Rule History

SID: 2001873 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 9 • Jul 30, 2010, 12:00 PM

Message:

ET EXPLOIT MS Exchange Link State Routing Chunk (maybe MS05-021)

Rule:

alert tcp $EXTERNAL_NET any -> $SMTP_SERVERS 25 (msg:"ET EXPLOIT MS Exchange Link State Routing Chunk (maybe MS05-021)"; flow:to_server, established; content:"X-LINK2STATE"; nocase; content:"CHUNK="; nocase; threshold:type limit, track by_src, count 1, seconds 60; flowbits:set,msxlsa; reference:cve,CAN-2005-0560; reference:url,isc.sans.org/diary.php?date=2005-04-12; reference:url,www.microsoft.com/technet/security/bulletin/MS05-021.mspx; classtype:misc-activity; sid:2001873; rev:9; metadata:created_at 2010_07_30, confidence Medium, signature_severity Major, updated_at 2019_07_26;)

Created:

Jul 30, 2010, 12:00 PM

Updated:

Jul 26, 2019, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

May 30, 2025, 12:04 AM

Filename:

rules/emerging-exploit.rules