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Affected Component
Analysis
samba
Patched
Name
CVE-2023-34966
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.
Published Date
Updated Date
Workaround
-
Advisories
https://access.redhat.com/errata/RHSA-2023:6667Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7139Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-34966Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2222793Issue Tracking
https://www.samba.org/samba/security/CVE-2023-34966Vendor Advisory
https://access.redhat.com/errata/RHSA-2023:6667Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7139Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-34966Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2222793Issue Tracking
https://www.samba.org/samba/security/CVE-2023-34966Vendor Advisory
Analysis#
Vulnerability Ratings#
7.5
CVSSv31
7.5
CVSSv31
Others affected components#
Resolved with patches#
samba (yocto:kirkstone)
#
Title
Author
Resolve
1
CVE-2023-34966: CI: test for sl_unpack_loop()
Ralph Boehme <slow@samba.org>
CVE-2023-34966
2
CVE-2023-34966: mdssvc: harden sl_unpack_loop()
Ralph Boehme <slow@samba.org>
CVE-2023-34966