- Announcing Privoxy v.3.0.11
------------------------------------------------------------------
-
-3.0.11 is a stable release which includes many enhancements but no major
-new features. The most prominent new feature is support for "keep-alive"
-connection. There are many small improvements.
+ Announcing Privoxy 3.0.24 stable
+--------------------------------------------------------------------
-See http://www.privoxy.org/3.0.11/user-manual/whatsnew.html for details.
+Privoxy 3.0.24 stable contains a couple of new features but is
+mainly a bug-fix release. Two of the fixed bugs are security issues
+and may be used to remotely trigger crashes on platforms that
+carefully check memory accesses (most don't).
--------------------------------------------------------------------
ChangeLog for Privoxy
--------------------------------------------------------------------
-
-*** Version 3.0.11 ***
-
-- On most platforms, outgoing connections can be kept alive and
- reused if the server supports it. Whether or not this improves
- things depends on the connection.
-- When dropping privileges, membership in supplementary groups
- is given up as well. Not doing that can lead to Privoxy running
- with more rights than necessary and violates the principle of
- least privilege. Users of the --user option are advised to update.
- Thanks to Matthias Drochner for reporting the problem,
- providing the initial patch and testing the final version.
-- Passing invalid users or groups with the --user option
- didn't lead to program exit. Regression introduced in 3.0.7.
-- The match all section has been moved from default.action
- to a new file called match-all.action. As a result the
- default.action no longer needs to be touched by the user
- and can be safely overwritten by updates.
-- The standard.action file has been removed. Its content
- is now part of the default.action file.
-- In some situations the logged content length was slightly too low.
-- Crunched requests are logged with their own log level.
- If you used "debug 1" in the past, you'll probably want
- to additionally enable "debug 1024", otherwise only passed
- requests will be logged. If you only care about crunched
- requests, simply replace "debug 1" with "debug 1024".
-- The crunch reason has been moved to the beginning of the
- crunch message. For HTTP URLs, the protocol is logged as well.
-- Log messages are shortened by printing the thread id on its
- own (as opposed to putting it inside the string "Privoxy()").
-- The config option socket-timeout has been added to control
- the time Privoxy waits for data to arrive on a socket.
-- Support for remote toggling is controlled by the configure
- option --disable-toggle only. In previous versions it also
- depended on the action editor and thus configuring with the
- --disable-editor option would disable remote toggling support
- as well.
-- Requests with invalid HTTP versions are rejected.
-- The template symbol @date@ can be used to include a date(1)-like
- time string. Initial patch submitted by Endre Szabo.
-- Responses from shoutcast servers are accepted again.
- Problem reported and fix suggested by Stefan.
-- The hide-forwarded-for-headers action has been replaced with
- the change-x-forwarded-for{} action which can also be used to
- add X-Forwarded-For headers. The latter functionality already
- existed in Privoxy versions prior to 3.0.7 but has been removed
- as it was often used unintentionally (by not using the
- hide-forwarded-for-headers action).
-- A "clear log" view option was added to the mingw32 version
- to clear out all of the lines in the Privoxy log window.
- Based on a patch submitted by T Ford.
-- The mingw32 version uses "critical sections" now, which prevents
- log message corruption under load. As a side effect, the
- "no thread-safe PRNG" warning could be removed as well.
-- The mingw32 version's task bar icon is crossed out and
- the color changed to gray if Privoxy is toggled off.
+- Security fixes (denial of service):
+ - Prevent invalid reads in case of corrupt chunk-encoded content.
+ CVE-2016-1982. Bug discovered with afl-fuzz and AddressSanitizer.
+ - Remove empty Host headers in client requests.
+ Previously they would result in invalid reads. CVE-2016-1983.
+ Bug discovered with afl-fuzz and AddressSanitizer.
+
+- Bug fixes:
+ - When using socks5t, send the request body optimistically as well.
+ Previously the request body wasn't guaranteed to be sent at all
+ and the error message incorrectly blamed the server.
+ Fixes #1686 reported by Peter Müller and G4JC.
+ - Fixed buffer scaling in execute_external_filter() that could lead
+ to crashes. Submitted by Yang Xia in #892.
+ - Fixed crashes when executing external filters on platforms like
+ Mac OS X. Reported by Jonathan McKenzie on ijbswa-users@.
+ - Properly parse ACL directives with ports when compiled with HAVE_RFC2553.
+ Previously the port wasn't removed from the host and in case of
+ 'permit-access 127.0.0.1 example.org:80' Privoxy would try (and fail)
+ to resolve "example.org:80" instead of example.org.
+ Reported by Pak Chan on ijbswa-users@.
+ - Check requests more carefully before serving them forcefully
+ when blocks aren't enforced. Privoxy always adds the force token
+ at the beginning of the path, but would previously accept it anywhere
+ in the request line. This could result in requests being served that
+ should be blocked. For example in case of pages that were loaded with
+ force and contained JavaScript to create additionally requests that
+ embed the origin URL (thus inheriting the force prefix).
