[RHSA-2021:4368-04] Moderate: openssh security update

Tue Nov 9 20:39:06 UTC 2021

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 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 AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, ppc64le, s390x, 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: Observable discrepancy leading to an information leak in the
algorithm negotiation (CVE-2020-14145)

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 8.5 Release Notes linked from 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/):

1836277 - sshd -T requires -C when "Match" is used in sshd_config
1843372 - PIN is lost when iterating over tokens when adding pkcs11 keys to ssh-agent
1852930 - CVE-2020-14145 openssh: Observable discrepancy leading to an information leak in the algorithm negotiation
1868996 - ssh-agent segfaults during ssh-add -s pkcs11
1879503 - sshd logs incorrect PAM error message
1901518 - ssh-keygen printing fingerprint issue with Windows keys
1909988 - ls -t option doesn't work to sort upon the modification time in sftp session
1913041 - openssh - client window fix
1933517 - ssh-copy-id could not resolve ipv6 address ends with colon

6. Package List:

Red Hat Enterprise Linux AppStream (v. 8):

aarch64:
openssh-askpass-8.0p1-10.el8.aarch64.rpm
openssh-askpass-debuginfo-8.0p1-10.el8.aarch64.rpm
openssh-cavs-debuginfo-8.0p1-10.el8.aarch64.rpm
openssh-clients-debuginfo-8.0p1-10.el8.aarch64.rpm
openssh-debuginfo-8.0p1-10.el8.aarch64.rpm
openssh-debugsource-8.0p1-10.el8.aarch64.rpm
openssh-keycat-debuginfo-8.0p1-10.el8.aarch64.rpm
openssh-ldap-debuginfo-8.0p1-10.el8.aarch64.rpm
openssh-server-debuginfo-8.0p1-10.el8.aarch64.rpm
pam_ssh_agent_auth-debuginfo-0.10.3-7.10.el8.aarch64.rpm

ppc64le:
openssh-askpass-8.0p1-10.el8.ppc64le.rpm
openssh-askpass-debuginfo-8.0p1-10.el8.ppc64le.rpm
openssh-cavs-debuginfo-8.0p1-10.el8.ppc64le.rpm
openssh-clients-debuginfo-8.0p1-10.el8.ppc64le.rpm
openssh-debuginfo-8.0p1-10.el8.ppc64le.rpm
openssh-debugsource-8.0p1-10.el8.ppc64le.rpm
openssh-keycat-debuginfo-8.0p1-10.el8.ppc64le.rpm
openssh-ldap-debuginfo-8.0p1-10.el8.ppc64le.rpm
openssh-server-debuginfo-8.0p1-10.el8.ppc64le.rpm
pam_ssh_agent_auth-debuginfo-0.10.3-7.10.el8.ppc64le.rpm

s390x:
openssh-askpass-8.0p1-10.el8.s390x.rpm
openssh-askpass-debuginfo-8.0p1-10.el8.s390x.rpm
openssh-cavs-debuginfo-8.0p1-10.el8.s390x.rpm
openssh-clients-debuginfo-8.0p1-10.el8.s390x.rpm
openssh-debuginfo-8.0p1-10.el8.s390x.rpm
openssh-debugsource-8.0p1-10.el8.s390x.rpm
openssh-keycat-debuginfo-8.0p1-10.el8.s390x.rpm
openssh-ldap-debuginfo-8.0p1-10.el8.s390x.rpm
openssh-server-debuginfo-8.0p1-10.el8.s390x.rpm
pam_ssh_agent_auth-debuginfo-0.10.3-7.10.el8.s390x.rpm

x86_64:
openssh-askpass-8.0p1-10.el8.x86_64.rpm
openssh-askpass-debuginfo-8.0p1-10.el8.x86_64.rpm
openssh-cavs-debuginfo-8.0p1-10.el8.x86_64.rpm
openssh-clients-debuginfo-8.0p1-10.el8.x86_64.rpm
openssh-debuginfo-8.0p1-10.el8.x86_64.rpm
openssh-debugsource-8.0p1-10.el8.x86_64.rpm
openssh-keycat-debuginfo-8.0p1-10.el8.x86_64.rpm
openssh-ldap-debuginfo-8.0p1-10.el8.x86_64.rpm
openssh-server-debuginfo-8.0p1-10.el8.x86_64.rpm
pam_ssh_agent_auth-debuginfo-0.10.3-7.10.el8.x86_64.rpm

Red Hat Enterprise Linux BaseOS (v. 8):

