<!--
- File : $Source: /cvsroot/ijbswa/current/doc/source/changelog.sgml,v $
+ File : doc/source/changelog.sgml
Purpose : Entity included in other project documents.
- $Id: changelog.sgml,v 2.8 2014/11/14 11:31:41 fabiankeil Exp $
-
- Copyright (C) 2013 Privoxy Developers http://www.privoxy.org/
+ Copyright (C) 2013-2021 Privoxy Developers https://www.privoxy.org/
See LICENSE.
======================================================================
user-manual
-->
-<para>
- <application>Privoxy 3.0.22</application> stable is mainly a bug-fix
- release, it also has a couple of new features, though.
- Note that the first two entries in the ChangeLog below refer to security
- issues:
-</para>
<!--
The SGML ChangeLog can be generated with: utils/changelog2doc.pl ChangeLog
-->
+
+<para>
+ <application>Privoxy 3.0.33</application> fixes an XSS issue
+ and multiple DoS issues and a couple of other bugs.
+ The issues also affect earlier Privoxy releases.
+ <application>Privoxy 3.0.33</application> also comes with
+ a couple of general improvements and new features.
+</para>
+<para>
+ Changes in <application>Privoxy 3.0.33</application> stable:
+</para>
<para>
<itemizedlist>
+ <listitem>
+ <para>
+ Security/Reliability:
+ <itemizedlist>
+ <listitem>
+ <para>
+ 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
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ 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.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ 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.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ 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.
+ </para>
+ </listitem>
+ </itemizedlist>
+ </para>
+ </listitem>
<listitem>
<para>
Bug fixes:
<itemizedlist>
<listitem>
<para>
- Fixed a memory leak when rejecting client connections due to
- the socket limit being reached (CID 66382). This affected
- Privoxy 3.0.21 when compiled with IPv6 support (on most
- platforms this is the default).
+ 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.
</para>
</listitem>
<listitem>
<para>
- Fixed an immediate-use-after-free bug (CID 66394) and two
- additional unconfirmed use-after-free complaints made by
- Coverity scan (CID 66391, CID 66376).
+ 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.
</para>
</listitem>
<listitem>
<para>
- Actually show the FORCE_PREFIX value on the show-status page.
+ 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.
</para>
</listitem>
<listitem>
<para>
- Properly deal with Keep-Alive headers with timeout= parameters
- If the timeout still can't be parsed, use the configured
- timeout instead of preventing the client from keeping the
- connection alive. Fixes #3615312/#870 reported by Bernard Guillot.
+ 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.
</para>
</listitem>
<listitem>
<para>
- Not using any filter files no longer results in warning messages
- unless an action file is referencing header taggers or filters.
- Reported by Stefan Kurtz in #3614835.
+ load_config(): Add a space that was missing in a log message.
</para>
</listitem>
<listitem>
<para>
- Fixed a bug that prevented Privoxy from reusing some reusable
- connections. Two bit masks with different purpose unintentionally
- shared the same bit.
+ read_http_request_body(): Fix two error messages that used an
+ incorrect variable.
</para>
</listitem>
<listitem>
<para>
- A couple of additional bugs were discovered by Coverity Scan.
- The fixes that are not expected to affect users are not explicitly
- mentioned here, for details please have a look at the CVS logs.
+ 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.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
- Introduced negative tag patterns NO-REQUEST-TAG and NO-RESPONSE-TAG.
- They apply if no matching tag is found after parsing client or
- server headers.
+ 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.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ 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.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ 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.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ 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@.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ 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.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ 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.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ 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.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ 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.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ handle_established_connection(): Slightly improve a comment.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ handle_established_connection(): Fix a comment.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ socks5_connect(): Fix indentation.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ handle_established_connection(): Improve an error message.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ create_pattern_spec(): Fix ifdef indentation.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ Fix comment typos.
</para>
</listitem>
<listitem>
<para>
- Add support for external filters which allow to process the
- response body with a script or program written in any language
- the platform supports. External filters are enabled with
- +external-filter{} after they have been defined in one of the
- filter files with a header line starting with "EXTERNAL-FILTER:".
- External filter support is experimental, not compiled by default
- and known not to work on all platforms.
+ 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.
</para>
</listitem>
<listitem>
<para>
- Add support for the 'PATCH' method as defined in RFC5789.
+ chat(): Log the applied actions before deciding how to forward the request.
</para>
</listitem>
<listitem>
<para>
- Reject requests with unsupported Expect header values.
