Rule History

SID: 2017005 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 6 • Jun 12, 2013, 12:00 PM

Message:

ET CURRENT_EVENTS Possible Microsoft Office PNG overflow attempt invalid tEXt chunk length

Rule:

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET CURRENT_EVENTS Possible Microsoft Office PNG overflow attempt invalid tEXt chunk length"; flow:established,to_client; file_data; content:"|89 50 4E 47 0D 0A 1A 0A|"; content:"IHDR"; distance:0; content:"tEXt"; distance:13; byte_test:4,>,2147483647,-8,relative; reference:cve,2013-1331; reference:url,blogs.technet.com/b/srd/archive/2013/06/11/ms13-051-get-out-of-my-office.aspx; classtype:attempted-user; sid:2017005; rev:6; metadata:created_at 2013_06_12, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)

Created:

Jun 12, 2013, 12:00 PM

Updated:

Jul 26, 2019, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Dec 11, 2025, 10:34 PM

Filename:

rules/emerging-current_events.rules