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-
<div class="SECT1">
- <h1 class="SECT1"><a name="WHATSNEW" id="WHATSNEW">3. What's New in this
- Release</a></h1>
-
- <p><span class="APPLICATION">Privoxy 3.0.25</span> beta introduces
- client-specific tags and includes a couple of minor improvements. It will
- be followed by a stable release in the near future.</p>
-
+ <h1 class="SECT1"><a name="WHATSNEW" id="WHATSNEW">3. What's New in this Release</a></h1>
+ <p><span class="APPLICATION">Privoxy 3.0.32</span> fixes multiple DoS issues and a couple of other bugs. The issues
+ also affect earlier Privoxy releases.</p>
+ <p>Changes in <span class="APPLICATION">Privoxy 3.0.32</span> stable:</p>
<ul>
<li>
- <p>Bug fixes:</p>
-
+ <p>Security/Reliability:</p>
<ul>
<li>
- <p>Always use the current toggle state for new requests.
- Previously new requests on reused connections inherited the
- toggle state from the previous request even though the toggle
- state could have changed. Reported by Robert Klemme.</p>
- </li>
-
- <li>
- <p>Fixed two buffer-overflows in the (deprecated) static pcre
- code. These bugs are not considered security issues as the input
- is trusted. Found with afl-fuzz and ASAN.</p>
- </li>
- </ul>
- </li>
-
- <li>
- <p>General improvements:</p>
-
- <ul>
- <li>
- <p>Added support for client-specific tags which allow Privoxy
- admins to pre-define tags that are set for all requests from
- clients that previously opted in through the CGI interface. They
- are useful in multi-user setups where admins may want to allow
- users to disable certain actions and filters for themselves
- without affecting others. In single-user setups they are useful
- to allow more fine-grained toggling. For example to disable
- request blocking while still crunching cookies, or to disable
- experimental filters only. This is an experimental feature, the
- syntax and behaviour may change in future versions. Sponsored by
- Robert Klemme.</p>
- </li>
-
- <li>
- <p>Dynamic filters and taggers now support a $listen-address
- variable which contains the address the request came in on. For
- external filters the variable is called $PRIVOXY_LISTEN_ADDRESS.
- Original patch contributed by pursievro.</p>
- </li>
-
- <li>
- <p>Add client-header-tagger 'listen-address'.</p>
- </li>
-
- <li>
- <p>Include the listen-address in the log message when logging new
- requests. Patch contributed by pursievro.</p>
- </li>
-
- <li>
- <p>Turn invalid max-client-connections values into fatal
- errors.</p>
+ <p>ssplit(): Remove an assertion that could be triggered with a crafted CGI request. Commit 2256d7b4d67.
+ OVE-20210203-0001. Reported by: Joshua Rogers (Opera)</p>
</li>
-
<li>
- <p>The show-status page now shows whether or not dates before
- 1970 and after 2038 are expected to be handled properly. This is
- mainly useful for Privoxy-Regression-Test but could also come
- handy when dealing with time-related support requests.</p>
+ <p>cgi_send_banner(): Overrule invalid image types. Prevents a crash with a crafted CGI request if Privoxy
+ is toggled off. Commit e711c505c48. OVE-20210206-0001. Reported by: Joshua Rogers (Opera)</p>
</li>
-
<li>
- <p>On Mac OS X the thread id in log messages are more likely to
- be unique now.</p>
+ <p>socks5_connect(): Don't try to send credentials when none are configured. Fixes a crash due to a
+ NULL-pointer dereference when the socks server misbehaves. Commit 85817cc55b9. OVE-20210207-0001. Reported
+ by: Joshua Rogers (Opera)</p>
</li>
-
<li>
- <p>When complaining about missing filters, the filter type is
- logged as well.</p>
+ <p>chunked_body_is_complete(): Prevent an invalid read of size two. Commit a912ba7bc9c. OVE-20210205-0001.
