Adobe Flash – Heap Buffer Overflow Due to Indexing Error When Loading FLV File

• Exploit Database
• 17 阅读

• 作者： Google Security Research
  日期： 2015-08-19
• 类别：

  • dos
  平台：

  • linux_x86-64
• 来源：https://www.exploit-db.com/exploits/37880/

• Source: https://code.google.com/p/google-security-research/issues/detail?id=426&can=1&q=label%3AProduct-Flash%20modified-after%3A2015%2F8%2F17&sort=id
  
  To reproduce, host the attached files appropriately, and:
  
  
  
  If there is no crash at first, refresh the page a few times.
  
  With a debugger attached to 64-bit Flash in Chrome Linux, the crash manifests like this:
  
  => 0x00007f7779846eee:	mov%ax,(%rdi,%rdx,2)
  
  rax0xff69
  rdi0x7f7778b70000
  rdx0x160b
  
  7f777861e000-7f7778b72000 rw-p 00000000 00:00 0 
  7f7778b72000-7f7779228000 ---p 00000000 00:00 0 
  
  It looks like an indexing error; the rdi "base" address is in bounds but add on 2*rdx and the address is not in bounds.
  
  Proof of Concept:
  https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/37880.zip