X-Git-Url: http://www.privoxy.org/gitweb/?a=blobdiff_plain;f=doc%2Fwebserver%2Fannounce.txt;h=c56d0d1172ef9950ecaffe87085f86b4ec55bb79;hb=61a5d3fc15169d9f6b0c21e3a56d893f4d672eb4;hp=374391391e2d0cdf07d9a96642b969193f134dc8;hpb=f5ae5ca030a48e389daa15e156f059d5681041e3;p=privoxy.git
diff --git a/doc/webserver/announce.txt b/doc/webserver/announce.txt
index 37439139..c56d0d11 100644
--- a/doc/webserver/announce.txt
+++ b/doc/webserver/announce.txt
@@ -1,191 +1,228 @@
- Announcing Privoxy v.3.0.16 stable
------------------------------------------------------------------
-
-This is the first stable release since 3.0.12. It mainly contains
-bugfixes for the previous betas which introduced IPv6 support,
-improved keep-alive support and a bunch of minor improvements.
+ Announcing Privoxy 3.0.33 stable
+--------------------------------------------------------------------
-See http://www.privoxy.org/3.0.15/user-manual/whatsnew.html for details.
+Privoxy 3.0.33 fixes an XSS issue, multiple DoS issues and a
+couple of other bugs. The issues also affect earlier Privoxy releases.
+Privoxy 3.0.33 also comes with a couple of general improvements and
+new features.
--------------------------------------------------------------------
-ChangeLog for Privoxy
+ChangeLog for Privoxy 3.0.33
--------------------------------------------------------------------
-*** Version 3.0.16 stable ***
-
-- Added the config file option handle-as-empty-doc-returns-ok to
- work around Firefox bug #492459, which causes Firefox to hang
- if JavaScripts are blocked in certain situations. The option is
- enabled in the default config file.
-- Added the config file option default-server-timeout to control the
- assumed default server timeout. Since Privoxy no longer returns
- an error message for connection resets on reused client connections,
- assuming larger server timeout values appears to actually work
- pretty well as long as connections aren't shared.
-- Added optional support for FreeBSD's accf_http(9). Use the
- configure option --enable-accept-filter to enable it.
-- Added fancier Privoxy icons for win32. Contributed by Jeff H.
-- In daemon mode, fd 0, 1 and 2 are bound to /dev/null.
-- Resolve localhost using whatever address family the operating
- system feels like. Previous betas would try to use IPv4 as this
- is what most users expect, but this didn't work reliably on
- GNU/Linux systems.
-- In the action lists on CGI pages, actions and their parameters are
- no longer separated with a space. The action file parser doesn't
- actually allow this and will throw an invalid syntax error if actions
- and parameters in the action files are separated. Not adding the
- spaces means copy and pasting CGI output into the action files works.
-- The default keep-alive timeout has been reduced to 5 seconds to work
- around hangs in clients that treat the proxy like any other host and
- stop allowing any new connections if the "maximum number of
- connections per host" is reached.
-- Several webbug URLs that look like they are leading to images are now
- blocked as image instead of empty documents. Doing the latter causes
- WebKit-based clients to show a "missing image" icon which may mess up
- the layout.
-- The no-such-domain template is used for DNS resolution
- problems with FEATURE_IPV6_SUPPORT enabled. Previously the
- connect-failed template was used. Reported by 'zebul666'.
-- Accepts quoted expiration dates even though RFC 2109 10.1.2
- doesn't seem to allow them. Reported anonymously.
-- Don't try to forget connections if connection sharing is disabled.
- This wasn't a real problem but caused an unnecessary log message.
-- The still undocumented --enable-extended-host-patterns configure
- option has a better description.
-- Fixed an error message that would claim a write to the server
- failed when actually writing to the client failed.
-- Log the crunch reason before trying to write to the client.
- The log is easier to read that way.
-- Several log messages about client connections also mention
- the socket number.
-- handle-as-empty-document no longer depends on the image blocking
- code being enabled.
-- Privoxy-Log-Parser is roughly 40% faster in highlighting mode.
-- uagen, a Firefox User-Agent generator for Privoxy and Mozilla
- browsers has been imported and is available in the tarball's
- tools directory.
-- The scripts in the tools directory treat unknown parameters
- as fatal errors.
