- Announcing Privoxy 3.0.25 beta
+ Announcing Privoxy 3.0.32 stable
--------------------------------------------------------------------
-Privoxy 3.0.25 beta introduces client-based tags and includes a
-couple of minor improvements. It will be followed by a stable
-release in the near future.
+Privoxy 3.0.32 fixes multiple DoS issues and a couple of other bugs.
+The issues also affect earlier Privoxy releases.
+
--------------------------------------------------------------------
-ChangeLog for Privoxy
+ChangeLog for Privoxy 3.0.32
--------------------------------------------------------------------
+- Security/Reliability:
+ - ssplit(): Remove an assertion that could be triggered with a
+ crafted CGI request.
+ Commit 2256d7b4d67. OVE-20210203-0001.
+ Reported by: Joshua Rogers (Opera)
+ - cgi_send_banner(): Overrule invalid image types. Prevents a
+ crash with a crafted CGI request if Privoxy is toggled off.
+ Commit e711c505c48. OVE-20210206-0001.
+ Reported by: Joshua Rogers (Opera)
+ - socks5_connect(): Don't try to send credentials when none are
+ configured. Fixes a crash due to a NULL-pointer dereference
+ when the socks server misbehaves.
+ Commit 85817cc55b9. OVE-20210207-0001.
+ Reported by: Joshua Rogers (Opera)
+ - chunked_body_is_complete(): Prevent an invalid read of size two.
+ Commit a912ba7bc9c. OVE-20210205-0001.
+ Reported by: Joshua Rogers (Opera)
+ - Obsolete pcre: Prevent invalid memory accesses with an invalid
+ pattern passed to pcre_compile(). Note that the obsolete pcre code
+ is scheduled to be removed before the 3.0.33 release. There has been
+ a warning since 2008 already.
+ Commit 28512e5b624. OVE-20210222-0001.
+ Reported by: Joshua Rogers (Opera)
+
- Bug fixes:
- - Always use the current toggle state for new requests.
- Previously new requests on reused connections inherited
- the toggle state from the previous request even though
- the toggle state could have changed.
- Reported by Robert Klemme.
- - Fixed two buffer-overflows in the (deprecated) static
- pcre code. These bugs are not considered security issues
- as the input is trusted.
- Found with afl-fuzz and ASAN.
+ - Properly parse the client-tag-lifetime directive. Previously it was
+ not accepted as an obsolete hash value was being used.
+ Reported by: Joshua Rogers (Opera)
+ - decompress_iob(): Prevent reading of uninitialized data.
+ Reported by: Joshua Rogers (Opera).
+ - decompress_iob(): Don't advance cur past eod when looking
+ for the end of the file name and comment.
+ - decompress_iob(): Cast value to unsigned char before shifting.
+ Prevents a left-shift of a negative value which is undefined behaviour.
+ Reported by: Joshua Rogers (Opera)
+ - gif_deanimate(): Confirm that that we have enough data before doing
+ any work. Fixes a crash when fuzzing with an empty document.
+ Reported by: Joshua Rogers (Opera).
+ - buf_copy(): Fail if there's no data to write or nothing to do.
+ Prevents undefined behaviour "applying zero offset to null pointer".
+ Reported by: Joshua Rogers (Opera)
+ - log_error(): Treat LOG_LEVEL_FATAL as fatal even when --stfu is
+ being used while fuzzing.
+ Reported by: Joshua Rogers (Opera).
+ - Respect DESTDIR when considering whether or not to install
+ config files with ".new" extension.
+ - OpenSSL ssl_store_cert(): Fix two error messages.
+ - Fix a couple of format specifiers.
+ - Silence compiler warnings when compiling with NDEBUG.
+ - fuzz_server_header(): Fix compiler warning.
+ - fuzz_client_header(): Fix compiler warning.
+ - cgi_send_user_manual(): Also reject requests if the user-manual
+ directive specifies a https:// URL. Previously Privoxy would try and
+ fail to open a local file.
- General improvements:
- - Added support for client-specific tags which allow Privoxy
- admins to pre-define tags that are set for all requests from
- clients that previously opted in through the CGI interface.
- They are useful in multi-user setups where admins may
- want to allow users to disable certain actions and filters
- for themselves without affecting others.
