CVE-2023-34966

HighCVSS 7.5/10Last modified Nov 7, 2026

Description

An infinite loop vulnerability was found in Samba's mdssvc RPC service for Spotlight. When parsing Spotlight mdssvc RPC packets sent by the client, the core unmarshalling function sl_unpack_loop() did not validate a field in the network packet that contains the count of elements in an array-like structure. By passing 0 as the count value, the attacked function will run in an endless loop consuming 100% CPU. This flaw allows an attacker to issue a malformed RPC request, triggering an infinite loop, resulting in a denial of service condition.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-835

Affected software

VendorProductVersions
Red HatRed Hat Enterprise Linux 8—
Red HatRed Hat Enterprise Linux 8—
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support—
Red HatRed Hat Enterprise Linux 8.8 Extended Update Support—
Red HatRed Hat Enterprise Linux 9—
Red HatRed Hat Enterprise Linux 9—
Red HatRed Hat Enterprise Linux 9.2 Extended Update Support—
Red HatRed Hat Virtualization 4 for Red Hat Enterprise Linux 8—
Red HatRed Hat Enterprise Linux 6—
Red HatRed Hat Enterprise Linux 6—
Red HatRed Hat Enterprise Linux 7—
Red HatRed Hat Storage 3—

References

Timeline

Published
Jul 20, 2023
Last modified
Nov 7, 2026
NVD status
Modified

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CVE-2023-34966: High severity, CVSS 7.5 | Vulnix