- Fixes a couple of Co-Advisor tests.
+ parse_time_header(): Silence a coverity complaint when building without assertions.
</para>
</listitem>
<listitem>
<para>
- Normalize the HTTP-version in forwarded requests and responses.
- This is an explicit RFC 2616 MUST and RFC 7230 mandates that
- intermediaries send their own HTTP-version in forwarded
- messages.
+ receive_encrypted_request_headers(): Improve a log message.
</para>
</listitem>
<listitem>
<para>
- Server 'Keep-Alive' headers are no longer forwarded. From a user's
- point of view it doesn't really matter, but RFC 2616 (obsolete)
- mandates that the header is removed and this fixes a Co-Advisor
- complaint.
+ 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.
</para>
</listitem>
<listitem>
<para>
- Change declared template file encoding to UTF-8. The templates
- already used a subset of UTF-8 anyway and changing the declaration
- allows to properly display UTF-8 characters used in the action files.
- This change may require existing action files with ISO-8859-1
- characters that aren't valid UTF-8 to be converted to UTF-8.
- Requested by Sam Chen in #582.
+ 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.
</para>
</listitem>
<listitem>
<para>
- Do not pass rejected keep-alive timeouts to the server. It might
- not have caused any problems (we know of), but doing the right
- thing shouldn't hurt either.
+ 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
</para>
</listitem>
<listitem>
<para>
- Let log_error() use its own buffer size #define to make changing
- the log buffer size slightly less inconvenient.
+ OpenSSL generate_host_certificate(): Fix two error messsages.
</para>
</listitem>
<listitem>
<para>
- Turned single-threaded into a "proper" toggle directive with arguments.
+ Improve description of handle_established_connection()
</para>
</listitem>
<listitem>
<para>
- CGI templates no longer enforce new windows for some links.
+ OpenSSL ssl_store_cert(): Translate EVP_PKEY_EC to a string.
</para>
</listitem>
<listitem>
<para>
- Remove an undocumented workaround ('HOST' header removal) for
- an Apple iTunes bug that according to #729900 got fixed in 2003.
+ OpenSSL ssl_store_cert(): Remove pointless variable initialization.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ OpenSSL ssl_store_cert(): Initialize pointer with NULL instead of 0.
</para>
</listitem>
</itemizedlist>
<itemizedlist>
<listitem>
<para>
- The pattern 'promotions.' is no longer being blocked.
- Reported by rakista in #3608540.
+ Disable fast-redirects for .microsoftonline.com/.
</para>
</listitem>
<listitem>
<para>
- Disable fast-redirects for .microsofttranslator.com/.
+ Disable fast-redirects for idp.springer.com/.
</para>
</listitem>
<listitem>
<para>
- Disable filter{banners-by-size} for .dgb-tagungszentren.de/.
+ Disable fast-redirects for .zeit.de/zustimmung.
</para>
</listitem>
<listitem>
<para>
- Add adn.speedtest.net as a site-specific unblocker.
- Support request #3612908.
+ Unblock adv-archiv.dfn-cert.de/.
</para>
</listitem>
<listitem>
<para>
- Disable filter{banners-by-size} for creativecommons.org/.
+ Block requests to eu-tlp01.kameleoon.eu/.
</para>
</listitem>
<listitem>
<para>
- Block requests to data.gosquared.com/. Reported by cbug in #3613653.
+ Block requests to fpa-events.arstechnica.com/.
</para>
</listitem>
<listitem>
<para>
- Unblock .conrad./newsletter/. Reported by David Bo in #3614238.
+ Unblock nlnet.nl/.
</para>
</listitem>
<listitem>
<para>
- Unblock .bundestag.de/.
+ Unblock adguard.com/.
+ </para>
+ </listitem>
+ </itemizedlist>
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ Privoxy-Log-Parser:
+ <itemizedlist>
+ <listitem>
+ <para>
+ Highlight 'Socket timeout 3 reached: http://127.0.0.1:20000/no-filter/chunked-content/36'.
</para>
</listitem>
<listitem>
<para>
- Unblock .rote-hilfe.de/.
+ Improve documentation for inactivity-detection mode.
</para>
</listitem>
<listitem>
<para>
- Disable fast-redirects for .facebook.com/plugins/like.php.
+ Detect date changes when looking for inactivity.
</para>
</listitem>
<listitem>
<para>
- Unblock Stackexchange popup URLs that aren't used to serve ads.
