SSLproxy/NEWS.md

SSLproxy 0.9.5 2024-02-18

• Fix possible double free of host and serv variables, thanks to @disaykin
• Fix possible integer overflow, thanks to @disaykin
• Close fds only once, thanks to @disaykin
• Fix memory leak, thanks to @disaykin
• Handle ftell error, thanks to @disaykin
• Fix mismatched call arguments, thanks to @disaykin
• Fix memory leak in case of cert key mismatch, thanks to @disaykin
• Fix file descriptor leak, thanks to @disaykin
• Handle partial write, thanks to @disaykin
• Handle return value of gmtime(), thanks to @disaykin
• Fix double free bugs, thanks to @disaykin
  • Bugs found by Svace static analyzer
• Fix possible segfault in proto smtp in split mode
• Fix retval of privsep_server_opensock_verify(), thanks to @Qbog
• Fix header-size calculation in IPv6 packet mirroring, thanks to @matoro
• Fix e2e tests with openssl 3
• Replace deprecated fail_unless() with ck_assert_msg() in unit tests

SSLproxy 0.9.4 2022-12-26

• Fix byte order for ports in mirror trafic, thanks to piolug93.
• Fix unit tests with opaque x509 struct.
• Update testproxy version to 0.0.5.
• Fix warning for array subscript outside array bounds in function declaration.

SSLproxy 0.9.3 2022-05-02

• Implement a generic upgrade mechanism with autossl, without STARTTLS.
• Refactor and improve autossl and split mode.
• Fix watermarking for underlying buffers in autossl.
• Fix macOS header selection, update XNU headers for macOS, and re-enable osx on Travis CI.
• Fix the natengine option passed in proxyspecs on command line.
• Fix enabling of pcap and mirror logging.
• Fix build errors with OpenSSL 3.x.

SSLproxy 0.9.2 2021-11-14

• Update with the license change of the Aho Corasick library to the LGPL.
• Migrate to travis-ci.com.
• Various fixes and improvements.

SSLproxy 0.9.1 2021-11-07

• Add structured filtering rules:

  FilterRule {
      Action (Divert|Split|Pass|Block|Match)
  
      # From
      User (username[*]|$macro|*)  # inline
      Desc (desc[*]|$macro|*)      # comments
      SrcIp (clientip[*]|$macro|*) # allowed
  
      # To
      SNI (servername[*]|$macro|*)
      CN (commonname[*]|$macro|*)
      Host (host[*]|$macro|*)
      URI (uri[*]|$macro|*)
      DstIp (serverip[*]|$macro|*)
      DstPort (serverport[*]|$macro|*)
  
      # Multiple Log lines allowed
      Log ([[!]connect] [[!]master] [[!]cert]
           [[!]content] [[!]pcap] [[!]mirror] [$macro]|[!]*)
  
      ReconnectSSL (yes|no)
  
      # Connection options
      DenyOCSP (yes|no)
      Passthrough (yes|no)
      CACert ca.crt
      CAKey ca.key
      ClientCert client.crt
      ClientKey client.key
      CAChain chain.crt
      LeafCRLURL http://example.com/example.crl
      DHGroupParams dh.pem
      ECDHCurve prime256v1
      SSLCompression (yes|no)
      ForceSSLProto (ssl2|ssl3|tls10|tls11|tls12|tls13)
      DisableSSLProto (ssl2|ssl3|tls10|tls11|tls12|tls13)
      EnableSSLProto (ssl2|ssl3|tls10|tls11|tls12|tls13)
      MinSSLProto (ssl2|ssl3|tls10|tls11|tls12|tls13)
      MaxSSLProto (ssl2|ssl3|tls10|tls11|tls12|tls13)
      Ciphers MEDIUM:HIGH
      CipherSuites TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256:TLS_AES_128_GCM_SHA256
      RemoveHTTPAcceptEncoding (yes|no)
      RemoveHTTPReferer (yes|no)
      VerifyPeer (yes|no)
      AllowWrongHost (yes|no)
      UserAuth (yes|no)
      UserTimeout 300
      UserAuthURL https://192.168.0.1/userdblogin.php
      ValidateProto (yes|no)
      MaxHTTPHeaderSize 8192
  }
  

  Structured filtering rules can be used to specify all possible connection options to be selectively applied to matching connections, not just per-proxyspec or globally. One line filtering rules cannot specify connection options.

