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Sslstrip Runtime Error


abs0lut3z33r0
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.I am getting the following error on sslstrip 0.8 and 0.9 on backtrack5 . SSLStrip runs successfuly for sometime (1-2mins) then it crashes with a successful sslstrip.log

159d1328614407-sslstrip-runtime-error-sslstrip_error.png

 sslstrip 0.8 by Moxie Marlinspike running... Traceback (most  recent call last):   File  "/usr/lib/python2.6/dist-packages/twisted/python/log.py", line 84, in  callWithLogger 	return callWithContext({"system": lp}, func, *args,  **kw)   File "/usr/lib/python2.6/dist-packages/twisted/python/log.py",  line 69, in callWithContext 	return context.call({ILogContext:  newCtx}, func, *args, **kw)   File  "/usr/lib/python2.6/dist-packages/twisted/python/context.py", line 59,  in callWithContext 	return self.currentContext().callWithContext(ctx,  func, *args, **kw)   File  "/usr/lib/python2.6/dist-packages/twisted/python/context.py", line 37,  in callWithContext 	return func(*args,**kw) --- <exception caught  here> ---   File  "/usr/lib/python2.6/dist-packages/twisted/internet/selectreactor.py",  line 146, in _doReadOrWrite 	why = getattr(selectable, method)()    File "/usr/lib/python2.6/dist-packages/twisted/internet/tcp.py", line  460, in doRead 	return self.protocol.dataReceived(data)   File  "/usr/lib/python2.6/dist-packages/twisted/protocols/basic.py", line 259,  in dataReceived 	return self.rawDataReceived(data)   File  "/usr/lib/python2.6/dist-packages/twisted/web/http.py", line 537, in  rawDataReceived 	self.handleResponseEnd()   File  "/pentest/web/sslstrip/sslstrip/ServerConnection.py", line 110, in  handleResponseEnd 	HTTPClient.handleResponseEnd(self)   File  "/usr/lib/python2.6/dist-packages/twisted/web/http.py", line 500, in  handleResponseEnd 	self.handleResponse(B)   File  "/pentest/web/sslstrip/sslstrip/ServerConnection.py", line 121, in  handleResponse 	self.shutdown()   File  "/pentest/web/sslstrip/sslstrip/ServerConnection.py", line 141, in  shutdown 	self.client.finish()   File  "/usr/lib/python2.6/dist-packages/twisted/web/http.py", line 900, in  finish 	"Request.finish called on a request after its connection was  lost; " exceptions.RuntimeError: Request.finish called on a request  after its connection was lost; use Request.notifyFinish to keep track of  this. Traceback (most recent call last):   File "./sslstrip.py", line  105, in main 	reactor.run()   File  "/usr/lib/python2.6/dist-packages/twisted/internet/base.py", line 1170,  in run 	self.mainLoop()   File  "/usr/lib/python2.6/dist-packages/twisted/internet/base.py", line 1182,  in mainLoop 	self.doIteration(t)   File  "/usr/lib/python2.6/dist-packages/twisted/internet/selectreactor.py",  line 140, in doSelect 	_logrun(selectable, _drdw, selectable, method,  dict) --- <exception caught here> ---   File  "/usr/lib/python2.6/dist-packages/twisted/python/log.py", line 84, in  callWithLogger 	return callWithContext({"system": lp}, func, *args,  **kw)   File "/usr/lib/python2.6/dist-packages/twisted/python/log.py",  line 69, in callWithContext 	return context.call({ILogContext:  newCtx}, func, *args, **kw)   File  "/usr/lib/python2.6/dist-packages/twisted/python/context.py", line 59,  in callWithContext 	return self.currentContext().callWithContext(ctx,  func, *args, **kw)   File  "/usr/lib/python2.6/dist-packages/twisted/python/context.py", line 37,  in callWithContext 	return func(*args,**kw)   File  "/usr/lib/python2.6/dist-packages/twisted/internet/selectreactor.py",  line 156, in _doReadOrWrite 	self._disconnectSelectable(selectable,  why, method=="doRead")   File  "/usr/lib/python2.6/dist-packages/twisted/internet/posixbase.py", line  191, in _disconnectSelectable 	selectable.readConnectionLost(f)    