- Reported by David Wagner in #3615179.
+ Add a --passed-request-statistics-threshold option
+ that can be set to get statistics for requests that
+ were passed.
</para>
</listitem>
<listitem>
<para>
- Disable fast-redirects for creativecommons.org/.
+ Add a "inactivity detection" mode which can be useful
+ for debugging purposes.
</para>
</listitem>
<listitem>
<para>
- Unblock .stopwatchingus.info/.
+ Bump version to 0.9.4.
</para>
</listitem>
<listitem>
<para>
- Block requests for .adcash.com/script/.
- Reported by Tyrexionibus in #3615289.
+ Only run print_intro() and print_outro() when syntax highlighting.
</para>
</listitem>
<listitem>
<para>
- Disable HTML filters if the response was tagged as JavaScript.
- Filtering JavaScript code with filters intended to deal with HTML
- is usually a waste of time and, more importantly, may break stuff.
+ Rephrase a sentence in the documentation.
</para>
</listitem>
<listitem>
<para>
- Use a custom redirect{} for .washingtonpost.com/wp-apps/imrs\.php\?src=
- Previously enabling the 'Advanced' settings (or manually enabling
- +fast-redirects{}) prevented some images from being loaded properly.
+ Highlight 'Client socket 7 is no longer usable. The server socket has been closed.'.
</para>
</listitem>
<listitem>
<para>
- Unblock "adina*." Fixes #919 reported by Morton A. Goldberg.
+ Clarify --statistics output by explicitly mentioning that
+ the status codes sent by the server may differ from the ones
+ in "debug 512" messages.
</para>
</listitem>
<listitem>
<para>
- Block '/.*DigiAd'.
+ Fix typo in the --statistics output.
</para>
</listitem>
<listitem>
<para>
- Unblock 'adele*.'. Reported by Adele Lime in #1663.
+ Remove an unused variable.
</para>
</listitem>
<listitem>
<para>
- Disable banners-by-size for kggp.de/.
+ Highlight 'The peer notified us that the connection on socket 11 is going to be closed'.
</para>
</listitem>
</itemizedlist>
</listitem>
<listitem>
<para>
- Filter file improvements & bug fixes:
+ Privoxy-Regression-Test:
<itemizedlist>
<listitem>
<para>
- Decrease the chances that js-annoyances creates invalid JavaScript.
- Submitted by John McGowan on ijbswa-users@.
+ Remove duplicated word in a comment.
+ </para>
+ </listitem>
+ </itemizedlist>
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ regression-tests.action:
+ <itemizedlist>
+ <listitem>
+ <para>
+ Add fetch test for http://p.p/wpad.dat.
</para>
</listitem>
<listitem>
<para>
- Let the msn filter hide 'related' ads again.
+ Bump for-privoxy-version to 3.0.33 which introduced the wpad.dat support.
</para>
</listitem>
<listitem>
<para>
- Remove a stray '1' in the 'html-annoyances' filter.
+ Add more tests for the '/send-banner' code.
</para>
</listitem>
<listitem>
<para>
- Prevent img-reorder from messing up img tags with empty src
- attributes. Fixes #880 reported by Duncan.
+ Add test for OVE-20210203-0001.
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ Add a test for CVE-2021-20217.
</para>
</listitem>
</itemizedlist>
</listitem>
<listitem>
<para>
- Documentation improvements:
+ uagen:
<itemizedlist>
<listitem>
<para>
- Updated the 'Would you like to donate?' section.
+ Bump generated Firefox version to 91 (ESR).
</para>
</listitem>
<listitem>
<para>
- Note that invalid forward-override{} parameter syntax isn't
- detected until the parameter is used.
+ Bump version to 1.2.3.
</para>
</listitem>
<listitem>
<para>
- Add another +redirect{} example: a shortcut for illumos bugs.
+ Bump copyright.
</para>
- </listitem>
+ </listitem>
+ </itemizedlist>
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ Build system:
+ <itemizedlist>
<listitem>
<para>
- Make it more obvious that many operating systems support log
- rotation out of the box.
+ configure: Bump SOURCE_DATE_EPOCH.
</para>
</listitem>
<listitem>
<para>
- Fixed dead links. Reported by Mark Nelson in #3614557.
+ GNUmakefile.in: Fix typo.
</para>
</listitem>
<listitem>
<para>
- Rephrased the 'Why is the configuration so complicated?' answer
- to be slightly less condescending. Anonymously suggested in #3615122.
