1 Announcing Privoxy 3.0.32 stable
2 --------------------------------------------------------------------
4 Privoxy 3.0.32 fixes multiple DoS issues and a couple of other bugs.
5 The issues also affect earlier Privoxy releases.
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8 ChangeLog for Privoxy 3.0.32
9 --------------------------------------------------------------------
10 - Security/Reliability:
11 - ssplit(): Remove an assertion that could be triggered with a
13 Commit 2256d7b4d67. OVE-20210203-0001.
14 Reported by: Joshua Rogers (Opera)
15 - cgi_send_banner(): Overrule invalid image types. Prevents a
16 crash with a crafted CGI request if Privoxy is toggled off.
17 Commit e711c505c48. OVE-20210206-0001.
18 Reported by: Joshua Rogers (Opera)
19 - socks5_connect(): Don't try to send credentials when none are
20 configured. Fixes a crash due to a NULL-pointer dereference
21 when the socks server misbehaves.
22 Commit 85817cc55b9. OVE-20210207-0001.
23 Reported by: Joshua Rogers (Opera)
24 - chunked_body_is_complete(): Prevent an invalid read of size two.
25 Commit a912ba7bc9c. OVE-20210205-0001.
26 Reported by: Joshua Rogers (Opera)
27 - Obsolete pcre: Prevent invalid memory accesses with an invalid
28 pattern passed to pcre_compile(). Note that the obsolete pcre code
29 is scheduled to be removed before the 3.0.33 release. There has been
30 a warning since 2008 already.
31 Commit 28512e5b624. OVE-20210222-0001.
32 Reported by: Joshua Rogers (Opera)
35 - Properly parse the client-tag-lifetime directive. Previously it was
36 not accepted as an obsolete hash value was being used.
37 Reported by: Joshua Rogers (Opera)
38 - decompress_iob(): Prevent reading of uninitialized data.
39 Reported by: Joshua Rogers (Opera).
40 - decompress_iob(): Don't advance cur past eod when looking
41 for the end of the file name and comment.
42 - decompress_iob(): Cast value to unsigned char before shifting.
43 Prevents a left-shift of a negative value which is undefined behaviour.
44 Reported by: Joshua Rogers (Opera)
45 - gif_deanimate(): Confirm that that we have enough data before doing
46 any work. Fixes a crash when fuzzing with an empty document.
47 Reported by: Joshua Rogers (Opera).
48 - buf_copy(): Fail if there's no data to write or nothing to do.
49 Prevents undefined behaviour "applying zero offset to null pointer".
50 Reported by: Joshua Rogers (Opera)
51 - log_error(): Treat LOG_LEVEL_FATAL as fatal even when --stfu is
52 being used while fuzzing.
53 Reported by: Joshua Rogers (Opera).
54 - Respect DESTDIR when considering whether or not to install
55 config files with ".new" extension.
56 - OpenSSL ssl_store_cert(): Fix two error messages.
57 - Fix a couple of format specifiers.
58 - Silence compiler warnings when compiling with NDEBUG.
59 - fuzz_server_header(): Fix compiler warning.
60 - fuzz_client_header(): Fix compiler warning.
61 - cgi_send_user_manual(): Also reject requests if the user-manual
62 directive specifies a https:// URL. Previously Privoxy would try and
63 fail to open a local file.
65 - General improvements:
66 - Log the TLS version and the the cipher when debug 2 is enabled.
67 - ssl_send_certificate_error(): Respect HEAD requests by not sending a body.
68 - ssl_send_certificate_error(): End the body with a single new line.
69 - serve(): Increase the chances that the host is logged when closing
71 - handle_established_connection(): Add parentheses to clarify an expression
72 Suggested by: David Binderman
73 - continue_https_chat(): Explicitly unset CSP_FLAG_CLIENT_CONNECTION_KEEP_ALIVE
74 if process_encrypted_request() fails. This makes it more obvious that the
75 connection will not be reused. Previously serve() relied on
76 CSP_FLAG_SERVER_CONTENT_LENGTH_SET and CSP_FLAG_CHUNKED being unset.
77 Inspired by a patch from Joshua Rogers (Opera).
78 - decompress_iob(): Add periods to a couple of log messages
79 - Terminate the body of the HTTP snipplets with a single new line
81 - configure: Add --with-assertions option and only enable assertions
83 - windows build: Use --with-brotli and --with-mbedtls by default and
84 enable dynamic error checking.
