Mercurial > vim
view src/testdir/test_channel_unix.py @ 33863:3b8089d550eb v9.0.2141
patch 9.0.2141: [security]: buffer-overflow in suggest_trie_walk
Commit: https://github.com/vim/vim/commit/0fb375aae608d7306b4baf9c1f906961f32e2abf
Author: Christian Brabandt <cb@256bit.org>
Date: Wed Nov 29 10:23:39 2023 +0100
patch 9.0.2141: [security]: buffer-overflow in suggest_trie_walk
Problem: [security]: buffer-overflow in suggest_trie_walk
Solution: Check n before using it as index into byts array
Basically, n as an index into the byts array, can point to beyond the byts
array. So let's double check, that n is within the expected range after
incrementing it from sp->ts_curi and bail out if it would be invalid.
Reported by @henices, thanks!
Signed-off-by: Christian Brabandt <cb@256bit.org>
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Sun, 10 Dec 2023 15:16:03 +0100 |
parents | cdd13ed3e5cb |
children |
line wrap: on
line source
#!/usr/bin/env python # # Server that will accept connections from a Vim channel. # Used by test_channel.vim. # # This requires Python 2.6 or later. from __future__ import print_function from test_channel import ThreadedTCPServer, TestingRequestHandler, \ writePortInFile import socket import threading import os try: FileNotFoundError except NameError: # Python 2 FileNotFoundError = (IOError, OSError) if not hasattr(socket, "AF_UNIX"): raise NotImplementedError("Unix sockets are not supported on this platform") class ThreadedUnixServer(ThreadedTCPServer): address_family = socket.AF_UNIX class ThreadedUnixRequestHandler(TestingRequestHandler): pass def main(path): server = ThreadedUnixServer(path, ThreadedUnixRequestHandler) # Start a thread with the server. That thread will then start a new thread # for each connection. server_thread = threading.Thread(target=server.serve_forever) server_thread.start() # Signal the test harness we're ready, the port value has no meaning. writePortInFile(1234) print("Listening on {0}".format(server.server_address)) # Main thread terminates, but the server continues running # until server.shutdown() is called. try: while server_thread.is_alive(): server_thread.join(1) except (KeyboardInterrupt, SystemExit): server.shutdown() if __name__ == "__main__": try: os.remove("Xtestsocket") except FileNotFoundError: pass main("Xtestsocket")