CVE-2023-5568

Samba: heap buffer overflow with freshness tokens in the heimdal kdc

State: Published
Severity: 5.9 Medium
Published: Oct 24, 2023
Updated: Sep 2, 2025
Reserved: Oct 13, 2023

Description

A heap-based Buffer Overflow flaw was discovered in Samba. It could allow a remote, authenticated attacker to exploit this vulnerability to cause a denial of service.

Scores

CVSS	Score	Vector	Source
3.1	5.9 Medium	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H	redhat

Weaknesses

CWE-122 Heap-based Buffer Overflow

Affected Products

Product	Versions
Red Hat Enterprise Linux 6Red Hat
Red Hat Enterprise Linux 7Red Hat
Red Hat Enterprise Linux 8Red Hat
Red Hat Enterprise Linux 9Red Hat
Red Hat Storage 3Red Hat

References

https://access.redhat.com/security/cve/CVE-2023-5568vdb-entry
RHBZ#2245174issue-tracking
https://bugzilla.samba.org/show_bug.cgi?id=15491
https://www.samba.org/samba/history/samba-4.19.2.html
https://security.netapp.com/advisory/ntap-20231124-0007/

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