+ Reported by: Joshua Rogers (Opera)</p>
</li>
-
<li>
- <p>A couple of harmless coverity warnings were silenced (CID
- #161202, CID #161203, CID #161211).</p>
+ <p>Obsolete pcre: Prevent invalid memory accesses with an invalid pattern passed to pcre_compile(). Note
+ that the obsolete pcre code is scheduled to be removed before the 3.0.33 release. There has been a warning
+ since since 2008 already. Commit 28512e5b624. OVE-20210222-0001. Reported by: Joshua Rogers (Opera)</p>
</li>
</ul>
</li>
-
<li>
- <p>Action file improvements:</p>
-
+ <p>Bug fixes:</p>
<ul>
<li>
- <p>Filtering is disabled for Range requests to let download
- resumption and Windows updates work with the default
- configuration.</p>
+ <p>Properly parse the client-tag-lifetime directive. Previously it was not accepted as an obsolete hash
+ value was being used. Reported by: Joshua Rogers (Opera)</p>
</li>
-
<li>
- <p>Unblock ".ardmediathek.de/". Reported by ThTomate in #932.</p>
+ <p>decompress_iob(): Prevent reading of uninitialized data. Reported by: Joshua Rogers (Opera).</p>
</li>
- </ul>
- </li>
-
- <li>
- <p>Documentation improvements:</p>
-
- <ul>
<li>
- <p>Add FAQ entry for crashes caused by memory limits.</p>
+ <p>decompress_iob(): Don't advance cur past eod when looking for the end of the file name and comment.</p>
</li>
-
<li>
- <p>Remove obsolete FAQ entry about a bug in PHP 4.2.3.</p>
+ <p>decompress_iob(): Cast value to unsigned char before shifting. Prevents a left-shift of a negative value
+ which is undefined behaviour. Reported by: Joshua Rogers (Opera)</p>
</li>
-
<li>
- <p>Mention the new mailing lists were appropriate. As the
- archives have not been migrated, continue to mention the archives
- at SF in the contacting section for now.</p>
+ <p>gif_deanimate(): Confirm that that we have enough data before doing any work. Fixes a crash when fuzzing
+ with an empty document. Reported by: Joshua Rogers (Opera).</p>
</li>
-
<li>
- <p>Note that the templates should be adjusted if Privoxy is
- running as intercepting proxy without getting all requests.</p>
+ <p>buf_copy(): Fail if there's no data to write or nothing to do. Prevents undefined behaviour "applying
+ zero offset to null pointer". Reported by: Joshua Rogers (Opera)</p>
</li>
-
<li>
- <p>A bunch of links were converted to https://.</p>
+ <p>log_error(): Treat LOG_LEVEL_FATAL as fatal even when --stfu is being used while fuzzing. Reported by:
+ Joshua Rogers (Opera).</p>
</li>
-
<li>
- <p>Rephrase onion service paragraph to make it more obvious that
- Tor is involved and that the whole website (and not just the
- homepage) is available as onion service.</p>
+ <p>Respect DESTDIR when considering whether or not to install config files with ".new" extension.</p>
</li>
-
<li>
- <p>Streamline the "More information" section on the homepage
- further by additionally ditching the link to the 'See also'
- section of the user manual. The section contains mostly links
- that are directly reachable from the homepage already and the
- rest is not significant enough to get a link from the
- homepage.</p>
+ <p>OpenSSL ssl_store_cert(): Fix two error messages.</p>
</li>
-
<li>
- <p>Change the add-header{} example to set the DNT header and use
- a complete section to make copy and pasting more convenient. Add
- a comment to make it obvious that adding the header is not
- recommended for obvious reasons. Using the DNT header as example
- was suggested by Leo Wzukw.</p>
+ <p>Fix a couple of format specifiers.</p>
</li>
-
<li>
- <p>Streamline the support-and-service template Instead of linking
- to the various support trackers (whose URLs hopefully change
- soon), link to the contact section of the user manual to increase
- the chances that users actually read it.</p>
+ <p>Silence compiler warnings when compiling with NDEBUG.</p>
</li>
-
<li>
- <p>Add a FAQ entry for tainted sockets.</p>
+ <p>fuzz_server_header(): Fix compiler warning.</p>
</li>
-
<li>
- <p>More sections in the documentation have stable URLs now.</p>
+ <p>fuzz_client_header(): Fix compiler warning.</p>
</li>
-
<li>
- <p>FAQ: Explain why 'ping config.privoxy.org' is not expected to
- reach a local Privoxy installation.</p>
+ <p>cgi_send_user_manual(): Also reject requests if the user-manual directive specifies a https:// URL.
