ET WEB_CLIENT Adobe Acrobat PDF Reader use after free JavaScript engine (CVE-2017-16393)

Query · suricata

flow:established,from_server;
flowbits:isset,ET.pdf.in.http;
file_data;
content:"this.addAnnot"; nocase;
content:"this.addField"; nocase;
content:".popupRect"; nocase;
content:".setAction("; nocase;
content:"OnFocus"; nocase;
content:"setFocus"; nocase;
pcre:"/\s+?(?P<var1>[^\s\x3d]+?)\s*?=\s*?this\.addAnnot.+?(?P=var1)\s*\x2epopupRect\s*?=\s*?0x4000/si";
pcre:"/\s+?(?P<var2>[^\s\x3d]+?)\s*?=\s*?this\.addField.+?(?P=var2)\s*\x2e\s*setAction\s*?\x28\s*?[\x22\x27]\s*?OnFocus[^\x29]+popupOpen\s*?=\s*?true/si";
target:dest_ip;

Rule dependencies

⚠ Higher-order rule. It fires on other rules' alerts, not on raw events, so it cannot fire on its own. Deploy the rules it depends on too.

Depends on

Raw source ET WEB_CLIENT Adobe Acrobat PDF Reader use after free JavaScript engine (CVE-2017-16393) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET WEB_CLIENT Adobe Acrobat PDF Reader use after free JavaScript engine (CVE-2017-16393)";
    flow:established,from_server;
    flowbits:isset,ET.pdf.in.http;
    file_data;
    content:"this.addAnnot"; nocase;
    content:"this.addField"; nocase;
    content:".popupRect"; nocase;
    content:".setAction("; nocase;
    content:"OnFocus"; nocase;
    content:"setFocus"; nocase;
    pcre:"/\s+?(?P<var1>[^\s\x3d]+?)\s*?=\s*?this\.addAnnot.+?(?P=var1)\s*\x2epopupRect\s*?=\s*?0x4000/si";
    pcre:"/\s+?(?P<var2>[^\s\x3d]+?)\s*?=\s*?this\.addField.+?(?P=var2)\s*\x2e\s*setAction\s*?\x28\s*?[\x22\x27]\s*?OnFocus[^\x29]+popupOpen\s*?=\s*?true/si";
    reference:cve,2017-16393;
    classtype:attempted-user;
    sid:2025091; rev:4;
    metadata:affected_product Adobe_Reader, attack_target Client_and_Server, created_at 2017_11_14, cve CVE_2017_16393, deployment Perimeter, deployment Internal, confidence Low, signature_severity Major, tag Web_Client_Attacks, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_11_26, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1189, mitre_technique_name Drive_by_Compromise;
    target:dest_ip;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.