RHSA-2024:3166 - Security Advisory

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 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.

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: scp allows command injection when using backtick characters in the destination argument (CVE-2020-15778)

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 8.10 Release Notes linked from the References section.

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.

Affected Products

• Red Hat Enterprise Linux for x86_64 8 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for ARM 64 8 aarch64

Fixes

• BZ - 1860487 - CVE-2020-15778 openssh: scp allows command injection when using backtick characters in the destination argument
• RHEL-1684 - Excessive artificial delays in sshd while login using AD user
• RHEL-5217 - ssh-keygen generates RSA keys of less than 2048 bits in FIPS mode [rhel-8]
• RHEL-5221 - Default install of OpenSSH server config includes FIPS-incompatible configuration
• RHEL-5279 - Cannot login when sshd configuration is larger than 256KB
• RHEL-5321 - ssh fails when connecting to WinSSHD with gss-kex

CVEs

• CVE-2020-15778

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.10_release_notes/index