+ Previously Privoxy would try and fail to open a local file.</p>
</li>
-
+ </ul>
+ </li>
+ <li>
+ <p>General improvements:</p>
+ <ul>
<li>
- <p>Note that donations done through Zwiebelfreunde e.V. currently
- can't be checked automatically.</p>
+ <p>Log the TLS version and the the cipher when debug 2 is enabled..</p>
</li>
-
<li>
- <p>Updated section regarding starting Privoxy under OS X.</p>
+ <p>ssl_send_certificate_error(): Respect HEAD requests by not sending a body.</p>
</li>
-
<li>
- <p>Use dedicated start instructions for FreeBSD and
- ElectroBSD.</p>
+ <p>ssl_send_certificate_error(): End the body with a single new line.</p>
</li>
-
<li>
- <p>Removed release instructions for AIX. They haven't been
- working for years and unsurprisingly nobody seems to care.</p>
+ <p>serve(): Increase the chances that the host is logged when closing a server socket.</p>
</li>
-
<li>
- <p>Removed obsolete reference to the solaris-dist target.</p>
+ <p>handle_established_connection(): Add parentheses to clarify an expression Suggested by: David
+ Binderman</p>
</li>
-
<li>
- <p>Updated the release instructions for FreeBSD.</p>
+ <p>continue_https_chat(): Explicitly unset CSP_FLAG_CLIENT_CONNECTION_KEEP_ALIVE if
+ process_encrypted_request() fails. This makes it more obvious that the connection will not be reused.
+ Previously serve() relied on CSP_FLAG_SERVER_CONTENT_LENGTH_SET and CSP_FLAG_CHUNKED being unset. Inspired
+ by a patch from Joshua Rogers (Opera).</p>
</li>
-
<li>
- <p>Removed unfinished release instructions for Amiga OS and HP-UX
- 11.</p>
+ <p>decompress_iob(): Add periods to a couple of log messages</p>
</li>
-
<li>
- <p>Added a pointer to the Cygwin Time Machine for getting the
- last release of Cygwin version 1.5 to use for building Privoxy on
- Windows.</p>
+ <p>Terminate the body of the HTTP snipplets with a single new line instead of "\r\n".</p>
</li>
-
<li>
- <p>Various typos have been fixed.</p>
+ <p>configure: Add --with-assertions option and only enable assertions when it is used</p>
</li>
- </ul>
- </li>
-
- <li>
- <p>Infrastructure improvements:</p>
-
- <ul>
<li>
- <p>The website is no longer hosted at SourceForge and can be
- reached through https now.</p>
+ <p>windows build: Use --with-brotli and --with-mbedtls by default and enable dynamic error checking.</p>
</li>
-
<li>
- <p>The mailing lists at SourceForge have been deprecated, you can
- subscribe to the new ones at: https://lists.privoxy.org/</p>
+ <p>gif_deanimate(): Confirm we've got an image before trying to write it Saves a pointless buf_copy()
+ call.</p>
</li>
-
<li>
- <p>Migrating the remaining services from SourceForge is work in
- progress (TODO list item #53).</p>
+ <p>OpenSSL ssl_store_cert(): Remove a superfluous space before the serial number.</p>
</li>
</ul>
</li>
-
<li>
- <p>Build system improvements:</p>
-
+ <p>Action file improvements:</p>
<ul>
<li>
- <p>Add configure argument to optimistically redefine FD_SETSIZE
- with the intent to change the maximum number of client
- connections Privoxy can handle. Only works with some libcs.
