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https://gitlab.torproject.org/tpo/core/tor.git
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Tobias Stoeckmann
0fa95308fe
If the concatenation of connection buffer and the buffer of linked connection exceeds INT_MAX bytes, then buf_move_to_buf returns -1 as an error value. This value is currently casted to size_t (variable n_read) and will erroneously lead to an increasement of variable "max_to_read". This in turn can be used to call connection_buf_read_from_socket to store more data inside the buffer than expected and clogging the connection buffer. If the linked connection buffer was able to overflow INT_MAX, the call of buf_move_to_buf would have previously internally triggered an integer overflow, corrupting the state of the connection buffer. Signed-off-by: Tobias Stoeckmann <tobias@stoeckmann.org>
Tor protects your privacy on the internet by hiding the connection
between your Internet address and the services you use. We believe Tor
is reasonably secure, but please ensure you read the instructions and
configure it properly.
To build Tor from source:
./configure && make && make install
To build Tor from a just-cloned git repository:
sh autogen.sh && ./configure && make && make install
Home page:
https://www.torproject.org/
Download new versions:
https://www.torproject.org/download/download.html
Documentation, including links to installation and setup instructions:
https://www.torproject.org/docs/documentation.html
Making applications work with Tor:
https://wiki.torproject.org/projects/tor/wiki/doc/TorifyHOWTO
Frequently Asked Questions:
https://www.torproject.org/docs/faq.html
To get started working on Tor development:
See the doc/HACKING directory.