuntu0.5",
            "binary_name": "openssh-client"
        },
        {
            "binary_version": "1:8.9p1-3ubuntu0.5",
            "binary_name": "openssh-client-dbgsym"
        },
        {
            "binary_version": "1:8.9p1-3ubuntu0.5",
            "binary_name": "openssh-server"
        },
        {
            "binary_version": "1:8.9p1-3ubuntu0.5",
            "binary_name": "openssh-server-dbgsym"
        },
        {
            "binary_version": "1:8.9p1-3ubuntu0.5",
            "binary_name": "openssh-sftp-server"
        },
        {
            "binary_version": "1:8.9p1-3ubuntu0.5",
            "binary_name": "openssh-sftp-server-dbgsym"
        },
        {
            "binary_version": "1:8.9p1-3ubuntu0.5",
            "binary_name": "openssh-tests"
        },
        {
            "binary_version": "1:8.9p1-3ubuntu0.5",
            "binary_name": "openssh-tests-dbgsym"
        },
        {
            "binary_version": "1:8.9p1-3ubuntu0.5",
            "binary_name": "ssh"
        },
        {
            "binary_version": "1:8.9p1-3ubuntu0.5",
            "binary_name": "ssh-askpass-gnome"
        },
        {
            "binary_version": "1:8.9p1-3ubuntu0.5",
            "binary_name": "ssh-askpass-gnome-dbgsym"
        }
    ]
}

Ubuntu:23.10 / openssh

Package

Name: openssh
Purl: pkg:deb/ubuntu/openssh?arch=src?distro=mantic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1:9.3p1-1ubuntu3.1

Affected versions

1:9.*

1:9.0p1-1ubuntu8

1:9.0p1-1ubuntu8.1

1:9.2p1-2ubuntu3

1:9.3p1-1ubuntu1

1:9.3p1-1ubuntu2

1:9.3p1-1ubuntu3

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1:9.3p1-1ubuntu3.1",
            "binary_name": "openssh-client"
        },
        {
            "binary_version": "1:9.3p1-1ubuntu3.1",
            "binary_name": "openssh-client-dbgsym"
        },
        {
            "binary_version": "1:9.3p1-1ubuntu3.1",
            "binary_name": "openssh-server"
        },
        {
            "binary_version": "1:9.3p1-1ubuntu3.1",
            "binary_name": "openssh-server-dbgsym"
        },
        {
            "binary_version": "1:9.3p1-1ubuntu3.1",
            "binary_name": "openssh-sftp-server"
        },
        {
            "binary_version": "1:9.3p1-1ubuntu3.1",
            "binary_name": "openssh-sftp-server-dbgsym"
        },
        {
            "binary_version": "1:9.3p1-1ubuntu3.1",
            "binary_name": "openssh-tests"
        },
        {
            "binary_version": "1:9.3p1-1ubuntu3.1",
            "binary_name": "openssh-tests-dbgsym"
        },
        {
            "binary_version": "1:9.3p1-1ubuntu3.1",
            "binary_name": "ssh"
        },
        {
            "binary_version": "1:9.3p1-1ubuntu3.1",
            "binary_name": "ssh-askpass-gnome"
        },
        {
            "binary_version": "1:9.3p1-1ubuntu3.1",
            "binary_name": "ssh-askpass-gnome-dbgsym"
        }
    ]
}