CVE-2023-5568

samba: heap buffer overflow with freshness tokens in the Heimdal KDC

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Severity

Low

Red Hat Product Security

5.9

CVSS 3.1

Review impact separately from score.

Published · October 9, 2023

Updated · November 22, 2025

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.

Statement

Red Hat Enterprise Linux and Fedora do not provide the Heimdal implementation of Kerberos, therefore they are not affected.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.9
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H

CWE-122 · Heap-based Buffer Overflow