openSUSE Security Update: Security update for privoxy ______________________________________________________________________________ Announcement ID: openSUSE-SU-2021:0460-1 Rating: moderate References: #1183129 Cross-References: CVE-2021-20272 CVE-2021-20273 CVE-2021-20274 CVE-2021-20275 CVE-2021-20276 CVSS scores: CVE-2021-20272 (NVD) : 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2021-20273 (NVD) : 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2021-20274 (NVD) : 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2021-20275 (NVD) : 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVE-2021-20276 (NVD) : 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Affected Products: openSUSE Backports SLE-15-SP2 ______________________________________________________________________________ An update that fixes 5 vulnerabilities is now available. Description: This update for privoxy fixes the following issues: Update to version 3.0.32: - Security/Reliability (boo#1183129) - ssplit(): Remove an assertion that could be triggered with a crafted CGI request. Commit 2256d7b4d67. OVE-20210203-0001. CVE-2021-20272 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. CVE-2021-20273 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. CVE-2021-20274 Reported by: Joshua Rogers (Opera) - chunked_body_is_complete(): Prevent an invalid read of size two. Commit a912ba7bc9c. OVE-20210205-0001. CVE-2021-20275 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. CVE-2021-20276 Reported by: Joshua Rogers (Opera) - 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. - 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. - 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/. - 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. This update was imported from the openSUSE:Leap:15.2:Update update project. Patch Instructions: To install this openSUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: - openSUSE Backports SLE-15-SP2: zypper in -t patch openSUSE-2021-460=1 Package List: - openSUSE Backports SLE-15-SP2 (aarch64 ppc64le s390x x86_64): privoxy-3.0.32-bp152.4.9.1 - openSUSE Backports SLE-15-SP2 (noarch): privoxy-doc-3.0.32-bp152.4.9.1 References: https://www.suse.com/security/cve/CVE-2021-20272.html https://www.suse.com/security/cve/CVE-2021-20273.html https://www.suse.com/security/cve/CVE-2021-20274.html https://www.suse.com/security/cve/CVE-2021-20275.html https://www.suse.com/security/cve/CVE-2021-20276.html https://bugzilla.suse.com/1183129