- Announcing Privoxy 3.0.32 stable
+ Announcing Privoxy 3.0.33 stable
--------------------------------------------------------------------
-Privoxy 3.0.32 fixes multiple DoS issues and a couple of other bugs.
-The issues also affect earlier Privoxy releases.
+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 3.0.32
+ChangeLog for Privoxy 3.0.33
--------------------------------------------------------------------
- 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)
+ - cgi_error_no_template(): Encode the template name to prevent
+ XSS (cross-side 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:
- - 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.
+ - 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:
- - 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.
+ - 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 .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/.
+ - 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 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.
+ - 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:
- - Add the --check-bad-ssl option to the --help output.
- - Bump version to 0.7.3.
+ - 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:
- - 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.
+ - 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".
-----------------------------------------------------------------
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