85 - gif_deanimate(): Confirm we've got an image before trying to write it
86 Saves a pointless buf_copy() call.
87 - OpenSSL ssl_store_cert(): Remove a superfluous space before the serial number.
89 - Action file improvements:
90 - Disable fast-redirects for .golem.de/
91 - Unblock requests to adri*.
92 - Block requests for trc*.taboola.com/
93 - Disable fast-redirects for .linkedin.com/
95 - Filter file improvements:
96 - Make the second pcrs job of the img-reorder filter greedy again.
97 The ungreedy version broke the img tags on:
98 https://bulk.fefe.de/scalability/.
100 - Privoxy-Log-Parser:
101 - Highlight a few more messages.
102 - Clarify the --statistics output. The shown "Reused connections"
103 are server connections so name them appropriately.
104 - Bump version to 0.9.3.
106 - Privoxy-Regression-Test:
107 - Add the --check-bad-ssl option to the --help output.
108 - Bump version to 0.7.3.
111 - Add pushing the created tag to the release steps in the developer manual.
112 - Clarify that 'debug 32768' should be used in addition to the other debug
113 directives when reporting problems.
114 - Add a 'Third-party licenses and copyrights' section to the user manual.
116 -----------------------------------------------------------------
118 -----------------------------------------------------------------
120 Privoxy is a non-caching web proxy with advanced filtering capabilities for
121 enhancing privacy, modifying web page data and HTTP headers, controlling
122 access, and removing ads and other obnoxious Internet junk. Privoxy has a
123 flexible configuration and can be customized to suit individual needs and
124 tastes. It has application for both stand-alone systems and multi-user
127 Privoxy is Free Software and licensed under the GNU GPLv2.
129 Our TODO list is rather long. Helping hands and donations are welcome:
131 * https://www.privoxy.org/participate
133 * https://www.privoxy.org/donate
135 At present, Privoxy is known to run on Windows 95 and later versions
136 (98, ME, 2000, XP, Vista, Windows 7, Windows 10 etc.), GNU/Linux
137 (RedHat, SuSE, Debian, Fedora, Gentoo, Slackware and others),
138 Mac OS X (10.4 and upwards on PPC and Intel processors), Haiku,
139 DragonFly, ElectroBSD, FreeBSD, NetBSD, OpenBSD, Solaris,
140 and various other flavors of Unix.
142 In addition to the core features of ad blocking and cookie management,
143 Privoxy provides many supplemental features, that give the end-user
144 more control, more privacy and more freedom:
146 * Supports "Connection: keep-alive". Outgoing connections can be kept
147 alive independently from the client. Currently not available on all
150 * Supports IPv6, provided the operating system does so too,
151 and the configure script detects it.
153 * Supports tagging which allows to change the behaviour based on client
156 * Supports https inspection which allows to filter https requests.
158 * Can be run as an "intercepting" proxy, which obviates the need to
159 configure browsers individually.
161 * Sophisticated actions and filters for manipulating both server and
164 * Can be chained with other proxies.
166 * Integrated browser based configuration and control utility at
167 http://config.privoxy.org/ (shortcut: http://p.p/). Browser-based
168 tracing of rule and filter effects. Remote toggling.
170 * Web page filtering (text replacements, removes banners based on size,
171 invisible "web-bugs" and HTML annoyances, etc.)
173 * Modularized configuration that allows for standard settings and user
174 settings to reside in separate files, so that installing updated actions
175 files won't overwrite individual user settings.
177 * Support for Perl Compatible Regular Expressions in the configuration
178 files, and a more sophisticated and flexible configuration syntax.
182 * Bypass many click-tracking scripts (avoids script redirection).
184 * User-customizable HTML templates for most proxy-generated pages (e.g.
187 * Auto-detection and re-reading of config file changes.
189 * Most features are controllable on a per-site or per-location basis.
193 https://www.privoxy.org/
195 - Privoxy Developers <privoxy-devel@lists.privoxy.org>