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ubuntuUbuntuUSN-6242-2
HistoryJul 31, 2023 - 12:00 a.m.

OpenSSH vulnerability

2023-07-3100:00:00
ubuntu.com
620
openssh
ubuntu
vulnerability
fix
pkcs#11
ssh-agent

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

10 High

AI Score

Confidence

High

0.028 Low

EPSS

Percentile

90.6%

JSON

Releases

  • Ubuntu 18.04 ESM
  • Ubuntu 16.04 ESM
  • Ubuntu 14.04 ESM

Packages

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

Details

USN-6242-1 fixed a vulnerability in OpenSSH. This update provides
the corresponding update for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS,
and Ubuntu 18.04 LTS.

Original advisory details:

It was discovered that OpenSSH incorrectly handled loading certain PKCS#11
providers. If a user forwarded their ssh-agent to an untrusted system, a
remote attacker could possibly use this issue to load arbitrary libraries
from the user’s system and execute arbitrary code.

OSVersionArchitecturePackageVersionFilename
Ubuntu18.04noarchopenssh-client< 1:7.6p1-4ubuntu0.7+esm1UNKNOWN
Ubuntu18.04noarchopenssh-client< 1:7.6p1-4ubuntu0.7UNKNOWN
Ubuntu18.04noarchopenssh-client-dbgsym< 1:7.6p1-4ubuntu0.7UNKNOWN
Ubuntu18.04noarchopenssh-client-udeb< 1:7.6p1-4ubuntu0.7UNKNOWN
Ubuntu18.04noarchopenssh-server< 1:7.6p1-4ubuntu0.7UNKNOWN
Ubuntu18.04noarchopenssh-server-dbgsym< 1:7.6p1-4ubuntu0.7UNKNOWN
Ubuntu18.04noarchopenssh-server-udeb< 1:7.6p1-4ubuntu0.7UNKNOWN
Ubuntu18.04noarchopenssh-sftp-server< 1:7.6p1-4ubuntu0.7UNKNOWN
Ubuntu18.04noarchopenssh-sftp-server-dbgsym< 1:7.6p1-4ubuntu0.7UNKNOWN
Ubuntu18.04noarchssh< 1:7.6p1-4ubuntu0.7UNKNOWN
Rows per page:
1-10 of 421

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9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

10 High

AI Score

Confidence

High

0.028 Low

EPSS

Percentile

90.6%

JSON
Related for USN-6242-2
nessus58openvas30ibm12osv7redhatcve1debian1cbl_mariner2redhat23fedora2wolfi1cloudlinux1oraclelinux5rosalinux2rocky1freebsd_advisory1centos1githubexploit3almalinux2qualysblog2cgr1freebsd2redos1slackware1cloudfoundry1ubuntu1aix1f51debiancve1prion1cvelist1amazon2ubuntucve1nvd1alpinelinux1broadcom1cve1thn1veracode1gentoo1photon3packetstorm1mageia1apple1hp1oracle1ics1