CVE Alert: CVE-2013-3918 – n/a – n/a
CVE-2013-3918
The InformationCardSigninHelper Class ActiveX control in icardie.dll in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 allows remote attackers to execute arbitrary code or cause a denial of service (out-of-bounds write) via a crafted web page that is accessed by Internet Explorer, as exploited in the wild in November 2013, aka "InformationCardSigninHelper Vulnerability."
AI Summary Analysis
Risk verdict
Why this matters
Most likely attack path
Who is most exposed
Detection ideas
- IE processes loading icardie.dll or InformationCardSigninHelperActiveX calls.
- Crashes or memory corruption traces in IE (out-of-bounds write).
- Unusual user-driven navigation to suspected watering-hole domains or anomalous web traffic patterns.
- Post-exploitation indicators: unexpected process spawns, suspicious DLL loads, or unusual network beaconing from user devices.
- Patch status check: systems lacking MS13-090 are high-priority signals.
Mitigation and prioritisation
- Apply the MS13-090 patch or equivalent security updates immediately; verify rollout scope.
- Disable or remove the InformationCardSigninHelper ActiveX control; tighten IE security (disable outdated ActiveX, enable Protected View/Enhanced Protected Mode).
- Implement network and endpoint controls: restrict IE from loading ActiveX, enforce least privilege, and consider EMET/Defence Guard where available.
- Incident response readiness: ensure quick containment, re-imaging plans for affected hosts, and asset discovery to identify exposed endpoints.
- Treat as priority 1 given exploitation activity and potential for rapid realisation of impact.
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