Issued:
2023-06-27
Updated:
2023-06-27

RHSA-2023:3839 - Moderate: libssh security update

Synopsis

Moderate: libssh security update

Type/Severity

Security Advisory Moderate

Topic

An update for libssh 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

libssh is a library which implements the SSH protocol. It can be used to implement client and server applications.

Security Fix(es):

  • libssh: NULL pointer dereference during rekeying with algorithm guessing (CVE-2023-1667)

  • libssh: authorization bypass in pki_verify_data_signature (CVE-2023-2283)

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.

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 these updated packages, all running applications using libssh must be restarted for this update to take effect.

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for x86_648x86_64
Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions8.8x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support8.8x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension8.8x86_64
Red Hat Enterprise Linux for x86_64 - Extended Life Cycle8.10x86_64
Red Hat Enterprise Linux for Power, little endian8ppc64le
Red Hat Enterprise Linux for Power, little endian - Extended Update Support8.8ppc64le
Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle8.10ppc64le
Red Hat Enterprise Linux for IBM z Systems8s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support8.8s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle8.10s390x
Red Hat Enterprise Linux for ARM 648aarch64
Red Hat Enterprise Linux for ARM 64 - Extended Update Support8.8aarch64
Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle8.10aarch64
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions8.8ppc64le
Red Hat Enterprise Linux Server - TUS8.8x86_64

Updated Packages

  • libssh-debugsource-0.9.6-10.el8_8.i686.rpm
  • libssh-0.9.6-10.el8_8.s390x.rpm
  • libssh-0.9.6-10.el8_8.src.rpm
  • libssh-debugsource-0.9.6-10.el8_8.s390x.rpm
  • libssh-debugsource-0.9.6-10.el8_8.x86_64.rpm
  • libssh-devel-0.9.6-10.el8_8.i686.rpm
  • libssh-devel-0.9.6-10.el8_8.s390x.rpm
  • libssh-0.9.6-10.el8_8.i686.rpm
  • libssh-debuginfo-0.9.6-10.el8_8.ppc64le.rpm
  • libssh-debugsource-0.9.6-10.el8_8.aarch64.rpm
  • libssh-debuginfo-0.9.6-10.el8_8.x86_64.rpm
  • libssh-0.9.6-10.el8_8.ppc64le.rpm
  • libssh-config-0.9.6-10.el8_8.noarch.rpm
  • libssh-debuginfo-0.9.6-10.el8_8.aarch64.rpm
  • libssh-devel-0.9.6-10.el8_8.x86_64.rpm
  • libssh-debuginfo-0.9.6-10.el8_8.i686.rpm
  • libssh-debugsource-0.9.6-10.el8_8.ppc64le.rpm
  • libssh-0.9.6-10.el8_8.x86_64.rpm
  • libssh-debuginfo-0.9.6-10.el8_8.s390x.rpm
  • libssh-devel-0.9.6-10.el8_8.ppc64le.rpm
  • libssh-devel-0.9.6-10.el8_8.aarch64.rpm
  • libssh-0.9.6-10.el8_8.aarch64.rpm

Fixes

CVEs

References

Additional information