-
-*** Version 3.0.15 beta ***
-
-- In case of missing server data, no error message is send to the
- client if the request arrived on a reused connection. The client
- is then supposed to silently retry the request without bothering
- the user. This should significantly reduce the frequency of the
- "No server or forwarder data received" error message many users
- reported.
-- More reliable detection of prematurely closed client sockets
- with keep-alive enabled.
-- FEATURE_CONNECTION_KEEP_ALIVE is decoupled from
- FEATURE_CONNECTION_SHARING and now available on
- all platforms.
-- Improved handling of POST requests on reused connections.
- Should fix problems with stalled connections after submitting
- form data with some browser configurations.
-- Fixed various latency calculation issues.
-- Allows the client to pass NTLM authentication requests to a
- forwarding proxy. This was already assumed and hinted to work
- in 3.0.13 beta but actually didn't. Now it's confirmed to work
- with IE, Firefox and Chrome.
- Thanks to Francois Botha and Wan-Teh Chang
-- Fixed a calculation problem if receiving the server headers
- takes more than two reads, that could cause Privoxy to terminate
- the connection prematurely. Reported by Oliver.
-- Compiles again on platforms such as OpenBSD and systems
- using earlier glibc version that don't support AI_ADDRCONFIG.
- Anonymously submitted in #2872591.
-- A bunch of MS VC project files and Suse and Redhat RPM spec
- files have been removed as they were no longer maintained for
- quite some time.
-- Overly long action lines are properly rejected with a proper
- error message. Previously they would be either rejected as
- invalid or cause a core dump through abort().
-- Already timed-out connections are no longer temporarily remembered.
- They weren't reused anyway, but wasted a socket slot.
-- len refers to the number of bytes actually read which might
- differ from the ones received. Adjust log messages accordingly.
-- The optional JavaScript on the CGI page uses encodeURIComponent()
- instead of escape() which doesn't encode all characters that matter.
- Anonymously reported in #2832722.
-- Fix gcc45 warnings in decompress_iob().
-- Various log message improvements.
-- Privoxy-Regression-Test supports redirect tests.
-- Privoxy-Log-Parser can gather some connection statistics.
-
-*** Version 3.0.14 beta ***
-
-- The latency is taken into account when evaluating whether or not to
- reuse a connection. This should significantly reduce the number of
- connections problems several users reported.
-- If the server doesn't specify how long the connection stays alive,
- Privoxy errs on the safe side of caution and assumes it's only a second.
-- The error pages for connection timeouts or missing server data use a
- Last-Modified date in the past. Retry attempts are detected and Privoxy
- removes the If-Modified-Since header to prevent the server from responding
- with status code 304 in which case the client would reuse the error message.
-- Setting keep-alive-timeout to 0 disables keep-alive support. Previously
- Privoxy would claim to allow persistence but not reuse the connection.
-- Pipelined requests are less likely to be mistaken for the request
- body of the previous request. Note that Privoxy still has no real
- pipeline support and will either serialize pipelined requests or
- drop them in which case the client has to resent them.
-- Fixed a crash on some Windows versions when header randomization
- is enabled and the date couldn't be parsed.
-- Privoxy's keep-alive timeout for the current connection is reduced
- to the one specified in the client's Keep-Alive header.
-- For HTTP/1.1 requests, Privoxy implies keep-alive support by not
- setting any Connection header instead of using 'Connection: keep-alive'.
-- If the socket isn't reusable, Privoxy doesn't temporarily waste
- a socket slot to remember the connection.
-- If keep-alive support is disabled but compiled in, the client's
- Keep-Alive header is removed.
-- Fixed a bug on mingw32 where downloading large files failed if
- keep-alive support was enabled.
-- Fixed a bug that (at least theoretically) could cause log
- timestamps to be occasionally off by about a second.
-- No Proxy-Connection header if added if there already is one.
-- The configure script respects the $PATH variable when searching
- for groups and id.
-
-*** Version 3.0.13 beta ***
-
-- Added IPv6 support. Thanks to Petr Pisar who not only provided
- the initial patch but also helped a lot with the integration.
-- Added client-side keep-alive support.
-- The connection sharing code is only used if the connection-sharing
- option is enabled.
-- The max-client-connections option has been added to restrict
- the number of client connections below a value enforced by
- the operating system.
