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Red Hat 8 Moderate Advisory RHSA-2022-2013-01: OpenSSH Escalation Fix

red hat
Calendar Grey May 10, 2022
Dist Redhat Esm H88
Red Hat resolves a significant OpenSSH vulnerability, providing comprehensive patches for Red Hat Enterprise Linux.
An update for openssh is now available for Red Hat Enterprise Linux 8

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing this update, the OpenSSH server daemon (sshd) will be restarted automatically.

Summary

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.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.6 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory moderate red hat privilege escalation security fix openssh

References

https://access.redhat.com/security/cve/CVE-2021-41617 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.6_release_notes/

Package List

Red Hat Enterprise Linux AppStream (v. 8):
aarch64: openssh-askpass-8.0p1-13.el8.aarch64.rpm openssh-askpass-debuginfo-8.0p1-13.el8.aarch64.rpm openssh-cavs-debuginfo-8.0p1-13.el8.aarch64.rpm openssh-clients-debuginfo-8.0p1-13.el8.aarch64.rpm openssh-debuginfo-8.0p1-13.el8.aarch64.rpm openssh-debugsource-8.0p1-13.el8.aarch64.rpm openssh-keycat-debuginfo-8.0p1-13.el8.aarch64.rpm openssh-ldap-debuginfo-8.0p1-13.el8.aarch64.rpm openssh-server-debuginfo-8.0p1-13.el8.aarch64.rpm pam_ssh_agent_auth-debuginfo-0.10.3-7.13.el8.aarch64.rpm
ppc64le: openssh-askpass-8.0p1-13.el8.ppc64le.rpm openssh-askpass-debuginfo-8.0p1-13.el8.ppc64le.rpm openssh-cavs-debuginfo-8.0p1-13.el8.ppc64le.rpm openssh-clients-debuginfo-8.0p1-13.el8.ppc64le.rpm openssh-debuginfo-8.0p1-13.el8.ppc64le.rpm openssh-debugsource-8.0p1-13.el8.ppc64le.rpm openssh-keycat-debuginfo-8.0p1-13.el8.ppc64le.rpm openssh-ldap-debuginfo-8.0p1-13.el8.ppc64le.rpm openssh-server-debuginfo-8.0p1-13.el8.ppc64le.rpm pam_ssh_agent_auth-debuginfo-0.10.3-7.13.el8.ppc64le.rpm
s390x: openssh-askpass-8.0p1-13.el8.s390x.rpm openssh-askpass-debuginfo-8.0p1-13.el8.s390x.rpm openssh-cavs-debuginfo-8.0p1-13.el8.s390x.rpm openssh-clients-debuginfo-8.0p1-13.el8.s390x.rpm openssh-debuginfo-8.0p1-13.el8.s390x.rpm

Read the Full Advisory


Advisory ID: RHSA-2022:2013-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2022:2013
Issue date: 2022-05-10

Topic

An update for openssh is now available for Red Hat Enterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate red hat privilege escalation security fix openssh

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, ppc64le, s390x, x86_64

Bugs Fixed

2008291 - CVE-2021-41617 openssh: privilege escalation when AuthorizedKeysCommand or AuthorizedPrincipalsCommand are configured

2015828 - openssh patch for sshd_config:ClientAliveCountMax=0 disable the connection killing behaviour

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