UBUNTU-CVE-2023-51767

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Source

https://ubuntu.com/security/CVE-2023-51767

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-51767.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2023-51767

Upstream

CVE-2023-51767

Withdrawn

2025-07-08T10:46:53Z

Published

2023-12-24T07:15:00Z

Modified

2025-07-08T14:32:28.262206Z

Severity

7.0 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- medium

Summary

[none]

Details

OpenSSH through 9.6, when common types of DRAM are used, might allow row hammer attacks (for authentication bypass) because the integer value of authenticated in mmanswerauthpassword does not resist flips of a single bit. NOTE: this is applicable to a certain threat model of attacker-victim co-location in which the attacker has user privileges.

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