Novell iPrint Client Browser Plugin GetDriverFile Uninitialized Pointer Remote Code Execution VulnerabilityTPTI-10-08: August 23rd, 2010
TippingPoint™ IPS Customer ProtectionTippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 10264. For further product information on the TippingPoint IPS:
Vulnerability DetailsThis vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of the Novell iPrint client. User interaction is required to exploit this vulnerability in that the target must visit a malicious page.
The specific flaw exists within the ienipp.ocx ActiveX control with CLSID 36723f97-7aa0-11d4-8919-FF2D71D0D32C. The function exposes a GetDriverFile method. When this method is invoked for the first time a pointer in the .data section is mapped to an external function within another module. When invoked the second time, the process fails to load the library and assumes the pointer is still valid. When the uninitialized pointer is called the process jumps to an address space easily controlled by an attacker. This can be leveraged to execute remote code under the context of the user running the browser.
Vendor ResponseNovell has issued an update to correct this vulnerability. More details can be found at:
2010-08-12 - Vulnerability reported to vendor
2010-08-23 - Coordinated public release of advisory