WebkitGTK+ 1.11.5 RenderBoxModelObject.cpp willBeDestroyed memory corruption

Summaryinfo

A vulnerability was found in WebkitGTK+ 1.11.5. It has been classified as critical. Affected by this issue is the function RenderBoxModelObject::willBeDestroyed of the file rendering/RenderBoxModelObject.cpp. The manipulation leads to memory corruption. Furthermore, there is an exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in WebkitGTK+ 1.11.5 (Web Browser). This issue affects the function RenderBoxModelObject::willBeDestroyed of the file rendering/RenderBoxModelObject.cpp. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability.

The weakness was shared 02/13/2013 as ID 108695 as not defined bug report (Website). It is possible to read the advisory at bugs.webkit.org. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known.

It is declared as proof-of-concept.

Upgrading to version 1.11.90 eliminates this vulnerability. The upgrade is hosted for download at trac.webkit.org. A possible mitigation has been published immediately after the disclosure of the vulnerability. The vulnerability will be addressed with the following lines of code:

if (isPositioned()) {
   if (RenderView* view = this->view()) {
      if (FrameView* frameView = view->frameView()) {
         if (style()->hasViewportConstrainedPosition()) 
            frameView->removeViewportConstrainedObject(this);
      }
   }
}

The vulnerability is also documented in the vulnerability database at OSVDB (101426†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Web Browser

Name

• WebkitGTK+

Version

• 1.11.5

License

• open-source

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

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