- In single-user setups they are useful to allow more fine-grained
- toggling. For example to disable request blocking while still
- crunching cookies, or to disable experimental filters only.
- This is an experimental feature, the syntax and behaviour may
- change in future versions.
- Sponsored by Robert Klemme.
- - Dynamic filters and taggers now support a $listen-address variable
- which contains the address the request came in on.
- For external filters the variable is called $PRIVOXY_LISTEN_ADDRESS.
- Original patch contributed by pursievro.
- - Add client-header-tagger 'listen-address'.
- - Include the listen-address in the log message when logging new requests.
- Patch contributed by pursievro.
- - Turn invalid max-client-connections values into fatal errors.
- - The show-status page now shows whether or not dates before 1970
- and after 2038 are expected to be handled properly.
- This is mainly useful for Privoxy-Regression-Test but could
- also come handy when dealing with time-related support requests.
- - On Mac OS X the thread id in log messages are more likely to
- be unique now.
- - When complaining about missing filters, the filter type is logged
- as well.
- - A couple of harmless coverity warnings were silenced
- (CID #161202, CID #161203, CID #161211).
+ - Log the TLS version and the the cipher when debug 2 is enabled.
+ - ssl_send_certificate_error(): Respect HEAD requests by not sending a body.
+ - ssl_send_certificate_error(): End the body with a single new line.
+ - serve(): Increase the chances that the host is logged when closing
+ a server socket.
+ - handle_established_connection(): Add parentheses to clarify an expression
+ Suggested by: David Binderman
+ - continue_https_chat(): Explicitly unset CSP_FLAG_CLIENT_CONNECTION_KEEP_ALIVE
+ if process_encrypted_request() fails. This makes it more obvious that the
+ connection will not be reused. Previously serve() relied on
+ CSP_FLAG_SERVER_CONTENT_LENGTH_SET and CSP_FLAG_CHUNKED being unset.
+ Inspired by a patch from Joshua Rogers (Opera).
+ - decompress_iob(): Add periods to a couple of log messages
+ - Terminate the body of the HTTP snipplets with a single new line
+ instead of "\r\n".
+ - configure: Add --with-assertions option and only enable assertions
+ when it is used
+ - windows build: Use --with-brotli and --with-mbedtls by default and
+ enable dynamic error checking.
+ - gif_deanimate(): Confirm we've got an image before trying to write it
+ Saves a pointless buf_copy() call.
+ - OpenSSL ssl_store_cert(): Remove a superfluous space before the serial number.
- Action file improvements:
- - Filtering is disabled for Range requests to let download resumption
- and Windows updates work with the default configuration.
- - Unblock ".ardmediathek.de/".
- Reported by ThTomate in #932.
-
-- Documentation improvements:
- - Add FAQ entry for crashes caused by memory limits.
- - Remove obsolete FAQ entry about a bug in PHP 4.2.3.
- - Mention the new mailing lists were appropriate.
- As the archives have not been migrated, continue to
- mention the archives at SF in the contacting section
- for now.
- - Note that the templates should be adjusted if Privoxy is
- running as intercepting proxy without getting all requests.
- - A bunch of links were converted to https://.
- - Rephrase onion service paragraph to make it more obvious
- that Tor is involved and that the whole website (and not
- just the homepage) is available as onion service.
- - Streamline the "More information" section on the homepage further
- by additionally ditching the link to the 'See also' section
- of the user manual. The section contains mostly links that are
- directly reachable from the homepage already and the rest is
- not significant enough to get a link from the homepage.
- - Change the add-header{} example to set the DNT header
- and use a complete section to make copy and pasting
- more convenient.
- Add a comment to make it obvious that adding the
- header is not recommended for obvious reasons.
- Using the DNT header as example was suggested by
- Leo Wzukw.
- - Streamline the support-and-service template
- Instead of linking to the various support trackers
- (whose URLs hopefully change soon), link to the
- contact section of the user manual to increase the
- chances that users actually read it.
- - Add a FAQ entry for tainted sockets.
- - More sections in the documentation have stable URLs now.
- - FAQ: Explain why 'ping config.privoxy.org' is not expected
- to reach a local Privoxy installation.
