SERVER-WEBAPP -- Snort has detected traffic exploiting vulnerabilities in web based applications on servers.
SERVER-WEBAPP Liferay arbitrary Java object deserialization attempt
This rule identifies vulnerable LifeRay HTTP URI paths with serialized java objects that would attack the web server.
This rule alerts when vulnerable LifeRay web paths are found with serialized java objects.
Attacks/Scans seen in the wild
No known false positives
Cisco Talos Intelligence Group
No rule groups
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.
CVE-2020-7961Deserialization of Untrusted Data in Liferay Portal prior to 7.2.1 CE GA2 allows remote attackers to execute arbitrary code via JSON web services (JSONWS).
Tactic: Initial Access
Technique: Exploit Public-Facing Application
For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org