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https://gitlab.torproject.org/tpo/core/tor.git
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Tobias Stoeckmann
0d5a0b4f0c
If tor is compiled on a system with neither vasprintf nor _vscprintf, the fallback implementation exposes a logic flaw which prevents proper usage of strings longer than 127 characters: * tor_vsnprintf returns -1 if supplied buffer is not large enough, but tor_vasprintf uses this function to retrieve required length * the result of tor_vsnprintf is not properly checked for negative return values Both aspects together could in theory lead to exposure of uninitialized stack memory in the resulting string. This requires an invalid format string or data that exceeds integer limitations. Fortunately tor is not even able to run with this implementation because it runs into asserts early on during startup. Also the unit tests fail during a "make check" run. Signed-off-by: Tobias Stoeckmann <tobias@stoeckmann.org> [backported to 0.2.9 by nickm]
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.