An openssh security update has been released for Red Hat Enterprise Linux 7.
RHSA-2021:4782-04: Moderate: openssh security update
=====================================================================
Red Hat Security Advisory
Synopsis: Moderate: openssh security update
Advisory ID: RHSA-2021:4782-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:4782
Issue date: 2021-11-23
CVE Names: CVE-2021-41617
=====================================================================
1. Summary:
An update for openssh is now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security impact
of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available for each vulnerability from
the CVE link(s) in the References section.
2. Relevant releases/architectures:
Red Hat Enterprise Linux Client (v. 7) - x86_64
Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64
Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64
3. Description:
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.
4. 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.
5. Bugs fixed ( https://bugzilla.redhat.com/):
1999263 - frequent sshd segfaults
2008291 - CVE-2021-41617 openssh: privilege escalation when AuthorizedKeysCommand or AuthorizedPrincipalsCommand are configured
6. Package List:
Red Hat Enterprise Linux Client (v. 7):
Source:
openssh-7.4p1-22.el7_9.src.rpm
x86_64:
openssh-7.4p1-22.el7_9.x86_64.rpm
openssh-askpass-7.4p1-22.el7_9.x86_64.rpm
openssh-clients-7.4p1-22.el7_9.x86_64.rpm
openssh-debuginfo-7.4p1-22.el7_9.x86_64.rpm
openssh-keycat-7.4p1-22.el7_9.x86_64.rpm
openssh-server-7.4p1-22.el7_9.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
x86_64:
openssh-cavs-7.4p1-22.el7_9.x86_64.rpm
openssh-debuginfo-7.4p1-22.el7_9.i686.rpm
openssh-debuginfo-7.4p1-22.el7_9.x86_64.rpm
openssh-ldap-7.4p1-22.el7_9.x86_64.rpm
openssh-server-sysvinit-7.4p1-22.el7_9.x86_64.rpm
pam_ssh_agent_auth-0.10.3-2.22.el7_9.i686.rpm
pam_ssh_agent_auth-0.10.3-2.22.el7_9.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source:
openssh-7.4p1-22.el7_9.src.rpm
x86_64:
openssh-7.4p1-22.el7_9.x86_64.rpm
openssh-clients-7.4p1-22.el7_9.x86_64.rpm
openssh-debuginfo-7.4p1-22.el7_9.x86_64.rpm
openssh-keycat-7.4p1-22.el7_9.x86_64.rpm
openssh-server-7.4p1-22.el7_9.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
x86_64:
openssh-askpass-7.4p1-22.el7_9.x86_64.rpm
openssh-cavs-7.4p1-22.el7_9.x86_64.rpm
openssh-debuginfo-7.4p1-22.el7_9.i686.rpm
openssh-debuginfo-7.4p1-22.el7_9.x86_64.rpm
openssh-ldap-7.4p1-22.el7_9.x86_64.rpm
openssh-server-sysvinit-7.4p1-22.el7_9.x86_64.rpm
pam_ssh_agent_auth-0.10.3-2.22.el7_9.i686.rpm
pam_ssh_agent_auth-0.10.3-2.22.el7_9.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source:
openssh-7.4p1-22.el7_9.src.rpm
ppc64:
openssh-7.4p1-22.el7_9.ppc64.rpm
openssh-askpass-7.4p1-22.el7_9.ppc64.rpm
openssh-clients-7.4p1-22.el7_9.ppc64.rpm
openssh-debuginfo-7.4p1-22.el7_9.ppc64.rpm
openssh-keycat-7.4p1-22.el7_9.ppc64.rpm
