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Red Hat Enterprise Linux 8 RHSA-2021-4368 Moderate: OpenSSH Info Exposure

red hat
Calendar Grey November 9, 2021
Dist Redhat Esm H88
A new OpenSSH update is out for Red Hat Enterprise Linux 8, rated Moderate, addressing an information leak issue.
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: 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.

Topics%20covered

Topics Covered

security advisory moderate security issue Red Hat information leak update openssh

References

https://access.redhat.com/security/cve/CVE-2020-14145 https://access.redhat.com/security/updates/classification#moderate https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/8/html/8.5_release_notes/index

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

Read the Full Advisory


Advisory ID: RHSA-2021:4368-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:4368
Issue date: 2021-11-09

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 security issue Red Hat information leak update 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

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

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