Source:
openssh-8.0p1-10.el8.src.rpm

aarch64:
openssh-8.0p1-10.el8.aarch64.rpm
openssh-askpass-debuginfo-8.0p1-10.el8.aarch64.rpm
openssh-cavs-8.0p1-10.el8.aarch64.rpm
openssh-cavs-debuginfo-8.0p1-10.el8.aarch64.rpm
openssh-clients-8.0p1-10.el8.aarch64.rpm
openssh-clients-debuginfo-8.0p1-10.el8.aarch64.rpm
openssh-debuginfo-8.0p1-10.el8.aarch64.rpm
openssh-debugsource-8.0p1-10.el8.aarch64.rpm
openssh-keycat-8.0p1-10.el8.aarch64.rpm
openssh-keycat-debuginfo-8.0p1-10.el8.aarch64.rpm
openssh-ldap-8.0p1-10.el8.aarch64.rpm
openssh-ldap-debuginfo-8.0p1-10.el8.aarch64.rpm
openssh-server-8.0p1-10.el8.aarch64.rpm
openssh-server-debuginfo-8.0p1-10.el8.aarch64.rpm
pam_ssh_agent_auth-0.10.3-7.10.el8.aarch64.rpm
pam_ssh_agent_auth-debuginfo-0.10.3-7.10.el8.aarch64.rpm

ppc64le:
openssh-8.0p1-10.el8.ppc64le.rpm
openssh-askpass-debuginfo-8.0p1-10.el8.ppc64le.rpm
openssh-cavs-8.0p1-10.el8.ppc64le.rpm
openssh-cavs-debuginfo-8.0p1-10.el8.ppc64le.rpm
openssh-clients-8.0p1-10.el8.ppc64le.rpm
openssh-clients-debuginfo-8.0p1-10.el8.ppc64le.rpm
openssh-debuginfo-8.0p1-10.el8.ppc64le.rpm
openssh-debugsource-8.0p1-10.el8.ppc64le.rpm
openssh-keycat-8.0p1-10.el8.ppc64le.rpm
openssh-keycat-debuginfo-8.0p1-10.el8.ppc64le.rpm
openssh-ldap-8.0p1-10.el8.ppc64le.rpm
openssh-ldap-debuginfo-8.0p1-10.el8.ppc64le.rpm
openssh-server-8.0p1-10.el8.ppc64le.rpm
openssh-server-debuginfo-8.0p1-10.el8.ppc64le.rpm
pam_ssh_agent_auth-0.10.3-7.10.el8.ppc64le.rpm
pam_ssh_agent_auth-debuginfo-0.10.3-7.10.el8.ppc64le.rpm

s390x:
openssh-8.0p1-10.el8.s390x.rpm
openssh-askpass-debuginfo-8.0p1-10.el8.s390x.rpm
openssh-cavs-8.0p1-10.el8.s390x.rpm
openssh-cavs-debuginfo-8.0p1-10.el8.s390x.rpm
openssh-clients-8.0p1-10.el8.s390x.rpm
openssh-clients-debuginfo-8.0p1-10.el8.s390x.rpm
openssh-debuginfo-8.0p1-10.el8.s390x.rpm
openssh-debugsource-8.0p1-10.el8.s390x.rpm
openssh-keycat-8.0p1-10.el8.s390x.rpm
openssh-keycat-debuginfo-8.0p1-10.el8.s390x.rpm
openssh-ldap-8.0p1-10.el8.s390x.rpm
openssh-ldap-debuginfo-8.0p1-10.el8.s390x.rpm
openssh-server-8.0p1-10.el8.s390x.rpm
openssh-server-debuginfo-8.0p1-10.el8.s390x.rpm
pam_ssh_agent_auth-0.10.3-7.10.el8.s390x.rpm
pam_ssh_agent_auth-debuginfo-0.10.3-7.10.el8.s390x.rpm

x86_64:
openssh-8.0p1-10.el8.x86_64.rpm
openssh-askpass-debuginfo-8.0p1-10.el8.x86_64.rpm
openssh-cavs-8.0p1-10.el8.x86_64.rpm
openssh-cavs-debuginfo-8.0p1-10.el8.x86_64.rpm
openssh-clients-8.0p1-10.el8.x86_64.rpm
openssh-clients-debuginfo-8.0p1-10.el8.x86_64.rpm
openssh-debuginfo-8.0p1-10.el8.x86_64.rpm
openssh-debugsource-8.0p1-10.el8.x86_64.rpm
openssh-keycat-8.0p1-10.el8.x86_64.rpm
openssh-keycat-debuginfo-8.0p1-10.el8.x86_64.rpm
openssh-ldap-8.0p1-10.el8.x86_64.rpm
openssh-ldap-debuginfo-8.0p1-10.el8.x86_64.rpm
openssh-server-8.0p1-10.el8.x86_64.rpm
openssh-server-debuginfo-8.0p1-10.el8.x86_64.rpm
pam_ssh_agent_auth-0.10.3-7.10.el8.x86_64.rpm
pam_ssh_agent_auth-debuginfo-0.10.3-7.10.el8.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-2020-14145
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.5_release_notes/

8. Contact:

The Red Hat security contact is <secalert at redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2021 Red Hat, Inc.
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