openssh-server-7.4p1-22.el7_9.ppc64.rpm
ppc64le:
openssh-7.4p1-22.el7_9.ppc64le.rpm
openssh-askpass-7.4p1-22.el7_9.ppc64le.rpm
openssh-clients-7.4p1-22.el7_9.ppc64le.rpm
openssh-debuginfo-7.4p1-22.el7_9.ppc64le.rpm
openssh-keycat-7.4p1-22.el7_9.ppc64le.rpm
openssh-server-7.4p1-22.el7_9.ppc64le.rpm
s390x:
openssh-7.4p1-22.el7_9.s390x.rpm
openssh-askpass-7.4p1-22.el7_9.s390x.rpm
openssh-clients-7.4p1-22.el7_9.s390x.rpm
openssh-debuginfo-7.4p1-22.el7_9.s390x.rpm
openssh-keycat-7.4p1-22.el7_9.s390x.rpm
openssh-server-7.4p1-22.el7_9.s390x.rpm
x86_64:
openssh-7.4p1-22.el7_9.x86_64.rpm
openssh-askpass-7.4p1-22.el7_9.x86_64.rpm
openssh-clients-7.4p1-22.el7_9.x86_64.rpm
openssh-debuginfo-7.4p1-22.el7_9.x86_64.rpm
openssh-keycat-7.4p1-22.el7_9.x86_64.rpm
openssh-server-7.4p1-22.el7_9.x86_64.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
ppc64:
openssh-cavs-7.4p1-22.el7_9.ppc64.rpm
openssh-debuginfo-7.4p1-22.el7_9.ppc.rpm
openssh-debuginfo-7.4p1-22.el7_9.ppc64.rpm
openssh-ldap-7.4p1-22.el7_9.ppc64.rpm
openssh-server-sysvinit-7.4p1-22.el7_9.ppc64.rpm
pam_ssh_agent_auth-0.10.3-2.22.el7_9.ppc.rpm
pam_ssh_agent_auth-0.10.3-2.22.el7_9.ppc64.rpm
ppc64le:
openssh-cavs-7.4p1-22.el7_9.ppc64le.rpm
openssh-debuginfo-7.4p1-22.el7_9.ppc64le.rpm
openssh-ldap-7.4p1-22.el7_9.ppc64le.rpm
openssh-server-sysvinit-7.4p1-22.el7_9.ppc64le.rpm
pam_ssh_agent_auth-0.10.3-2.22.el7_9.ppc64le.rpm
s390x:
openssh-cavs-7.4p1-22.el7_9.s390x.rpm
openssh-debuginfo-7.4p1-22.el7_9.s390.rpm
openssh-debuginfo-7.4p1-22.el7_9.s390x.rpm
openssh-ldap-7.4p1-22.el7_9.s390x.rpm
openssh-server-sysvinit-7.4p1-22.el7_9.s390x.rpm
pam_ssh_agent_auth-0.10.3-2.22.el7_9.s390.rpm
pam_ssh_agent_auth-0.10.3-2.22.el7_9.s390x.rpm
x86_64:
openssh-cavs-7.4p1-22.el7_9.x86_64.rpm
openssh-debuginfo-7.4p1-22.el7_9.i686.rpm
openssh-debuginfo-7.4p1-22.el7_9.x86_64.rpm
openssh-ldap-7.4p1-22.el7_9.x86_64.rpm
openssh-server-sysvinit-7.4p1-22.el7_9.x86_64.rpm
pam_ssh_agent_auth-0.10.3-2.22.el7_9.i686.rpm
pam_ssh_agent_auth-0.10.3-2.22.el7_9.x86_64.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source:
openssh-7.4p1-22.el7_9.src.rpm
x86_64:
openssh-7.4p1-22.el7_9.x86_64.rpm
openssh-askpass-7.4p1-22.el7_9.x86_64.rpm
openssh-clients-7.4p1-22.el7_9.x86_64.rpm
openssh-debuginfo-7.4p1-22.el7_9.x86_64.rpm
openssh-keycat-7.4p1-22.el7_9.x86_64.rpm
openssh-server-7.4p1-22.el7_9.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 7):
x86_64:
openssh-cavs-7.4p1-22.el7_9.x86_64.rpm
openssh-debuginfo-7.4p1-22.el7_9.i686.rpm
openssh-debuginfo-7.4p1-22.el7_9.x86_64.rpm
openssh-ldap-7.4p1-22.el7_9.x86_64.rpm
openssh-server-sysvinit-7.4p1-22.el7_9.x86_64.rpm
pam_ssh_agent_auth-0.10.3-2.22.el7_9.i686.rpm
pam_ssh_agent_auth-0.10.3-2.22.el7_9.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2021-41617
https://access.redhat.com/security/updates/classification/#moderate
8. Contact:
The Red Hat security contact is . More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2021 Red Hat, Inc.
