The following advisory data is extracted from:
https://access.redhat.com/security/data/csaf/v2/advisories/2024/rhsa-2024_0538.json
Red Hat officially shut down their mailing list notifications October 10, 2023.  Due to this, Packet Storm has recreated the below data as a reference point to raise awareness.  It must be noted that due to an inability to easily track revision updates without crawling Red Hat's archive, these advisories are single notifications and we strongly suggest that you visit the Red Hat provided links to ensure you have the latest information available if the subject matter listed pertains to your environment.
- Packet Storm Staff
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Red Hat Security Advisory
Synopsis:           Moderate: libssh security update
Advisory ID:        RHSA-2024:0538-03
Product:            Red Hat Enterprise Linux
Advisory URL:       https://access.redhat.com/errata/RHSA-2024:0538
Issue date:         2024-01-29
Revision:           03
CVE Names:          CVE-2023-1667
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Summary: 
An update for libssh is now available for Red Hat Enterprise Linux 8.6 Extended Update Support.
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)
* ssh: Prefix truncation attack on Binary Packet Protocol (BPP) (CVE-2023-48795)
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:
https://access.redhat.com/articles/11258
CVEs:
CVE-2023-1667
References:
https://access.redhat.com/security/updates/classification/#moderate
https://bugzilla.redhat.com/show_bug.cgi?id=2182199
https://bugzilla.redhat.com/show_bug.cgi?id=2189736
https://bugzilla.redhat.com/show_bug.cgi?id=2254210