-- Fixed a regression reintroduced in 3.0.12 that could cause
- crashes on mingw32 if header date randomization was enabled.
-- Compressed content with extra fields couldn't be decompressed
- and would get passed to the client unfiltered. This problem
- has only be detected through statical analysis with clang as
- nobody seems to be using extra fields anyway.
-- If the server resets the Connection after sending only the headers
- Privoxy forwards what it got to the client. Previously Privoxy
- would deliver an error message instead.
-- Error messages in case of connection timeouts use the right
- HTTP status code.
-- If spawning a child to handle a request fails, the client
- gets an error message and Privoxy continues to listen for
- new requests right away.
-- The error messages in case of server-connection timeouts or
- prematurely closed server connections are now template-based.
-- If zlib support isn't compiled in, Privoxy no longer tries to
- filter compressed content unless explicitly asked to do so.
-- In case of connections that are denied based on ACL directives,
- the memory used for the client IP is no longer leaked.
-- Fixed another small memory leak if the client request times out
- while waiting for client headers other than the request line.
-- The client socket is kept open until the server socket has
- been marked as unused. This should increase the chances that
- the still-open connection will be reused for the client's next
- request to the same destination. Note that this only matters
- if connection-sharing is enabled.
-- A TODO list has been added to the source tarball to give potential
- volunteers a better idea of what the current goals are.
+- Security/Reliability:
+ - cgi_error_no_template(): Encode the template name to prevent
+ XSS (cross-site scripting) when Privoxy is configured to servce
+ the user-manual itself.
+ Commit 0e668e9409c. OVE-20211102-0001. CVE-2021-44543.
+ Reported by: Artem Ivanov
+ - get_url_spec_param(): Free memory of compiled pattern spec
+ before bailing.
+ Reported by Joshua Rogers (Opera) who also provided the fix.
+ Commit 652b4b7cb0. OVE-20211201-0003. CVE-2021-44540.
+ - process_encrypted_request_headers(): Free header memory when
+ failing to get the request destination.
+ Reported by Joshua Rogers (Opera) who also provided the fix.
+ Commit 0509c58045. OVE-20211201-0002. CVE-2021-44541.
+ - send_http_request(): Prevent memory leaks when handling errors
+ Reported by Joshua Rogers (Opera) who also provided the fix.
+ Commit c48d1d6d08. OVE-20211201-0001. CVE-2021-44542.
+
+- Bug fixes:
+ - handle_established_connection(): Skip the poll()/select() calls
+ if TLS data is pending on the server socket. The TLS library may
+ have already consumed all the data from the server response in
+ which case poll() and select() will not detect that data is
+ available to be read.
+ Fixes SF bug #926 reported by Wen Yue.
+ - continue_https_chat(): Update csp->server_connection.request_sent
+ after sending the request to make sure the latency is calculated
+ correctly. Previously https connections were not reused after
+ timeout seconds after the first request made on the connection.
+ - free_pattern_spec(): Don't try to free an invalid pointer
+ when unloading an action file with a TAG pattern while
+ Privoxy has been compiled without FEATURE_PCRE_HOST_PATTERNS.
+ Closes: SF patch request #147. Patch by Maxim Antonov.
+ - Adjust build_request_line() to create a CONNECT request line when
+ https-inspecting and forwarding to a HTTP proxy.
+ Fixes SF bug #925 reported by Wen Yue.
+ - load_config(): Add a space that was missing in a log message.
+ - read_http_request_body(): Fix two error messages that used an
+ incorrect variable.
+ - If the the response is chunk-encoded, ignore the Content-Length
+ header sent by the server.
+ Allows to load https://redmine.lighttpd.net/ with filtering enabled.
+
+- General improvements:
+ - Allow to edit the add-header action through the CGI editor by
+ generalizing the code that got added with the suppress-tag action.
+ Closes SF patch request #146. Patch by Maxim Antonov.
+ - Add a CGI handler for /wpad.dat that returns a
+ Proxy Auto-Configuration (PAC) file.
+ Among other things, it can be used to instruct clients
+ through DHCP to use Privoxy as proxy.
+ For example with the dnsmasq option:
+ dhcp-option=252,http://config.privoxy.org/wpad.dat
+ Initial patch by Richard Schneidt.