- Sponsored by Robert Klemme.</p>
- </li>
-
- <li>
- <p>Let the tarball-dist target skip files in ".git".</p>
- </li>
-
- <li>
- <p>Let the tarball-dist target work in cwds other than
- current.</p>
- </li>
-
- <li>
- <p>Make the 'clean' target faster when run from a git
- repository.</p>
- </li>
-
- <li>
- <p>Include tools in the generic distribution.</p>
- </li>
-
- <li>
- <p>Let the gen-dist target work in cwds other than current.</p>
- </li>
-
- <li>
- <p>Sort find output that is used for distribution tarballs to get
- reproducible results.</p>
+ <p>Disable fast-redirects for .golem.de/</p>
</li>
-
<li>
- <p>Don't add '-src' to the name of the tar ball generated by the
- gen-dist target. The package isn't a source distribution but a
- binary package. While at it, use a variable for the name to
- reduce the chances that the various references get out of sync
- and fix the gen-upload target which was looking in the wrong
- directory.</p>
+ <p>Unblock requests to adri*.</p>
</li>
-
<li>
- <p>Add regression-tests.action to the files that are
- distributed.</p>
+ <p>Block requests for trc*.taboola.com/</p>
</li>
-
<li>
- <p>The gen-dist target which was broken since 2002 (r1.92) has
- been fixed.</p>
+ <p>Disable fast-redirects for .linkedin.com/</p>
</li>
-
+ </ul>
+ </li>
+ <li>
+ <p>Filter file improvements:</p>
+ <ul>
<li>
- <p>Remove genclspec.sh which has been obsolete since 2009.</p>
+ <p>Make the second pcrs job of the img-reorder filter greedy again. The ungreedy version broke the img tags
+ on: https://bulk.fefe.de/scalability/.</p>
</li>
-
+ </ul>
+ </li>
+ <li>
+ <p>Privoxy-Log-Parser:</p>
+ <ul>
<li>
- <p>Remove obsolete reference to Redhat spec file.</p>
+ <p>Highlight a few more messages.</p>
</li>
-
<li>
- <p>Remove the obsolete announce target which has been commented
- out years ago.</p>
+ <p>Clarify the --statistics output. The shown "Reused connections" are server connections so name them
+ appropriately.</p>
</li>
-
<li>
- <p>Let rsync skip files if the checksums match.</p>
+ <p>Bump version to 0.9.3.</p>
</li>
</ul>
</li>
-
<li>
<p>Privoxy-Regression-Test:</p>
-
<ul>
<li>
- <p>Add a "Default level offset" directive which can be used to
- change the default level by a given value. This directive affects
- all tests located after it until the end of the file or a another
- "Default level offset" directive is reached. The purpose of this
- directive is to make it more convenient to skip similar tests in
- a given file without having to remove or disable the tests
- completely.</p>
- </li>
-
- <li>
- <p>Let test level 17 depend on FEATURE_64_BIT_TIME_T instead of
- FEATURE_PTHREAD which has no direct connection to the time_t
- size.</p>
+ <p>Add the --check-bad-ssl option to the --help output.</p>
</li>
-
<li>
- <p>Fix indentation in perldoc examples.</p>
+ <p>Bump version to 0.7.3.</p>
</li>
-
+ </ul>
+ </li>
+ <li>
+ <p>Documentation:</p>
+ <ul>
<li>
- <p>Don't overlook directives in the first line of the action
- file.</p>
+ <p>Add pushing the created tag to the release steps in the developer manual.</p>
</li>
-
<li>
- <p>Bump version to 0.7.</p>
+ <p>Clarify that 'debug 32768' should be used in addition to the other debug directives when reporting
+ problems.</p>
</li>
-
<li>
- <p>Fix detection of the Privoxy version now that https:// is used
- for the website.</p>
+ <p>Add a 'Third-party licenses and copyrights' section to the user manual.</p>
</li>
</ul>
</li>
</ul>
-
<div class="SECT2">
- <h2 class="SECT2"><a name="UPGRADERSNOTE" id="UPGRADERSNOTE">3.1. Note
- to Upgraders</a></h2>
-
- <p>A quick list of things to be aware of before upgrading from earlier
- versions of <span class="APPLICATION">Privoxy</span>:</p>
-
+ <h2 class="SECT2"><a name="UPGRADERSNOTE" id="UPGRADERSNOTE">3.1. Note to Upgraders</a></h2>
