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026e7987ad
We need to make sure that the worst thing that a weird consensus param can do to us is to break our Tor (and only if the other Tors are reliably broken in the same way) so that the majority of directory authorities can't pull any attacks that are worse than the DoS that they can trigger by simply shutting down. One of these worse things was the cbtnummodes parameter, which could lead to heap corruption on some systems if the value was sufficiently large. This commit fixes this particular issue and also introduces sanity checking for all consensus parameters.
10 lines
336 B
Plaintext
10 lines
336 B
Plaintext
o Major features:
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- Introduce minimum/maximum values that a client is going to believe
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in a consensus. This helps to avoid crashes or worse when a param
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has a weird value.
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o Major bugfixes:
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- Prevent crash/heap corruption when cbtnumnodes consensus parameter is
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set to 0 or large values. Fixes bug 2317.
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