+ - Don't log the applied actions in process_encrypted_request()
+ Log them in continue_https_chat() instead to mirror chat().
+ Prevents the applied actions from getting logged twice
+ for the first request on an https-inspected connection.
+ - OpenSSL generate_host_certificate(): Use config.privoxy.org as Common Name
+ Org and Org Unit if the real host name is too long to get accepted by OpenSSL.
+ Clients should only care about the Subject Alternative Name
+ anyway and we can continue to use the real host name for it.
+ Reported by Miles Wen on privoxy-users@.
+ - Establish the TLS connection with the client earlier and decide
+ how to route the request afterwards. This allows to change the
+ forwarding settings based on information from the https-inspected
+ request, for example the path.
+ - listen_loop(): When shutting down gracefully, close listening ports
+ before waiting for the threads to exit. Allows to start a second
+ Privoxy with the same config file while the first Privoxy is still
+ running.
+ - serve(): Close the client socket as well if the server socket
+ for an inspected connection has been closed. Privoxy currently
+ can't establish a new server connection when the client socket
+ is reused and would drop the connection in continue_https_chat()
+ anyway.
+ - Don't disable redirect checkers in redirect_url().
+ Disable them in handle_established_connection() instead.
+ Doing it in redirect_url() prevented the +redirect{} and
+ +fast-redirects{} actions from being logged with LOG_LEVEL_ACTIONS.
+ - handle_established_connection(): Slightly improve a comment.
+ - handle_established_connection(): Fix a comment.
+ - socks5_connect(): Fix indentation.
+ - handle_established_connection(): Improve an error message.
+ - create_pattern_spec(): Fix ifdef indentation.
+ - Fix comment typos.
+ - process_encrypted_request(): Improve a log message.
+ The function only processes request headers and there
+ may still be unread request body data left to process.
+ - chat(): Log the applied actions before deciding how to forward the request.
+ - parse_time_header(): Silence a coverity complaint when building without assertions.
+ - receive_encrypted_request_headers(): Improve a log message.
+ - mbedTLS get_ciphersuites_from_string(): Use strlcpy() instead of strncpy().
+ Previously the terminating NUL wasn't copied which resulted
+ in a compiler warning. This didn't cause actual problems as
+ the target buffer was initialized by zalloc_or_die() so the
+ last byte of the target buffer was NUL already.
+ Actually copying the terminating NUL seems clearer, though.
+ - Remove compiler warnings. "log_error(LOG_LEVEL_FATAL, ..."
+ doesn't return but apparently the compiler doesn't know that.
+ Get rid of several "this statement may fall through
+ [-Wimplicit-fallthrough=]" warnings.
+ - Store the PEM certificate in a dynamically allocated buffer
+ when https-inspecting. Should prevent errors like:
+ 2021-03-16 22:36:19.148 7f47bbfff700 Error: X509 PEM cert len 16694 is larger than buffer len 16383
+ As a bonus it should slightly reduce the memory usage as most
+ certificates are smaller than the previously used fixed buffer.
+ Reported by: Wen Yue
+ - OpenSSL generate_host_certificate(): Fix two error messsages.
+ - Improve description of handle_established_connection()
+ - OpenSSL ssl_store_cert(): Translate EVP_PKEY_EC to a string.
+ - OpenSSL ssl_store_cert(): Remove pointless variable initialization.
+ - OpenSSL ssl_store_cert(): Initialize pointer with NULL instead of 0.
+
+- Action file improvements:
+ - Disable fast-redirects for .microsoftonline.com/.
+ - Disable fast-redirects for idp.springer.com/.
+ - Disable fast-redirects for .zeit.de/zustimmung.
+ - Unblock adv-archiv.dfn-cert.de/.
+ - Block requests to eu-tlp01.kameleoon.eu/.
+ - Block requests to fpa-events.arstechnica.com/.
+ - Unblock nlnet.nl/.
+ - Unblock adguard.com/.
+
+- Privoxy-Log-Parser:
+ - Highlight 'Socket timeout 3 reached: http://127.0.0.1:20000/no-filter/chunked-content/36'.
+ - Improve documentation for inactivity-detection mode.
+ - Detect date changes when looking for inactivity.
+ - Add a --passed-request-statistics-threshold option
+ that can be set to get statistics for requests that
+ were passed.
