fetchmail 6.3.17 security/regression fix release

The 6.3.17 release of fetchmail is now available at the usual locations,
including <http://developer.berlios.de/projects/fetchmail>.

The source archive is available at:
<http://developer.berlios.de/projects/fetchmail/fetchmail-6.3.17.tar.bz2>

Here are the release notes:

fetchmail-6.3.17 (released 2010-05-06, 25767 LoC):

# SECURITY FIX
* CVE-2010-1167: Fetchmail before release 6.3.17 did not properly sanitize
  external input (mail headers and UID). When a multi-character locale (such as
  UTF-8) was in use, this could cause memory exhaustion and thus a denial of
  service, because fetchmail's report.c functions assumed that non-success of
  [v]snprintf was due to insufficient buffer size allocation. It would then
  repeatedly reallocate a larger buffer and fail formatting again.
  See fetchmail-SA-2010-02.txt.

# FEATURES
* Fetchmail now supports a --sslcertfile <file> option to specify a "CA bundle"
  file (a file that contains trusted CA certificates). Since these bundled CA
  files do not require c_rehash to be run, they are easier to use and immune to
  OpenSSL library updates that affect the hash function.
* Fetchmail now supports a FETCHMAIL_INCLUDE_DEFAULT_X509_CA_CERTS
  environment variable to force loading the default SSL CA certificate
  locations even if --sslcertfile or --sslcertpath is used.
  If neither option is in effect, fetchmail loads the default locations.

# REGRESSION FIX
* Fix string handling in rcfile scanner, which caused fetchmail to misparse a
  run control file in certain circumstances.  Fixes BerliOS bug #14257.
  Patch by Michael Banack.  This fixes a regression introduced before 6.3.0.

# BUG FIXES
* Plug memory leak when using a "defaults" entry in the run control file.
* Do not print SSL certificate mismatches unless verbose or --sslcertck is
  enabled.
* Do not lose "set invisible" in fetchmailconf. (Michael Barnack)

# CHANGES
* Usability: SSL certificate chains are fully printed in -v -v mode, and there
  are now helpful pointers to --sslcertpath and c_rehash for "unable to get
  local issuer certificate" and self-signed certificates -- these usually hint
  to missing root signing CAs in the certs directory.
* Several fixes for compiler (GCC, Intel C++, CLang) and autotools warnings
* Memory allocation failures will now cause abnormal program abort (SIGABRT),
  no longer an exit with unspecified code.

# DOCUMENTATION
* Fix table of global option to read "set softbounce" where there used to be a
  2nd copy of "set spambounce".  Patch by Michael Banack, BerliOS Bug #17067.
* In the --sslcertpath description, mention that OpenSSL upgrade (and a 0.9.X
  to 1.0.0 upgrade in particular) may require running c_rehash.

# TRANSLATION UPDATES
  [zh_CN] Chinese/simplified (Ji Zheng-Yu)
  [cs]    Czech (Petr Pisar)
  [nl]    Dutch (Erwin Poeze)
  [fr]    French (Frédéric Marchal)
  [de]    German
  [id]    Indonesian (Andhika Padmawan)
  [it]    Italian (Vincenzo Campanella)
  [ja]    Japanese (Takeshi Hamasaki)
  [pl]    Polish (Jakub Bogusz)
  [sk]    Slovak (Marcel Telka)
  [vi]    Vietnamese (Clytie Siddall)

# KNOWN BUGS AND WORKAROUNDS:
  (this section floats upwards through the NEWS file so it stays with the
  current release information - however, it was stuck with 6.3.8 for a while)
* fetchmail does not handle messages without Message-ID header well
  (See sourceforge.net bug #780933)
* BSMTP is mostly untested and errors can cause corrupt output.
* Sun Workshop 6 (SPARC) is known to miscompile the configuration file lexer in
  64-bit mode.  Either compile 32-bit code or use GCC to compile 64-bit
  fetchmail.  Note that fetchmail doesn't take advantage of 64-bit code,
  so compiling 32-bit SPARC code should not cause any difficulties.
* fetchmail does not track pending deletes over crashes
* the command line interface is sometimes a bit stubborn, for instance,
  fetchmail -s doesn't work with a daemon running


By popular demand, diffs from the previous release have been omitted.

-- 
Matthias Andree

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