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Samba read_nttrans_ea_list Integer Overflow

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Samba read_nttrans_ea_list Integer Overflow



Integer overflow in the read_nttrans_ea_list function in nttrans.c in smbd in Samba 3.x before 3.5.22, 3.6.x before 3.6.17, and 4.x before 4.0.8 allows remote attackers to cause a denial of service (memory consumption) via a malformed packet. Important Note: in order to work, the "ea support" option on the target share must be enabled.


  • Jeremy Allison
  • dz_lnly


Module Options

To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':

msf > use auxiliary/dos/samba/read_nttrans_ea_list
msf auxiliary(read_nttrans_ea_list) > show actions
msf auxiliary(read_nttrans_ea_list) > set ACTION < action-name >
msf auxiliary(read_nttrans_ea_list) > show options
    ...show and set options...
msf auxiliary(read_nttrans_ea_list) > run 

Time is precious, so I don’t want to do something manually that I can automate. Leveraging the Metasploit Framework when automating any task keeps us from having to re-create the wheel as we can use the existing libraries and focus our efforts where it matters.

– Jim O’Gorman | President, Offensive Security