+ 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.
</para>
</listitem>
<listitem>
<para>
- Be more explicit about accept-intercepted-requests's lack of MITM support.
+ Add configure option to enable MemorySanitizer.
</para>
</listitem>
<listitem>
<para>
- Make 'demoronizer' FAQ entries more generic.
+ Add configure option to enable UndefinedBehaviorSanitizer.
</para>
</listitem>
<listitem>
<para>
- Add an example hostname to the --pre-chroot-nslookup description.
+ Add configure option to enable AddressSanitizer.
</para>
</listitem>
<listitem>
<para>
- Add an example for a host pattern that matches an IP address.
+ Bump copyright.
</para>
</listitem>
<listitem>
<para>
- Rename the 'domain pattern' to 'host pattern' as it may
- contain IP addresses as well.
+ 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.
</para>
</listitem>
<listitem>
<para>
- Recommend forward-socks5t when using Tor. It seems to work fine and
- modifying the Tor configuration to profit from it hasn't been necessary
- for a while now.
+ configure: Remove obsolete RPM_BASE check.
</para>
- </listitem>
+ </listitem>
+ </itemizedlist>
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ Windows build system:
+ <itemizedlist>
<listitem>
<para>
- Add another redirect{} example to stress that redirect loops can
- and should be avoided.
+ Update the build script to use mbed tls version 2.6.11.
</para>
</listitem>
<listitem>
<para>
- The usual spelling and grammar fixes. Parts of them were
- reported by Reuben Thomas in #3615276.
+ Update build script to use the final 8.45 pcre library.
</para>
</listitem>
<listitem>
<para>
- Mention the PCRS option letters T and D in the filter section.
+ Put all the '--enable-xxx' options in the configure call together.
+ </para>
+ </listitem>
+ </itemizedlist>
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ macOS build system:
+ <itemizedlist>
+ <listitem>
+ <para>
+ The OSXPackageBuilder repository has been updated and
+ can be used to create macOS packages again.
+ </para>
+ </listitem>
+ </itemizedlist>
+ </para>
+ </listitem>
+ <listitem>
+ <para>
+ Documentation:
+ <itemizedlist>
+ <listitem>
+ <para>
+ contacting: Remove obsolete reference to announce.sgml.
</para>
</listitem>
<listitem>
<para>
- Clarify that handle-as-empty-doc-returns-ok is still useful
- and will not be removed without replacement.
+ contacting: Request that the browser cache is cleared before
+ producing a log file for submission.
</para>
</listitem>
<listitem>
<para>
- Note that security issues shouldn't be reported using the bug tracker.
+ Sponsor FAQ: Note that Privoxy users may follow sponsor links
+ without Referer header set.
</para>
</listitem>
<listitem>
<para>
- Clarify what Privoxy does if both +block{} and +redirect{} apply.
+ newfeatures: Clarify that https inspection also allows to
+ filter https responses.
</para>
</listitem>
<listitem>
<para>
- Removed the obsolete bookmarklets section.
+ developer-manual: Mention that announce.txt should be updated
+ when doing a release.
</para>
- </listitem>
- </itemizedlist>
- </para>
- </listitem>
- <listitem>
- <para>
- Build system improvements:
- <itemizedlist>
+ </listitem>
<listitem>
<para>
- Let --with-group properly deal with secondary groups.
- Patch submitted by Anatoly Arzhnikov in #3615187.
+ config: Explicitly mention that the CGI pages disclosing the
+ ca-password can be blocked and upgrade the disclosure paragraphs
+ to a warning.
</para>
</listitem>
<listitem>
<para>
- Fix web-actions target.
+ 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.
</para>
</listitem>
<listitem>
<para>
- Add a web-faq target that only updates the FAQ on the webserver.
+ Update TODO list item #184 to note that WolfSSL support will
+ (hopefully) appear after the 3.0.34 release.
</para>
</listitem>
<listitem>
<para>
- Remove already-commented-out non-portable DOSFILTER alternatives.
+ 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.
</para>
</listitem>
<listitem>
<para>
- Remove the obsolete targets dok-put and dok-get.
+ Add a warning that the socket-timeout does not apply
+ to operations done by TLS libraries.
</para>
</listitem>
<listitem>
<para>
- Add a sf-shell target.
+ Make documentation slightly less "offensive" for some people
+ by avoiding the word "hell".
</para>
</listitem>
</itemizedlist>
projects / privoxy.git / blobdiff