March 17th, 2008
ActiveX woes bite CA BrightStor
Another day another ActiveX problem. This time an ActiveX vulnerability in CA BrightStor ARCServe Backup could be exploited to compromise a user’s system.
A Secunia alert rates the vulnerability “highly critical.” Here are the details:
Krystian Kloskowski has reported a vulnerability in CA BrightStor ARCserve Backup, which can be exploited by malicious people to compromise a user’s system.
The vulnerability is caused due to a boundary error in the “AddColumn()” method within the “ListCtrl” ActiveX control (ListCtrl.ocx), which can be exploited to cause a stack-based buffer overflow via an overly long argument passed to the affected method.
Successful exploitation allows execution of arbitrary code e.g. when a user visits a malicious web page.
The vulnerability affects version r11.5, but other versions may be affected. More gory details–and a lot of code–are available in the original advisory from Kloskowski. The flaw is unpatched. And the solution is familiar: Set the kill-bit for the affected ActiveX control.
Larry Dignan is Editor in Chief of ZDNet and Editorial Director of ZDNet sister site TechRepublic. See his full profile and disclosure of his industry affiliations.
