Sid 1-57234

Rule Documentation
References

Report a false positive

Rule Category

SERVER-OTHER -- Snort has detected traffic exploiting vulnerabilities in a server in the network.

Alert Message

SERVER-OTHER Microsoft Exchange Server Unified Messaging arbitrary code execution attempt

Rule Explanation

This rule looks for attempts to exploit a code execution vulnerability in Microsoft Exchange.

What To Look For

This rule looks for attempts to exploit a code execution vulnerability in Microsoft Exchange.

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

MITRE ATT&CK Framework

Tactic: Execution

Technique: Exploitation for Client Execution

For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org

Additional Links

portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2021-26857

Rule Vulnerability

Insecure Deserialization

Insecure Deserialization relates to web application security. Applications turn an object into data through serialization; the reverse of that process, deserialization, can be vulnerable to attacks when the application trusts the data that is being deserialized. Serialized data is machine readable and not encrypted; serialized user-supplied data should not be trusted. Deserialization attacks can lead to remote code execution.