File "/usr/lib/python2.6/dist-packages/twisted/internet/tcp.py", line  508, in readConnectionLost 	self.connectionLost(reason)   File  "/usr/lib/python2.6/dist-packages/twisted/internet/tcp.py", line 677, in  connectionLost 	Connection.connectionLost(self, reason)   File  "/usr/lib/python2.6/dist-packages/twisted/internet/tcp.py", line 519, in  connectionLost 	protocol.connectionLost(reason)   File  "/usr/lib/python2.6/dist-packages/twisted/web/http.py", line 489, in  connectionLost 	self.handleResponseEnd()   File  "/pentest/web/sslstrip/sslstrip/ServerConnection.py", line 110, in  handleResponseEnd 	HTTPClient.handleResponseEnd(self)   File  "/usr/lib/python2.6/dist-packages/twisted/web/http.py", line 500, in  handleResponseEnd 	self.handleResponse(B)   File  "/pentest/web/sslstrip/sslstrip/ServerConnection.py", line 121, in  handleResponse 	self.shutdown()   File  "/pentest/web/sslstrip/sslstrip/ServerConnection.py", line 141, in  shutdown 	self.client.finish()   File  "/usr/lib/python2.6/dist-packages/twisted/web/http.py", line 900, in  finish 	"Request.finish called on a request after its connection was  lost; " exceptions.RuntimeError: Request.finish called on a request  after its connection was lost; use Request.notifyFinish to keep track of  this. Traceback (most recent call last):   File  "/usr/lib/python2.6/dist-packages/twisted/python/log.py", line 84, in  callWithLogger 	return callWithContext({"system": lp}, func, *args,  **kw)   File "/usr/lib/python2.6/dist-packages/twisted/python/log.py",  line 69, in callWithContext 	return context.call({ILogContext:  newCtx}, func, *args, **kw)   File  "/usr/lib/python2.6/dist-packages/twisted/python/context.py", line 59,  in callWithContext 	return self.currentContext().callWithContext(ctx,  func, *args, **kw)   File  "/usr/lib/python2.6/dist-packages/twisted/python/context.py", line 37,  in callWithContext 	return func(*args,**kw) --- <exception caught  here> ---   File  "/usr/lib/python2.6/dist-packages/twisted/internet/selectreactor.py",  line 146, in _doReadOrWrite 	why = getattr(selectable, method)()    File "/usr/lib/python2.6/dist-packages/twisted/internet/tcp.py", line  460, in doRead 	return self.protocol.dataReceived(data)   File  "/usr/lib/python2.6/dist-packages/twisted/protocols/basic.py", line 259,  in dataReceived 	return self.rawDataReceived(data)   File  "/usr/lib/python2.6/dist-packages/twisted/web/http.py", line 537, in  rawDataReceived 	self.handleResponseEnd()   File  "/pentest/web/sslstrip/sslstrip/ServerConnection.py", line 110, in  handleResponseEnd 	HTTPClient.handleResponseEnd(self)   File  "/usr/lib/python2.6/dist-packages/twisted/web/http.py", line 500, in  handleResponseEnd 	self.handleResponse(B)   File  "/pentest/web/sslstrip/sslstrip/ServerConnection.py", line 121, in  handleResponse 	self.shutdown()   File  "/pentest/web/sslstrip/sslstrip/ServerConnection.py", line 141, in  shutdown 	self.client.finish()   File  "/usr/lib/python2.6/dist-packages/twisted/web/http.py", line 900, in  finish 	"Request.finish called on a request after its connection was  lost; " exceptions.RuntimeError: Request.finish called on a request  after its connection was lost; use Request.notifyFinish to keep track of  this.

Edited by abs0lut3z33r0
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This is kind of a known issue with sslstrip. It shows up when an ssl connection has been closed at an unexpected time.

It pops up pretty regularly, but can be ignored. I would suggest to upgrading it to 0.9 which is the most recent version: http://www.thoughtcrime.org/software/sslstrip/

I would also make sure that ettercap is upgraded if you are using it. Otherwise it acts really funny with newer versions of the Linux kernel.

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