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OSX Mettle segfaults when clipboard has screenshot data present #249

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adfoster-r7 opened this issue Jul 26, 2023 · 0 comments
Open

OSX Mettle segfaults when clipboard has screenshot data present #249

adfoster-r7 opened this issue Jul 26, 2023 · 0 comments
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adfoster-r7 commented Jul 26, 2023 •
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Replication steps:

  • Open an OSX Meterpreter session
  • load extapi in the active session
  • Take a screenshot to the buffer
  • Run Meterpreter's clipboard_get_data command
  • See the segfault
msf6 post(test/extapi) > sessions -i -1
[*] Starting interaction with 3...

meterpreter > load extapi
Loading extension extapi...Success.
meterpreter > clipboard_get_data

[*] 127.0.0.1 - Meterpreter session 3 closed.  Reason: Died

The payload crashes:

$ ./shell --debug 3
...
[07-26-2023 10:46:34.856s] [tlv.c:566] processing command: 10 id: '74369621985230545653190084014876'
[07-26-2023 10:46:36.385s] [tlv.c:525] handler for 3002: 0x7fbce3f048e0
[07-26-2023 10:46:36.385s] [tlv.c:566] processing command: 3002 id: '81252928395475597528162220029690'
[1]    10924 segmentation fault  ./shell --debug 3
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