Description
The LWRES dissector in Wireshark version 0.9.15 through 1.0.10 and 1.2.0 through 1.2.5 allows remote attackers to execute arbitrary code due to a stack-based buffer overflow. This bug found and reported by babi.
This particular exploit targets the dissect_getaddrsbyname_request function. Several other functions also contain potentially exploitable stack-based buffer overflows.
The Windows version (of 1.2.5 at least) is compiled with /GS, which prevents exploitation via the return address on the stack. Sending a larger string allows exploitation using the SEH bypass method. However, this packet will usually get fragmented, which may cause additional complications.
NOTE: The vulnerable code is reached only when the packet dissection is rendered. If the packet is fragmented, all fragments must be captured and reassembled to exploit this issue.
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 exploit/multi/misc/wireshark/lwres_getaddrbynamemsf undefined(lwres_getaddrbyname) > show actions ...actions...msf undefined(lwres_getaddrbyname) > set ACTION < action-name >msf undefined(lwres_getaddrbyname) > show options ...show and set options...msf undefined(lwres_getaddrbyname) > runPrioritise with Active Threat Intelligence
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