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.

References

https://www.samba.org/samba/security/CVE-2023-34966

https://www.debian.org/security/2023/dsa-5477

https://security.netapp.com/advisory/ntap-20230731-0010/

https://lists.fedoraproject.org/archives/list/[email protected]/message/OT74M42E6C36W7PQVY3OS4ZM7DVYB64Z/

https://lists.fedoraproject.org/archives/list/[email protected]/message/BPCSGND7LO467AJGR5DYBGZLTCGTOBCC/

https://bugzilla.redhat.com/show_bug.cgi?id=2222793

https://access.redhat.com/security/cve/CVE-2023-34966

https://access.redhat.com/errata/RHSA-2024:0580

https://access.redhat.com/errata/RHSA-2024:0423

https://access.redhat.com/errata/RHSA-2023:7139

https://access.redhat.com/errata/RHSA-2023:6667

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3