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5.5

Kingsoft Internet Security 9+ can be forced to crash

CVE-2018-9151 · published 8 years ago
Summary

The core driver in Kingsoft Internet Security 9+ contains a coding error that can be triggered by any local user without special permissions. Exploiting this error causes the operating system to stop working and restart, leading to downtime. Apply the vendor's security update or reinstall the product with the latest version to prevent the crash.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
kingsoft internet_security_9_plus 2010.06.23.247
cpe:2.3:a:kingsoft:internet_security_9_plus:2010.06.23.247:*:*:*:*:*:*:*
Original advisory text
A NULL pointer dereference bug in the function ObReferenceObjectByHandle in the Kingsoft Internet Security 9+ kernel driver KWatch3.sys allows local non-privileged users to crash the system via IOC...
A NULL pointer dereference bug in the function ObReferenceObjectByHandle in the Kingsoft Internet Security 9+ kernel driver KWatch3.sys allows local non-privileged users to crash the system via IOCTL 0x80030030.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
5.5 Medium
Exploitation
<1% chance of attack within 30 days
Type
CWE-476NULL Pointer Dereference
Timeline
Published30 Mar 2018
Updated3 Nov 2026
First seen29 Sep 2026
Sources
CVE-2018-9151 · NVD
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