+ The bug is not considered a security issue and the fix does not make
+ it harder for remote sites to intentionally circumvent blocks if
+ Privoxy isn't configured to enforce them.
+ Fixes #1695 reported by Korda.
+ - Normalize the request line in intercepted requests to make rewriting
+ the destination more convenient. Previously rewrites for intercepted
+ requests were expected to fail unless $hostport was being used, but
+ they failed "the wrong way" and would result in an out-of-memory
+ message (vanilla host patterns) or a crash (extended host patterns).
+ Reported by "Guybrush Threepwood" in #1694.
+ - Enable socket lingering for the correct socket.
+ Previously it was repeatedly enabled for the listen socket
+ instead of for the accepted socket. The bug was found by
+ code inspection and did not cause any (reported) issues.
+ - Detect and reject parameters for parameter-less actions.
+ Previously they were silently ignored.
+ - Fixed invalid reads in internal and outdated pcre code.
+ Found with afl-fuzz and AddressSanitizer.
+ - Prevent invalid read when loading invalid action files.
+ Found with afl-fuzz and AddressSanitizer.
+ - Windows build: Use the correct function to close the event handle.
+ It's unclear if this bug had a negative impact on Privoxy's behaviour.
+ Reported by Jarry Xu in #891.
+ - In case of invalid forward-socks5(t) directives, use the
+ correct directive name in the error messages. Previously they
+ referred to forward-socks4t failures.
+ Reported by Joel Verhagen in #889.
+
+- General improvements:
+ - Set NO_DELAY flag for the accepting socket. This significantly reduces
+ the latency if the operating system is not configured to set the flag
+ by default. Reported by Johan Sintorn in #894.
+ - Allow to build with mingw x86_64. Submitted by Rustam Abdullaev in #135.
+ - Introduce the new forwarding type 'forward-webserver'.
+ Currently it is only supported by the forward-override{} action and
+ there's no config directive with the same name. The forwarding type
+ is similar to 'forward', but the request line only contains the path
+ instead of the complete URL.
+ - The CGI editor no longer treats 'standard.action' special.
+ Nowadays the official "standards" are part of default.action
+ and there's no obvious reason to disallow editing them through
+ the cgi editor anyway (if the user decided that the lack of
+ authentication isn't an issue in her environment).
+ - Improved error messages when rejecting intercepted requests
+ with unknown destination.
+ - A couple of log messages now include the number of active threads.
+ - Removed non-standard Proxy-Agent headers in HTTP snipplets
+ to make testing more convenient.
+ - Include the error code for pcre errors Privoxy does not recognize.
+ - Config directives with numerical arguments are checked more carefully.
+ - Privoxy's malloc() wrapper has been changed to prevent zero-size
+ allocations which should only occur as the result of bugs.
+ - Various cosmetic changes.
+
+- Action file improvements:
+ - Unblock ".deutschlandradiokultur.de/".
+ Reported by u302320 in #924.
+ - Add two fast-redirect exceptions for "yandex.ru".
+ - Disable filter{banners-by-size} for ".plasmaservice.de/".
+ - Unblock "klikki.fi/adv/".
+ - Block requests for "resources.infolinks.com/".
+ Reported by "Black Rider" on ijbswa-users@.
+ - Block a bunch of criteo domains.
+ Reported by Black Rider.
+ - Block "abs.proxistore.com/abe/".
+ Reported by Black Rider.
+ - Disable filter{banners-by-size} for ".black-mosquito.org/".
+ - Disable fast-redirects for "disqus.com/".
+
+- Documentation improvements:
+ - FAQ: Explicitly point fingers at ASUS as an example of a
+ company that has been reported to force malware based on
+ Privoxy upon its customers.
+ - Correctly document the action type for a bunch of "multi-value"
+ actions that were incorrectly documented to be "parameterized".
+ Reported by Gregory Seidman on ijbswa-users@.
+ - Fixed the documented type of the forward-override{} action
+ which is obviously 'parameterized'.
+
+- Website improvements:
+ - Users who don't trust binaries served by SourceForge
+ can get them from a mirror. Migrating away from SourceForge
+ is planned for 2016 (TODO list item #53).
+ - The website is now available as onion service
+ (http://jvauzb4sb3bwlsnc.onion/).
-----------------------------------------------------------------
About Privoxy:
-----------------------------------------------------------------
-Privoxy is a web proxy with advanced filtering capabilities for
-protecting privacy, modifying web page data, managing cookies,
-controlling access, and removing ads, banners, pop-ups and other
-obnoxious Internet junk. Privoxy has a very flexible
-configuration and can be customized to suit individual needs
-and tastes. Privoxy has application for both stand-alone systems
-and multi-user networks.
