tor/changes/bug21018

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o Major bugfixes (parsing, security):
- Fix a bug in parsing that could cause clients to read a single
byte past the end of an allocated region. This bug could be
used to cause hardened clients (built with
--enable-expensive-hardening) to crash if they tried to visit
a hostile hidden service. Non-hardened clients are only
affected depending on the details of their platform's memory
allocator. Fixes bug 21018; bugfix on 0.2.0.8-alpha. Found by
using libFuzzer. Also tracked as TROVE-2016-12-002 and as
CVE-2016-1254.