J-Security Center

Title: Internet Download Manager Buffer Overflow Vulnerability

Severity: HIGH

Description:

Internet Download Manager is an application designed to increase the speed of downloading files from remote sites. It is designed to operate on Microsoft Windows operating systems.

Internet Download Manager is susceptible to a buffer overflow vulnerability. This issue is due to a failure of the application to properly bounds check input data prior to copying it into a fixed size memory buffer.

This issue presents itself when the application is given a URI of more than 2080 bytes to attempt to download. In the process of handling the excessively long URI, the affected application copies the user-supplied data to a fixed sized memory buffer.

This vulnerability allows attackers to overflow a memory buffer, overwriting adjacent memory regions. This allows attackers to influence the normal flow of execution of the application, potentially leading to arbitrary machine code execution in the context of the user executing the vulnerable application.

Internet Download Manager version 4.05 and prior are reported to be vulnerable to this issue.

Affected Products:

  • Internet Download Manager Corp. Internet Download Manager 2.x
  • Internet Download Manager Corp. Internet Download Manager 3.x
  • Internet Download Manager Corp. Internet Download Manager 4.0.0 1
  • Internet Download Manager Corp. Internet Download Manager 4.0.0 2
  • Internet Download Manager Corp. Internet Download Manager 4.0.0 3
  • Internet Download Manager Corp. Internet Download Manager 4.0.0 4
  • Internet Download Manager Corp. Internet Download Manager 4.0.0 5
  • Internet Download Manager Corp. Internet Download Manager 4.00

References:

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