• Add -B EnableSSLProto config option.

SSLproxy 0.9.0 2021-10-21

• Add filtering rules:

  (Divert|Split|Pass|Block|Match)
   ([from (
       user (username[*]|$macro|*) [desc (desc[*]|$macro|*)]|
       desc (desc[*]|$macro|*)|
       ip (clientip[*]|$macro|*)|
       *)]
    [to (
       (sni (servername[*]|$macro|*)|
        cn (commonname[*]|$macro|*)|
        host (host[*]|$macro|*)|
        uri (uri[*]|$macro|*)|
        ip (serverip[*]|$macro|*)) [port (serverport[*]|$macro|*)]|
       port (serverport[*]|$macro|*)|
       *)]
    [log ([[!]connect] [[!]master] [[!]cert]
          [[!]content] [[!]pcap] [[!]mirror] [$macro]|[!]*)]
    |*) [# comment]
  

• Add Define config option for defining macros to be used in filtering rules.

• Add Include config option for loading configuration from an include file.

• Add -Q test config option.

• Various fixes and improvements.

  Note: The UTMFW project provides the SSLproxy Rule Editor, SPRE, which can be used to configure proxyspecs, filtering rules, and options, similar to the PF Rule Editor, PFRE, for OpenBSD/pf.

SSLproxy 0.8.4 2021-08-29

• Add split mode of operation similar to SSLsplit. In split mode, packets are not diverted to listening programs, effectively making SSLproxy behave like SSLsplit. Split mode can be defined globally or per-proxyspec.

SSLproxy 0.8.3 2021-02-11

• Improve UserAuth user control lists.
• Improve documentation.

SSLproxy 0.8.2 2020-12-14

• Add DivertUsers and PassUsers options.
• Allow mirroring without explicit target, copied from SSLsplit.
• Various fixes and improvements.

SSLproxy 0.8.1 2020-09-07

• Partial support for TLS 1.3. No support for encrypted SNI yet. TLS 1.3 is enabled by default depending on the version of OpenSSL.
• Add -U CipherSuites option for TLS 1.3.
• Add WITHOUT_USERAUTH switch, which removes the dependency on sqlite too.
• Improve testproxy e2e tests.
• Various fixes and improvements.

SSLproxy 0.8.0 2020-05-24

• Restructure source tree, create src and tests folders, move files and update make files accordingly.
• Automate testproxy e2e tests, add them to travis config except for osx.
• Improve verbose debug logs using common header fields to better identify connections. Create macro functions for fine* debug logs.
• Switch from thrmgr to connection handling thread asap. Cleanly decouple code for thrmgr and conn handling threads. This prevents possible multithreading issues between thrmgr and conn handling threads. So remove thr mutex and BEV_OPT_THREADSAFE. The proxy core runs lockless now.
• Offload thrmgr. Carry almost all conn init tasks from thrmgr to conn handling thread. Remove pending ssl conns list.
• Convert linked lists to doubly linked lists. It is very fast to remove a list node now. And disable all conn ids unless debugging.
• Fix readcb and writecb before connected, do not enable srvdst readcb until connected, enable read and write callbacks only after connected, disable unnecessary callbacks.
• Do not use privsep to open socket for child listener.
• Shut ssl conns down immediately after setting SSL_RECEIVED_SHUTDOWN, instead of trying to close them cleanly using low-level fd events and returned values from repeated calls to SSL_shutdown(), so remove ssl_shutdown_retry_delay and SSLShutdownRetryDelay, not used anymore. This also fixes stalled conn issues with autossl.
• Disable autossl passthrough. Autossl passthrough crashes with signal 10.
• Improve check unit tests and testproxy e2e tests.
• Update with SSLsplit 0.5.5 changes.
• Various fixes and improvements.

SSLsplit 0.5.5 2019-08-30

• Add -A option for specifying a default leaf certificate instead of generating it on the fly (issue #139).
• Rename the following config file options for clarity and consistency:
  • LeafCerts to LeafKey
  • TargetCertDir to LeafCertDir
  • CRL to LeafCRLURL
• Increase the default RSA leaf key size to 2048 bits and force an OpenSSL security level of 0 in order to maximize interoperability in the default configuration. OpenSSL with a security level of 2 or higher was rejecting our old default leaf key size of 1024 bits (issue #248).
• Propagate the exit status of the privsep child process to the parent process and use 128+signal convention (issue #252).
• Fix unexpected connection termination for certificates without a subject common name.
• Fix TCP ports in packet mirroring mode (issue #247).
• Fix certificate loading with LibreSSL 2.9.2 and later.
• Add XNU headers for macOS Mojave 10.14.1 to 10.14.3.
• Minor bugfixes and improvements.

