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