Published:2012/03/01  Last Updated:2012/03/01

Kingsoft Internet Security 2011 vulnerable to denial-of-service


Kingsoft Internet Security 2011 contains a denial-of-service (DoS) vulnerability.

Products Affected

  • Kingsoft Internet Security 2011

Note that Kingsoft Internet Security 2012 is not affected by this vulnerability.


Kingsoft Internet Security 2011 contains a vulnerability in the device driver, which may result in a denial-of-service (DoS).


An attacker that can login to the system with the software running may cause a denial-of-service (DoS).


Update the Software
Update to the latest version according to the information provided by the developer.

According to the developer, the automatic update which addresses this vulnerability has been provided since February 20, 2012.


JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2012.03.01

Measures Conditions Severity
Access Required requires you to login into the box to a shell or remote desktop
  • Low-Mid
Authentication login caused to be created by an administrator
  • Low-Mid
User Interaction Required the vulnerability can be exploited without an honest user taking any action
  • High
Exploit Complexity some expertise and/or luck required (most buffer overflows, guessing correctly in small space, expertise in Windows function calls)
  • Mid-High

Description of each analysis measures


Satoshi TANDA of Fourteenforty Research Institute Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

Other Information

JPCERT Reports
CERT Advisory
CPNI Advisory
CVE CVE-2012-0321
JVN iPedia JVNDB-2012-000019