UBUNTU-CVE-2018-15919

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Source

https://ubuntu.com/security/CVE-2018-15919

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-15919.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2018-15919

Upstream

CVE-2018-15919

Published

2018-08-28T08:29:00Z

Modified

2025-10-24T04:47:11Z

Severity

5.3 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Ubuntu - low

Summary

[none]

Details

Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states 'We understand that the OpenSSH developers do not want to treat such a username enumeration (or "oracle") as a vulnerability.'

References

Affected packages

Ubuntu:18.04:LTS

openssh-ssh1

Package

Name: openssh-ssh1
Purl: pkg:deb/ubuntu/openssh-ssh1@1:7.5p1-10?arch=source&distro=bionic

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

{
    "binaries": [
        {
            "binary_version": "1:7.5p1-10",
            "binary_name": "openssh-client-ssh1"
        }
    ]
}

Ubuntu:20.04:LTS

openssh

Package

Name: openssh
Purl: pkg:deb/ubuntu/openssh@1:8.2p1-4ubuntu0.13?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

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

1:8.2p1-4ubuntu0.11

1:8.2p1-4ubuntu0.12

1:8.2p1-4ubuntu0.13

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "1:8.2p1-4ubuntu0.13",
            "binary_name": "openssh-client"
        },
        {
            "binary_version": "1:8.2p1-4ubuntu0.13",
            "binary_name": "openssh-server"
        },
        {
            "binary_version": "1:8.2p1-4ubuntu0.13",
            "binary_name": "openssh-sftp-server"
        },
        {
            "binary_version": "1:8.2p1-4ubuntu0.13",
            "binary_name": "openssh-tests"
        },
        {
            "binary_version": "1:8.2p1-4ubuntu0.13",
            "binary_name": "ssh"
        },
        {
            "binary_version": "1:8.2p1-4ubuntu0.13",
            "binary_name": "ssh-askpass-gnome"
        }
    ]
}

openssh-ssh1

Package

Name: openssh-ssh1
Purl: pkg:deb/ubuntu/openssh-ssh1@1:7.5p1-11build1?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:7.*

1:7.5p1-11build1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "1:7.5p1-11build1",
            "binary_name": "openssh-client-ssh1"
        }
    ]
}

Ubuntu:Pro:14.04:LTS

openssh

Package

Name: openssh
Purl: pkg:deb/ubuntu/openssh@1:6.6p1-2ubuntu2.13+esm2?arch=source&distro=esm-infra-legacy/trusty

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

{
    "binaries": [
        {
            "binary_version": "1:6.6p1-2ubuntu2.13+esm2",
            "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"
        }
    ]
}

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

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

1:7.2p2-4ubuntu2.10+esm7

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "1:7.2p2-4ubuntu2.10+esm7",
            "binary_name": "openssh-client"
        },
        {
            "binary_version": "1:7.2p2-4ubuntu2.10+esm7",
            "binary_name": "openssh-client-ssh1"
        },
        {
            "binary_version": "1:7.2p2-4ubuntu2.10+esm7",
            "binary_name": "openssh-server"
        },
        {
            "binary_version": "1:7.2p2-4ubuntu2.10+esm7",
            "binary_name": "openssh-sftp-server"
        },
        {
            "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-krb5"
        }
    ]
}

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

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

1:7.6p1-4ubuntu0.7+esm4

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "1:7.6p1-4ubuntu0.7+esm4",
            "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"
        }
    ]
}