- Announcing Privoxy v.3.0.17 stable
------------------------------------------------------------------
-
-This is mainly a bug-fix release for the previously released Privoxy 3.0.16.
-
-It contains fixes for two bugs that could cause connections to hang under
-certain circumstances when keep-alive support was enabled, until they timed
-out or where closed by the server.
+ Announcing Privoxy 3.0.24 stable
+--------------------------------------------------------------------
-See http://www.privoxy.org/3.0.17/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 3.0.17 Stable ***
-
-- Fixed last-chunk-detection for responses where the content was small
- enough to be read with the body, causing Privoxy to wait for the
- end of the content until the server closed the connection.
- Reported by "Karsten" in #3028326.
-- Responses with status code 204 weren't properly detected as body-less
- like RFC2616 mandates. Like the previous bug, this caused Privoxy
- to wait for the end of the content until the server closed the connection.
- Fixes #3022042 and #3025553, reported by a user with no visible name.
- Most likely also fixes a bunch of other AJAX-related problem reports
- that got closed in the past due to insufficient information and lack
- of feedback.
-- Fixed an ACL bug that made it impossible to build a blacklist.
- Usually the ACL directives are used in a whitelist, which worked
- as expected, but blacklisting is still useful for public proxies
- where one only needs to deny known abusers access.
-- Added LOG_LEVEL_RECEIVED to log the not-yet-parsed data read from the
- network. This should make debugging various parsing issues a lot easier.
-- The IPv6 code is enabled by default on Windows versions that support it.
- Patch submitted by oCameLo in #2942729.
-- In mingw32 versions, the user.filter file is reachable through the
- GUI, just like default.filter is. Feature request 3040263.
-- Added the configure option --enable-large-file-support to set a few
- defines that are required by platforms like GNU/Linux to support files
- larger then 2GB. Mainly interesting for users without proper logfile
- management.
-- Logging with "debug 16" no longer stops at the first nul byte which is
- pretty useless. Non-printable characters are replaced with their hex value
- so the result can't span multiple lines making parsing them harder then
- necessary.
-- Privoxy logs when reading an action, filter or trust file.
-- Fixed incorrect regression test markup which caused a test in
- 3.0.16 to fail while Privoxy itself was working correctly.
- While Privoxy accepts hide-referer, too, the action name is actually
- hide-referrer which is also the name used one the final results page,
- where the test expected the alias.
-
-- CGI interface improvements:
- - In finish_http_response(), continue to add the 'Connection: close'
- header if the client connection will not be kept alive.
- Anonymously pointed out in #2987454.
- - Apostrophes in block messages no longer cause parse errors
- when the blocked page is viewed with JavaScript enabled.
- Reported by dg1727 in #3062296.
- - Fix a bunch of anchors that used underscores instead of dashes.
- - Allow to keep the client connection alive after crunching the previous request.
- Already opened server connections can be kept alive, too.
- - In cgi_show_url_info(), don't forget to prefix URLs that only contain
- http:// or https:// in the path. Fixes #2975765 reported by Adam Piggott.
- - Show the 404 CGI page if cgi_send_user_manual() is called while
- local user manual delivery is disabled.
+- 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:
- - Enable user.filter by default. Suggested by David White in #3001830.
- - Block .sitestat.com/. Reported by johnd16 in #3002725.
- - Block .atemda.com/. Reported by johnd16 in #3002723.
- - Block js.adlink.net/. Reported by johnd16 in #3002720.
- - Block .analytics.yahoo.com/. Reported by johnd16 in #3002713.
- - Block sb.scorecardresearch.com, too. Reported by dg1727 in #2992652.
- - Fix problems noticed on Yahoo mail and news pages.
- - Remove the too broad yahoo section, only keeping the
- fast-redirects exception as discussed on ijbswa-devel@.
- - Don't block adesklets.sourceforge.net. Reported in #2974204.
- - Block chartbeat ping tracking. Reported in #2975895.
- - Tag CSS and image requests with cautious and medium settings, too.
- - Don't handle view.atdmt.com as image. It's used for click-throughs
- so users should be able to "go there anyway".
- Reported by Adam Piggott in #2975927.
- - Also let the refresh-tags filter remove invalid refresh tags where
- the 'url=' part is missing. Anonymously reported in #2986382.
- While at it, update the description to mention the fact that only
- refresh tags with refresh times above 9 seconds are covered.
- - javascript needs to be blocked with +handle-as-empty-document to
- work around Firefox bug 492459. So move .js blockers from
- +block{Might be a web-bug.} -handle-as-empty-document
- to
- +block{Might be a web-bug.} +handle-as-empty-document
- - ijbswa-Feature Requests-3006719 - Block 160x578 Banners.
- - Block another omniture tracking domain
- - Added a range-requests tagger.
- - Added two sections to get Flickr's Ajax interface working with
- default pre-settings. If you change the configuration to block
- cookies by default, you'll need additional exceptions.
- Reported by Mathias Homann in #3101419 and by Patrick on ijbswa-users@
+ - 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:
- - Explicitly mention how to match all URLs.
- - Consistently recommend socks5 in the Tor FAQ entry and mention
- its advantage compared to socks4a. Reported by David in #2960129.
- - Slightly improve the explanation of why filtering may appear
- slower than it is.
- - Grammar fixes for the ACL section.
-
-- Privoxy-Log-Parser improvements:
- - Also gather statistics for blocked and redirected requests.
- - Provide the percentage of keep-alive offers the client accepted.
