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Red Hat Enterprise Linux 8 RHSA-2023-3839-01 Moderate: libssh Update

red hat
Calendar Grey June 27, 2023
Dist Redhat Esm H88
A crucial update from Red Hat addresses vulnerabilities in libssh related to authorization flaws and null pointer dereferences. Find out further details within!
An update for libssh 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 these updated packages, all running applications using libssh must be restarted for this update to take effect.

Summary

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.

Topics%20covered

Topics Covered

security advisory moderate update Red Hat Enterprise Linux NULL pointer authorization bypass libssh

References

https://access.redhat.com/security/cve/CVE-2023-1667 https://access.redhat.com/security/cve/CVE-2023-2283 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Enterprise Linux AppStream (v. 8):
aarch64: libssh-debuginfo-0.9.6-10.el8_8.aarch64.rpm libssh-debugsource-0.9.6-10.el8_8.aarch64.rpm libssh-devel-0.9.6-10.el8_8.aarch64.rpm
ppc64le: libssh-debuginfo-0.9.6-10.el8_8.ppc64le.rpm libssh-debugsource-0.9.6-10.el8_8.ppc64le.rpm libssh-devel-0.9.6-10.el8_8.ppc64le.rpm
s390x: libssh-debuginfo-0.9.6-10.el8_8.s390x.rpm libssh-debugsource-0.9.6-10.el8_8.s390x.rpm libssh-devel-0.9.6-10.el8_8.s390x.rpm
x86_64: libssh-debuginfo-0.9.6-10.el8_8.i686.rpm libssh-debuginfo-0.9.6-10.el8_8.x86_64.rpm libssh-debugsource-0.9.6-10.el8_8.i686.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.x86_64.rpm
Red Hat Enterprise Linux BaseOS (v. 8):
Source: libssh-0.9.6-10.el8_8.src.rpm
aarch64: libssh-0.9.6-10.el8_8.aarch64.rpm libssh-debuginfo-0.9.6-10.el8_8.aarch64.rpm libssh-debugsource-0.9.6-10.el8_8.aarch64.rpm
noarch: libssh-config-0.9.6-10.el8_8.noarch.rpm
ppc64le: libssh-0.9.6-10.el8_8.ppc64le.rpm libssh-debuginfo-0.9.6-10.el8_8.ppc64le.rpm libssh-debugsource-0.9.6-10.el8_8.ppc64le.rpm
s390x: libssh-0.9.6-10.el8_8.s390x.rpm libssh-debuginfo-0.9.6-10.el8_8.s390x.rpm libssh-debugsource-0.9.6-10.el8_8.s390x.rpm
x86_64: libssh-0.9.6-10.el8_8.i686.rpm

Read the Full Advisory


Advisory ID: RHSA-2023:3839-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2023:3839
Issue date: 2023-06-27

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 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 update Red Hat Enterprise Linux NULL pointer authorization bypass libssh

Relevant Releases Architectures

Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux BaseOS (v. 8) - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

2182199 - CVE-2023-1667 libssh: NULL pointer dereference during rekeying with algorithm guessing

2189736 - CVE-2023-2283 libssh: authorization bypass in pki_verify_data_signature

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