- - Note that donations done through Zwiebelfreunde e.V. currently
- can't be checked automatically.
- - Updated section regarding starting Privoxy under OS X.
- - Use dedicated start instructions for FreeBSD and ElectroBSD.
- - Removed release instructions for AIX. They haven't been working
- for years and unsurprisingly nobody seems to care.
- - Removed obsolete reference to the solaris-dist target.
- - Updated the release instructions for FreeBSD.
- - Removed unfinished release instructions for Amiga OS and HP-UX 11.
- - Added a pointer to the Cygwin Time Machine for getting the last release of
- Cygwin version 1.5 to use for building Privoxy on Windows.
- - Various typos have been fixed.
-
-- Infrastructure improvements:
- - The website is no longer hosted at SourceForge and
- can be reached through https now.
- - The mailing lists at SourceForge have been deprecated,
- you can subscribe to the new ones at: https://lists.privoxy.org/
- - Migrating the remaining services from SourceForge is
- work in progress (TODO list item #53).
-
-- Build system improvements:
- - Add configure argument to optimistically redefine FD_SETSIZE
- with the intent to change the maximum number of client
- connections Privoxy can handle. Only works with some libcs.
- Sponsored by Robert Klemme.
- - Let the tarball-dist target skip files in ".git".
- - Let the tarball-dist target work in cwds other than current.
- - Make the 'clean' target faster when run from a git repository.
- - Include tools in the generic distribution.
- - Let the gen-dist target work in cwds other than current.
- - Sort find output that is used for distribution tarballs
- to get reproducible results.
- - Don't add '-src' to the name of the tar ball generated by the
- gen-dist target. The package isn't a source distribution but a
- binary package.
- While at it, use a variable for the name to reduce the chances
- that the various references get out of sync and fix the gen-upload
- target which was looking in the wrong directory.
- - Add regression-tests.action to the files that are distributed.
- - The gen-dist target which was broken since 2002 (r1.92) has been fixed.
- - Remove genclspec.sh which has been obsolete since 2009.
- - Remove obsolete reference to Redhat spec file.
- - Remove the obsolete announce target which has been commented out years ago.
- - Let rsync skip files if the checksums match.
+ - Disable fast-redirects for .golem.de/
+ - Unblock requests to adri*.
+ - Block requests for trc*.taboola.com/
+ - Disable fast-redirects for .linkedin.com/
+
+- Filter file improvements:
+ - Make the second pcrs job of the img-reorder filter greedy again.
+ The ungreedy version broke the img tags on:
+ https://bulk.fefe.de/scalability/.
+
+- Privoxy-Log-Parser:
+ - Highlight a few more messages.
+ - Clarify the --statistics output. The shown "Reused connections"
+ are server connections so name them appropriately.
+ - Bump version to 0.9.3.
- Privoxy-Regression-Test:
- - Add a "Default level offset" directive which can be used to
- change the default level by a given value.
- This directive affects all tests located after it until the end
- of the file or a another "Default level offset" directive is reached.
- The purpose of this directive is to make it more convenient to skip
- similar tests in a given file without having to remove or disable
- the tests completely.
- - Let test level 17 depend on FEATURE_64_BIT_TIME_T
- instead of FEATURE_PTHREAD which has no direct connection
- to the time_t size.
- - Fix indentation in perldoc examples.
- - Don't overlook directives in the first line of the action file.
- - Bump version to 0.7.
- - Fix detection of the Privoxy version now that https://
- is used for the website.
+ - Add the --check-bad-ssl option to the --help output.
+ - Bump version to 0.7.3.
+
+- Documentation:
+ - Add pushing the created tag to the release steps in the developer manual.
+ - Clarify that 'debug 32768' should be used in addition to the other debug
+ directives when reporting problems.
+ - Add a 'Third-party licenses and copyrights' section to the user manual.
-----------------------------------------------------------------
About Privoxy:
Our TODO list is rather long. Helping hands and donations are welcome:
- * https://www.privoxy.org/faq/general.html#PARTICIPATE
+ * https://www.privoxy.org/participate
- * https://www.privoxy.org/faq/general.html#DONATE
+ * https://www.privoxy.org/donate
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.
+(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
* 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.