The following advisory data is extracted from:
https://access.redhat.com/security/data/csaf/v2/advisories/2023/rhsa-2023_7879.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: opensc security update
Advisory ID:        RHSA-2023:7879-03
Product:            Red Hat Enterprise Linux
Advisory URL:       https://access.redhat.com/errata/RHSA-2023:7879
Issue date:         2023-12-19
Revision:           03
CVE Names:          CVE-2023-4535
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Summary: 
An update for opensc is now available for Red Hat Enterprise Linux 9.
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:
The OpenSC set of libraries and utilities provides support for working with smart cards. OpenSC focuses on cards that support cryptographic operations and enables their use for authentication, mail encryption, or digital signatures.
Security Fix(es):
* OpenSC: Potential PIN bypass when card tracks its own login state (CVE-2023-40660)
* OpenSC: multiple memory issues with pkcs15-init (enrollment tool) (CVE-2023-40661)
* OpenSC: out-of-bounds read in MyEID driver handling encryption using symmetric keys (CVE-2023-4535)
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-2023-4535
References:
https://access.redhat.com/security/updates/classification/#moderate
https://bugzilla.redhat.com/show_bug.cgi?id=2240912
https://bugzilla.redhat.com/show_bug.cgi?id=2240913
https://bugzilla.redhat.com/show_bug.cgi?id=2240914