- - Add a --url-statistics-threshold option.
- - Also gather statistics for ressources, methods, and HTTP versions
- used by the client.
- - Add a --host-statistics-threshold option to also gather
- statistics about how many request where made per host.
- - Fix a bug in handle_loglevel_header() where a 'scan: ' got lost.
- - Add a --shorten-thread-ids option to replace the thread id with
- a decimal number.
- - Accept and ignore: Looks like we got the last chunk together
- with the server headers. We better stop reading.
- - Accept and ignore: Continue hack in da house.
- - Accept and higlight: Rejecting connection from 10.0.0.2.
- Maximum number of connections reached.
- - Accept and highlight: Loading actions file: /usr/local/etc/privoxy/default.action
- - Accept and highlight: Loading filter file: /usr/local/etc/privoxy/default.filter
- - Accept and highlight: Killed all-caps Host header line: HOST: bestproxydb.com
- - Accept and highlight: Reducing expected bytes to 0. Marking
- the server socket tainted after throwing 4 bytes away.
- - Accept: Merged multiple header lines to: 'X-FORWARDED-PROTO: http X-HOST: 127.0.0.1'
-
-- Code cleanups:
- - Remove the next member from the client_state struct. Only the main
- thread needs access to all client states so give it its own struct.
- - Garbage-collect request_contains_null_bytes().
- - Ditch redundant code in unload_configfile().
- - Ditch LogGetURLUnderCursor() which doesn't seem to be used anywhere.
- - In write_socket(), remove the write-only variable write_len in
- an ifdef __OS2__ block. Spotted by cppcheck.
- - In connect_to(), don't declare the variable 'flags' on OS/2 where
- it isn't used. Spotted by cppcheck.
- - Limit the scope of various variables. Spotted by cppcheck.
- - In add_to_iob(), turn an interestingly looking for loop into a
- boring while loop.
- - Code cleanup in preparation for external filters.
- - In listen_loop(), mention the socket on which we accepted the
- connection, not just the source IP address.
- - In write_socket(), also log the socket we're writing to.
- - In log_error(), assert that escaped characters get logged
- completely or not at all.
- - In log_error(), assert that ival and sval have reasonable values.
- There's no reason not to abort() if they don't.
- - Remove an incorrect cgi_error_unknown() call in a
- cannnot-happen-situation in send_crunch_response().
- - Clean up white-space in http_response definition and
- move the crunch_reason to the beginning.
- - Turn http_response.reason into an enum and rename it
- to http_response.crunch_reason.
- - Silence a 'gcc (Debian 4.3.2-1.1) 4.3.2' warning on i686 GNU/Linux.
-
-- GNUmakefile improvements:
- - Use $(SSH) instead of ssh, so one only needs to specify a username once.
- - Removed references to the action feedback thingy that hasn't been
- working for years.
- - Consistently use shell.sourceforge.net instead of shell.sf.net so
- one doesn't need to check server fingerprints twice.
- - Removed GNUisms in the webserver and webactions targets so they
- work with standard tar.
+ - 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 Free Software and licensed under the GNU GPLv2.
-Privoxy is an associated project of Software in the Public Interest (SPI).
-
-Helping hands and donations are welcome:
+Our TODO list is rather long. Helping hands and donations are welcome:
* http://www.privoxy.org/faq/general.html#PARTICIPATE
* http://www.privoxy.org/faq/general.html#DONATE
-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.
+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.
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:
+ * Supports "Connection: keep-alive". Outgoing connections can be kept
+ alive independently from the client. Currently not available on all
+ platforms.
- * Supports "Connection: keep-alive". Outgoing connections can be kept
- alive independently from the client. Currently not available on all
- platforms.
+ * Supports IPv6, provided the operating system does so too,
+ and the configure script detects it.
- * Supports IPv6, provided the operating system does so too,
- and the configure script detects it.
+ * Supports tagging which allows to change the behaviour based on client
+ and server headers.
- * Supports tagging which allows to change the behaviour based on client
- and server headers.
+ * Can be run as an "intercepting" proxy, which obviates the need to
+ configure browsers individually.
- * Can be run as an "intercepting" proxy, which obviates the need to
- configure browsers individually.
+ * Sophisticated actions and filters for manipulating both server and
+ client headers.
- * Sophisticated actions and filters for manipulating both server and
- client headers.
+ * Can be chained with other proxies.
- * Can be chained with other proxies.
+ * 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.
- * 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.
+ * Web page filtering (text replacements, removes banners based on size,
+ invisible "web-bugs" and HTML annoyances, etc.)
- * Web page filtering (text replacements, removes banners based on size,
- invisible <quote>web-bugs</quote> and HTML annoyances, etc.)
+ * 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.
- * 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.
+ * Support for Perl Compatible Regular Expressions in the configuration
+ files, and a more sophisticated and flexible configuration syntax.
- * Support for Perl Compatible Regular Expressions in the configuration
- files, and a more sophisticated and flexible configuration syntax.
+ * GIF de-animation.
- * GIF de-animation.
+ * Bypass many click-tracking scripts (avoids script redirection).
- * Bypass many click-tracking scripts (avoids script redirection).
+ * User-customizable HTML templates for most proxy-generated pages (e.g.
+ "blocked" page).
- * User-customizable HTML templates for most proxy-generated pages (e.g.
- "blocked" page).
-
- * Auto-detection and re-reading of config file changes.
-
- * Most features are controllable on a per-site or per-location basis.
+ * 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