SERVER-SAMBA -- Snort has detected traffic exploiting vulnerabilities in Samba servers.
SERVER-SAMBA Samba write andx command memory leak attempt
This vulnerability relies in the way how the Samba server is not able to check the correct range of data length that a SMB client states is going to send, hence the client can send more data and make the Samba server to leak some sections of it's memory into the content of the file the client wants to write. The client is not able to choose what memory section leak, though. Even though this vulnerability is present in deprecated SMB protocol commands, the vulnerable functions are still present in the code, hence if an authenticated SMB client uses the vulnerable commands, will be able to exploit this vulnerability
What To Look For
This event is generated when a specially crafted SMB packet designed to exploit a memory in Samba server is detected. This memory leak occurs via a file write operation on a Samba share.
No public information
No known false positives
Cisco Talos Intelligence Group
MITRE ATT&CK Framework
Technique: Data from Network Shared Drive
For reference, see the MITRE ATT&CK vulnerability types here:
Information Leakage happens when an attacker manipulates a system into revealing sensitive information, either through malformed input or by taking advantage of another feature of the system.
CVE Additional Information