The following advisory data is extracted from:
https://access.redhat.com/security/data/csaf/v2/advisories/2023/rhsa-2023_7883.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:           Important: postgresql:15 security update
Advisory ID:        RHSA-2023:7883-03
Product:            Red Hat Enterprise Linux
Advisory URL:       https://access.redhat.com/errata/RHSA-2023:7883
Issue date:         2023-12-20
Revision:           03
CVE Names:          CVE-2023-5868
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Summary: 
An update for the postgresql:15 module is now available for Red Hat Enterprise Linux 8.8 Extended Update Support.
Red Hat Product Security has rated this update as having a security impact of Important. 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:
PostgreSQL is an advanced object-relational database management system (DBMS).
Security Fix(es):
* postgresql: Buffer overrun from integer overflow in array modification (CVE-2023-5869)
* postgresql: Memory disclosure in aggregate function calls (CVE-2023-5868)
* postgresql: extension script @substitutions@ within quoting allow SQL injection (CVE-2023-39417)
* postgresql: Role pg_signal_backend can signal certain superuser processes. (CVE-2023-5870)
* postgresql: MERGE fails to enforce UPDATE or SELECT row security policies (CVE-2023-39418)
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-2023-5868
References:
https://access.redhat.com/security/updates/classification/#important
https://bugzilla.redhat.com/show_bug.cgi?id=2228111
https://bugzilla.redhat.com/show_bug.cgi?id=2228112
https://bugzilla.redhat.com/show_bug.cgi?id=2247168
https://bugzilla.redhat.com/show_bug.cgi?id=2247169
https://bugzilla.redhat.com/show_bug.cgi?id=2247170