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ubuntuUbuntuUSN-3809-2
HistoryAug 12, 2021 - 12:00 a.m.

OpenSSH regression

2021-08-1200:00:00
ubuntu.com
205

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7 High

AI Score

Confidence

High

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.052 Low

EPSS

Percentile

92.9%

JSON

Releases

  • Ubuntu 18.04 ESM

Packages

  • openssh - secure shell (SSH) for secure access to remote machines

Details

USN-3809-1 fixed vulnerabilities in OpenSSH. The update for CVE-2018-15473
was incomplete and could introduce a regression in certain environments.
This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Robert Swiecki discovered that OpenSSH incorrectly handled certain messages.
An attacker could possibly use this issue to cause a denial of service.
This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS.
(CVE-2016-10708)

It was discovered that OpenSSH incorrectly handled certain requests.
An attacker could possibly use this issue to access sensitive information.
(CVE-2018-15473)

OSVersionArchitecturePackageVersionFilename
Ubuntu18.04noarchopenssh-server< 1:7.6p1-4ubuntu0.5UNKNOWN
Ubuntu18.04noarchopenssh-client< 1:7.6p1-4ubuntu0.5UNKNOWN
Ubuntu18.04noarchopenssh-client-dbgsym< 1:7.6p1-4ubuntu0.5UNKNOWN
Ubuntu18.04noarchopenssh-client-udeb< 1:7.6p1-4ubuntu0.5UNKNOWN
Ubuntu18.04noarchopenssh-server-dbgsym< 1:7.6p1-4ubuntu0.5UNKNOWN
Ubuntu18.04noarchopenssh-server-udeb< 1:7.6p1-4ubuntu0.5UNKNOWN
Ubuntu18.04noarchopenssh-sftp-server< 1:7.6p1-4ubuntu0.5UNKNOWN
Ubuntu18.04noarchopenssh-sftp-server-dbgsym< 1:7.6p1-4ubuntu0.5UNKNOWN
Ubuntu18.04noarchssh< 1:7.6p1-4ubuntu0.5UNKNOWN
Ubuntu18.04noarchssh-askpass-gnome< 1:7.6p1-4ubuntu0.5UNKNOWN
Rows per page:
1-10 of 111

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7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7 High

AI Score

Confidence

High

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.052 Low

EPSS

Percentile

92.9%

JSON
Related for USN-3809-2
cloudfoundry2ubuntu1nessus64osv8openvas27symantec1suse5ubuntucve3debian6ibm24cve3debiancve3redhatcve2f52prion3altlinux2oraclelinux2fedora2centos3alpinelinux2zdt2canvas1veracode1redhat3citrix1metasploit1packetstorm1gentoo1aix1amazon2mageia1exploitpack2checkpoint_advisories1exploitdb2cloudlinux1photon4rosalinux1ics1oracle1