+Privoxy is a non-caching web proxy with advanced filtering capabilities for
+enhancing privacy, modifying web page data and HTTP headers, controlling
+access, and removing ads and other obnoxious Internet junk. Privoxy has a
+flexible configuration and can be customized to suit individual needs and
+tastes. It has application for both stand-alone systems and multi-user
+networks.
-Privoxy is based on Internet Junkbuster (tm).
+Privoxy is Free Software and licensed under the GNU GPLv2.
-At present, Privoxy is known to run on Windows(95, 98, ME, 2000,
-XP, Vista), Linux (Ubuntu, RedHat, SuSE, Debian, Fedora, Gentoo and
-others), Mac OSX, OS/2, AmigaOS, FreeBSD, NetBSD, OpenBSD, Solaris, and
-various other flavors of Unix.
+Our TODO list is rather long. Helping hands and donations are welcome:
-In addition to the core features of ad blocking and cookie management, Privoxy provides many supplemental features, that give the end-user more control, more privacy and more freedom:
+ * http://www.privoxy.org/faq/general.html#PARTICIPATE
+ * http://www.privoxy.org/faq/general.html#DONATE
- * Can keep outgoing connections alive and reuse them later on.
+At present, Privoxy is known to run on Windows 95 and later versions
+(98, ME, 2000, XP, Vista, Windows 7 etc.), GNU/Linux (RedHat, SuSE,
+Debian, Fedora, Gentoo, Slackware and others), Mac OS X (10.4 and
+upwards on PPC and Intel processors), OS/2, Haiku, DragonFly, ElectroBSD,
+FreeBSD, NetBSD, OpenBSD, Solaris, and various other flavors of Unix.
- * Supports tagging which allows to change the behaviour based on client
- and server headers.
+In addition to the core features of ad blocking and cookie management,
+Privoxy provides many supplemental features, that give the end-user
+more control, more privacy and more freedom:
- * Can be run as an "intercepting" proxy, which obviates the need to
- configure browsers individually.
+ * Supports "Connection: keep-alive". Outgoing connections can be kept
+ alive independently from the client. Currently not available on all
+ platforms.
- * Sophisticated actions and filters for manipulating both server and
- client headers.
+ * Supports IPv6, provided the operating system does so too,
+ and the configure script detects it.
- * Can be chained with other proxies.
+ * Supports tagging which allows to change the behaviour based on client
+ and server headers.
- * Integrated browser based configuration and control utility at
- http://config.privoxy.org/ (shortcut: http://p.p/). Browser-based
- tracing of rule and filter effects. Remote toggling.
+ * Can be run as an "intercepting" proxy, which obviates the need to
+ configure browsers individually.
- * Web page filtering (text replacements, removes banners based on size,
- invisible "web-bugs", JavaScript and HTML annoyances, pop-up windows,
- etc.)
+ * Sophisticated actions and filters for manipulating both server and
+ client headers.
- * Modularized configuration that allows for standard settings and user
- settings to reside in separate files, so that installing updated actions
- files won't overwrite individual user settings.
+ * Can be chained with other proxies.
- * Support for Perl Compatible Regular Expressions in the configuration
- files, and a more sophisticated and flexible configuration syntax.
+ * Integrated browser based configuration and control utility at
+ http://config.privoxy.org/ (shortcut: http://p.p/). Browser-based
+ tracing of rule and filter effects. Remote toggling.
- * Improved cookie management features (e.g. session based cookies).
+ * Web page filtering (text replacements, removes banners based on size,
+ invisible "web-bugs" and HTML annoyances, etc.)
- * GIF de-animation.
+ * Modularized configuration that allows for standard settings and user
+ settings to reside in separate files, so that installing updated actions
+ files won't overwrite individual user settings.
- * Bypass many click-tracking scripts (avoids script redirection).
+ * Support for Perl Compatible Regular Expressions in the configuration
+ files, and a more sophisticated and flexible configuration syntax.
- * Multi-threaded (POSIX and native threads).
+ * GIF de-animation.
- * User-customizable HTML templates for most proxy-generated pages (e.g.
- "blocked" page).
+ * Bypass many click-tracking scripts (avoids script redirection).
- * Auto-detection and re-reading of config file changes.
+ * User-customizable HTML templates for most proxy-generated pages (e.g.
+ "blocked" page).
- * Improved signal handling, and a true daemon mode (Unix).
-
- * Every feature now controllable on a per-site or per-location basis,
- configuration more powerful and versatile over-all.
+ * Auto-detection and re-reading of config file changes.
+ * Most features are controllable on a per-site or per-location basis.
+
-Download location:
- http://sourceforge.net/project/showfiles.php?group_id=11118
-
Home Page:
http://www.privoxy.org/
-
- Privoxy Developers <ijbswa-developers@lists.sourceforge.net>
projects / privoxy.git / blobdiff