UBUNTU-CVE-2020-14145

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Source

https://ubuntu.com/security/CVE-2020-14145

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-14145.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-14145

Upstream

CVE-2020-14145

Related

USN-6279-1

Withdrawn

2025-07-08T10:45:38Z

Published

2020-06-29T18:15:00Z

Modified

2025-07-08T14:59:40.187413Z

Severity

5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
- low

Summary

[none]

Details

The client side in OpenSSH 5.7 through 8.4 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client). NOTE: some reports state that 8.5 and 8.6 are also affected.

References

Affected packages

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

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

Ubuntu:Pro:FIPS:16.04:LTS / openssh

Package

Name: openssh
Purl: pkg:deb/ubuntu/openssh@1:7.2p2-4ubuntu2.fips.2.10.7?arch=source&distro=fips-updates/xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:7.*

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

1:7.2p2-4ubuntu2.fips.2.10.3

1:7.2p2-4ubuntu2.fips.2.10.4

1:7.2p2-4ubuntu2.fips.2.10.5

1:7.2p2-4ubuntu2.fips.2.10.6

1:7.2p2-4ubuntu2.fips.2.10.7

Ubuntu:Pro:FIPS:16.04:LTS / openssh

Package

Name: openssh
Purl: pkg:deb/ubuntu/openssh@1:7.2p2-4ubuntu2.fips.2.10.1?arch=source&distro=fips/xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:7.*

1:7.2p2-4ubuntu2.fips.2.2

1:7.2p2-4ubuntu2.fips.2.2.1

1:7.2p2-4ubuntu2.fips.2.10.1

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

Ubuntu:Pro:18.04:LTS / openssh-ssh1

Package

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

Ubuntu:Pro:FIPS-updates:18.04:LTS / openssh

Package

Name: openssh
Purl: pkg:deb/ubuntu/openssh@1:7.9p1-10~ubuntu18.04.fips.0.10?arch=source&distro=fips-updates/bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:7.*

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

Ubuntu:Pro:FIPS:18.04:LTS / openssh

Package

Name: openssh
Purl: pkg:deb/ubuntu/openssh@1:7.9p1-10~ubuntu18.04.fips.0.2?arch=source&distro=fips/bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:7.*

1:7.9p1-10~ubuntu18.04.fips.0.1

1:7.9p1-10~ubuntu18.04.fips.0.2

Ubuntu:Pro:20.04:LTS / openssh

Package

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

Ubuntu:Pro:20.04:LTS / openssh-ssh1

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:7.*

1:7.5p1-11build1

Ubuntu:Pro:FIPS-updates:20.04:LTS / openssh

Package

Name: openssh
Purl: pkg:deb/ubuntu/openssh@1:8.2p1-4ubuntu0.fips.0.13?arch=source&distro=fips-updates/focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:8.*

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

1:8.2p1-4ubuntu0.fips.0.11

1:8.2p1-4ubuntu0.fips.0.12

1:8.2p1-4ubuntu0.fips.0.13

Ubuntu:Pro:FIPS:20.04:LTS / openssh

Package

Name: openssh
Purl: pkg:deb/ubuntu/openssh@1:8.2p1-4ubuntu0.fips.0.2.1?arch=source&distro=fips/focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:8.*

1:8.2p1-4ubuntu0.fips.0.2.1

Ubuntu:22.04:LTS / openssh

Package

Name: openssh
Purl: pkg:deb/ubuntu/openssh@1:8.9p1-3ubuntu0.13?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

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

1:8.9p1-3ubuntu0.5

1:8.9p1-3ubuntu0.6

1:8.9p1-3ubuntu0.7

1:8.9p1-3ubuntu0.10

1:8.9p1-3ubuntu0.11

1:8.9p1-3ubuntu0.13

Ubuntu:22.04:LTS / openssh-ssh1

Package

Name: openssh-ssh1
Purl: pkg:deb/ubuntu/openssh-ssh1@1:7.5p1-13?arch=source&distro=jammy

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