Rule History

SID: 2041449 • Source: et/open

Versions (5)

Version DetailsCurrent

Rev: 2 • Dec 1, 2022, 12:00 PM

Message:

ET WEB_SERVER Likely Malicious Request for /proc/<pid>/cmdline

Rule:

alert http $EXTERNAL_NET any -> [$HTTP_SERVERS,$HOME_NET] any (msg:"ET WEB_SERVER Likely Malicious Request for /proc/<pid>/cmdline"; flow:established,to_server; http.uri; content:"proc/"; nocase; content:"/cmdline"; nocase; endswith; fast_pattern; pcre:"/proc\/\d+\/cmdline$/"; classtype:web-application-attack; sid:2041449; rev:2; metadata:attack_target Web_Server, created_at 2022_12_01, confidence Medium, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_12_01;)

Created:

Dec 1, 2022, 12:00 PM

Updated:

Dec 1, 2022, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Aug 27, 2025, 9:35 PM

Filename:

rules/emerging-web_server.rules