+ - Add a "inactivity detection" mode which can be useful
+ for debugging purposes.
+ - Bump version to 0.9.4.
+ - Only run print_intro() and print_outro() when syntax highlighting.
+ - Rephrase a sentence in the documentation.
+ - Highlight 'Client socket 7 is no longer usable. The server socket has been closed.'.
+ - Clarify --statistics output by explicitly mentioning that
+ the status codes sent by the server may differ from the ones
+ in "debug 512" messages.
+ - Fix typo in the --statistics output.
+ - Remove an unused variable.
+ - Highlight 'The peer notified us that the connection on socket 11 is going to be closed'.
+
+- Privoxy-Regression-Test:
+ - Remove duplicated word in a comment.
+
+- regression-tests.action:
+ - Add fetch test for http://p.p/wpad.dat.
+ - Bump for-privoxy-version to 3.0.33 which introduced the wpad.dat support.
+ - Add more tests for the '/send-banner' code.
+ - Add test for OVE-20210203-0001.
+ - Add a test for CVE-2021-20217.
+
+- uagen:
+ - Bump generated Firefox version to 91 (ESR).
+ - Bump version to 1.2.3.
+ - Bump copyright.
+
+- Build system:
+ - configure: Bump SOURCE_DATE_EPOCH.
+ - GNUmakefile.in: Fix typo.
+ - configure: Add another warning in case --disable-pthread
+ is used while POSIX threads are available.
+ Various features don't even compile when not using threads.
+ - Add configure option to enable MemorySanitizer.
+ - Add configure option to enable UndefinedBehaviorSanitizer.
+ - Add configure option to enable AddressSanitizer.
+ - Bump copyright.
+ - Add a configure option to disable pcre JIT compilation.
+ While JIT compilation makes filtering faster it can
+ cause false-positive valgrind complaints.
+ As reported by Gwyn Ciesla in SF bug 924 it also can
+ cause problems when the SELinux policy does not grant
+ Privoxy "execmem" privileges.
+ - configure: Remove obsolete RPM_BASE check.
+
+- Windows build system:
+ - Update the build script to use mbed tls version 2.6.11.
+ - Update build script to use the final 8.45 pcre library.
+ - Put all the '--enable-xxx' options in the configure call together.
+
+- macOS build system:
+ - The OSXPackageBuilder repository has been updated and
+ can be used to create macOS packages again.
+
+- Documentation:
+ - contacting: Remove obsolete reference to announce.sgml.
+ - contacting: Request that the browser cache is cleared before
+ producing a log file for submission.
+ - Sponsor FAQ: Note that Privoxy users may follow sponsor links
+ without Referer header set.
+ - newfeatures: Clarify that https inspection also allows to
+ filter https responses.
+ - developer-manual: Mention that announce.txt should be updated
+ when doing a release.
+ - config: Explicitly mention that the CGI pages disclosing the
+ ca-password can be blocked and upgrade the disclosure paragraphs
+ to a warning.
+ - Put all the requested debug options in the config file.
+ Section 11.1 of the Privoxy user manual lists all the debug
+ options that should be enabled when reporting problems or requesting support.
+ Make it easier for users to do the right thing by having all those
+ options present in the config.
+ - Update TODO list item #184 to note that WolfSSL support will
+ (hopefully) appear after the 3.0.34 release.
+ - Update max-client-connections's description.
+ On modern systems other than Windows Privoxy should
+ use poll() in which case the FD_SETSIZE value isn't
+ releveant.
+ - Add a warning that the socket-timeout does not apply
+ to operations done by TLS libraries.
+ - Make documentation slightly less "offensive" for some people
+ by avoiding the word "hell".
-----------------------------------------------------------------
About Privoxy:
@@ -200,73 +237,70 @@ networks.
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
+ * https://www.privoxy.org/participate
- * http://www.privoxy.org/faq/general.html#DONATE
+ * https://www.privoxy.org/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, Windows 10 etc.), GNU/Linux
+(RedHat, SuSE, Debian, Fedora, Gentoo, Slackware and others),
+Mac OS X (10.4 and upwards on PPC and Intel processors), 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.
+ * Supports https inspection which allows to filter https requests.
- * 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 "web-bugs" 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/
+Home Page:
+ https://www.privoxy.org/
- - Privoxy Developers
+ - Privoxy Developers