SMB: Samba Spotlight mdssvc RPC Denial of Service
This signature detects attempts to exploit a known vulnerability against Samba. A successful attack can result in a denial-of-service condition.
Extended 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.
Affected Products
Debian debian_linux
Short Name
SMB:SAMBA:MDSSVC-RPC-DOS
Severity
Major
Recommended
False
Recommended Action
None
Category
SMB
Keywords
CVE-2023-34966 CVE-2023-34967 Denial RPC Samba Service Spotlight mdssvc of
Release Date
10/04/2023
Supported Platforms
srx-branch-19.3
vsrx3bsd-19.2
srx-19.4
vsrx3bsd-19.4
srx-branch-19.4
vsrx-19.4
vsrx-19.2
srx-19.3
Sigpack Version
3664
False Positive
Unknown
Vendors
Samba
Fedoraproject
Debian
Redhat