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centosCentOS ProjectCESA-2021:4782
HistoryDec 01, 2021 - 7:19 p.m.

openssh, pam_ssh_agent_auth security update

2021-12-0119:19:31
CentOS Project
lists.centos.org
178
openssh
privilege escalation
security advisory

CVSS2

4.4

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

7

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.001

Percentile

27.7%

JSON

CentOS Errata and Security Advisory CESA-2021:4782

OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server.

Security Fix(es):

  • openssh: privilege escalation when AuthorizedKeysCommand or AuthorizedPrincipalsCommand are configured (CVE-2021-41617)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2021-December/086202.html

Affected packages:
openssh
openssh-askpass
openssh-cavs
openssh-clients
openssh-keycat
openssh-ldap
openssh-server
openssh-server-sysvinit
pam_ssh_agent_auth

Upstream details at:
https://access.redhat.com/errata/RHSA-2021:4782

OSVersionArchitecturePackageVersionFilename
CentOS7x86_64openssh< 7.4p1-22.el7_9openssh-7.4p1-22.el7_9.x86_64.rpm
CentOS7x86_64openssh-askpass< 7.4p1-22.el7_9openssh-askpass-7.4p1-22.el7_9.x86_64.rpm
CentOS7x86_64openssh-cavs< 7.4p1-22.el7_9openssh-cavs-7.4p1-22.el7_9.x86_64.rpm
CentOS7x86_64openssh-clients< 7.4p1-22.el7_9openssh-clients-7.4p1-22.el7_9.x86_64.rpm
CentOS7x86_64openssh-keycat< 7.4p1-22.el7_9openssh-keycat-7.4p1-22.el7_9.x86_64.rpm
CentOS7x86_64openssh-ldap< 7.4p1-22.el7_9openssh-ldap-7.4p1-22.el7_9.x86_64.rpm
CentOS7x86_64openssh-server< 7.4p1-22.el7_9openssh-server-7.4p1-22.el7_9.x86_64.rpm
CentOS7x86_64openssh-server-sysvinit< 7.4p1-22.el7_9openssh-server-sysvinit-7.4p1-22.el7_9.x86_64.rpm
CentOS7i686pam_ssh_agent_auth< 0.10.3-2.22.el7_9pam_ssh_agent_auth-0.10.3-2.22.el7_9.i686.rpm
CentOS7x86_64pam_ssh_agent_auth< 0.10.3-2.22.el7_9pam_ssh_agent_auth-0.10.3-2.22.el7_9.x86_64.rpm

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CVSS2

4.4

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

7

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.001

Percentile

27.7%

JSON
Related for CESA-2021:4782
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