- Announcing Privoxy 3.0.24 stable
+ Announcing Privoxy 3.0.32 stable
--------------------------------------------------------------------
-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
-(CVE requests pending) and may be used to remotely trigger crashes
-on platforms that carefully check memory accesses (most don't).
+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 fixes (denial of service):
- - Prevent invalid reads in case of corrupt chunk-encoded content.
- Bug discovered with afl-fuzz and AddressSanitizer.
- - Remove empty Host headers in client requests.
- Previously they would result in invalid reads.
- Bug discovered with afl-fuzz and AddressSanitizer.
+- 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 since 2008 already.
+ Commit 28512e5b624. OVE-20210222-0001.
+ Reported by: Joshua Rogers (Opera)
- 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.
+ - 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:
- - 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.
+ - 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:
- - 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:
- - 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/).
+ - 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 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:
- * 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 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.
Home Page:
- http://www.privoxy.org/
+ https://www.privoxy.org/
- - Privoxy Developers <ijbswa-developers@lists.sourceforge.net>
+ - Privoxy Developers <privoxy-devel@lists.privoxy.org>
projects / privoxy.git / blobdiff