+ <p>A quick list of things to be aware of before upgrading from earlier versions of <span class=
+ "APPLICATION">Privoxy</span>:</p>
<ul>
<li>
- <p>The recommended way to upgrade <span class=
- "APPLICATION">Privoxy</span> is to backup your old configuration
- files, install the new ones, verify that <span class=
- "APPLICATION">Privoxy</span> is working correctly and finally merge
- back your changes using <span class="APPLICATION">diff</span> and
- maybe <span class="APPLICATION">patch</span>.</p>
-
- <p>There are a number of new features in each <span class=
- "APPLICATION">Privoxy</span> release and most of them have to be
- explicitly enabled in the configuration files. Old configuration
- files obviously don't do that and due to syntax changes using old
- configuration files with a new <span class=
+ <p>The recommended way to upgrade <span class="APPLICATION">Privoxy</span> is to backup your old
+ configuration files, install the new ones, verify that <span class="APPLICATION">Privoxy</span> is working
+ correctly and finally merge back your changes using <span class="APPLICATION">diff</span> and maybe
+ <span class="APPLICATION">patch</span>.</p>
+ <p>There are a number of new features in each <span class="APPLICATION">Privoxy</span> release and most of
+ them have to be explicitly enabled in the configuration files. Old configuration files obviously don't do
+ that and due to syntax changes using old configuration files with a new <span class=
"APPLICATION">Privoxy</span> isn't always possible anyway.</p>
</li>
-
<li>
- <p>Note that some installers remove earlier versions completely,
- including configuration files, therefore you should really save any
- important configuration files!</p>
+ <p>Note that some installers remove earlier versions completely, including configuration files, therefore you
+ should really save any important configuration files!</p>
</li>
-
<li>
- <p>On the other hand, other installers don't overwrite existing
- configuration files, thinking you will want to do that
- yourself.</p>
+ <p>On the other hand, other installers don't overwrite existing configuration files, thinking you will want
+ to do that yourself.</p>
</li>
-
<li>
- <p>In the default configuration only fatal errors are logged now.
- You can change that in the <a href="config.html#DEBUG">debug
- section</a> of the configuration file. You may also want to enable
- more verbose logging until you verified that the new <span class=
- "APPLICATION">Privoxy</span> version is working as expected.</p>
+ <p>In the default configuration only fatal errors are logged now. You can change that in the <a href=
+ "config.html#DEBUG">debug section</a> of the configuration file. You may also want to enable more verbose
+ logging until you verified that the new <span class="APPLICATION">Privoxy</span> version is working as
+ expected.</p>
</li>
-
<li>
- <p>Three other config file settings are now off by default:
- <a href="config.html#ENABLE-REMOTE-TOGGLE">enable-remote-toggle</a>,
- <a href=
- "config.html#ENABLE-REMOTE-HTTP-TOGGLE">enable-remote-http-toggle</a>,
- and <a href=
- "config.html#ENABLE-EDIT-ACTIONS">enable-edit-actions</a>. If you
- use or want these, you will need to explicitly enable them, and be
- aware of the security issues involved.</p>
+ <p>Three other config file settings are now off by default: <a href=
+ "config.html#ENABLE-REMOTE-TOGGLE">enable-remote-toggle</a>, <a href=
+ "config.html#ENABLE-REMOTE-HTTP-TOGGLE">enable-remote-http-toggle</a>, and <a href=
+ "config.html#ENABLE-EDIT-ACTIONS">enable-edit-actions</a>. If you use or want these, you will need to
+ explicitly enable them, and be aware of the security issues involved.</p>
</li>
</ul>
</div>
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