SSLsplit 0.5.4 2018-10-29

This release includes work sponsored by HackerOne.

• Add PCAP content log modes (-X, -Y, -y) and a packet mirroring content log mode (-T, -I) to encapsulate decrypted traffic segments in emulated TCP, IP and Ethernet headers and write the result to PCAP files or send it to a packet capture host on the local network segment (issue #215, based on pull req #149 by @cihankom).
• Suppress Expect-CT header in order to avoid Certificate Transparency log lookup failures (issue #205).
• Add -x option for activating an OpenSSL engine (issue #204, pull req #206).
• Add -f option for loading configuration from file, including a new manual page, sslsplit.conf(5) (pull req #193).
• Bypass privilege separation overhead for when privileges are not actually dropped; this allows the use of -u root to actively prevent privilege separation and remove the associated IPC overhead (issue #222).
• Add sudotest target for optional unit tests which require privileges to run successfully.
• Fix crash when using LibreSSL (pull req #207).
• Add XNU headers for macOS High Sierra 10.13.1 to 10.13.6.
• Release sig PGP/GPG key rollover from 0xB5D3397E to 0xE1520675375F5E35.
• Minor bugfixes and improvements.

SSLsplit 0.5.3 2018-07-20

• Add -a and -b for initial basic client certificate support (pull req #194 by @naf419, issue #46).
• Respect SOURCE_DATE_EPOCH for reproducible builds (pull req #192 by @anthraxx).
• Sign using SHA-256 instead of SHA-1 when key type of server and key type of used CA certificate differ (issue #189).
• Fix keyUsage to match the type of leaf key used instead of copying from upstream certificate (issue #195).
• Fix build with OpenSSL 1.1.1 (pull req #186 by @sonertari, issue #183).
• Fix build on FreeBSD 12 (patch-proc.c r436571 from FreeBSD ports).
• Minor bugfixes and improvements.

SSLsplit 0.5.2 2018-02-10

• Add support for SSLv2 ClientHello handshake format for SSLv3/TLS connections and while there, essentially fixing autossl for clients using SSLv2 ClientHello handshake format with SSLv3/TLS (#185).
• Suppress Upgrade header in order to prevent upgrading connections to WebSockets or HTTP/2 (#91).
• Add -M for writing an SSLKEYLOGFILE compatible log file (issue #184).
• Fix error handling for Darwin libproc functions (-i).
• Fix session cache misses and failed unit tests on MIPS by fixing undefined behaviour in session cache hash functions (Debian #848919 and #851271).
• Synthesize MAC addresses to avoid the requirement for root privileges and waiting for ARP timeouts on some platforms in log2pcap.py (issue #169).
• Minor bugfixes and improvements.

SSLsplit 0.5.1 2018-01-14

• Dump master key in NSS key log format in debug mode, allowing decryption of SSL connections using Wireshark (issue #121).
• Add support for DSA and ECDSA certificates using hash algorithms other than SHA-1.
• Copy basicConstraints, keyUsage and extendedKeyUsage X509v3 extensions from the original certificate and only generate them anew if they were not present (issue #73).
• Add -q to set the CRL distribution point on all forged certificates (pull req #159 by @antalos).
• Add IPv6 support to netfilter NAT engine (pull req #179 by @armakar).
• Extend -L content logging with EOF message to allow log parsers to figure out when a connection ends (issue #128 by @mattes). Note that log parsers need to be adjusted to handle the new EOF message.
• Fix potential segfaults in src.bev/dst.bev (pull req #174 by @sonertari).
• Fix SSL connections that result from autossl to shutdown cleanly.
• Fix data processing when EOF is received before all incoming data has been processed.
• Fix multiple signal handling issues in the privilege separation parent which led to the parent process being killed ungracefully or being stuck in wait() while still having signals queued up for forwarding to the child process (issue #137).
• No longer assume an out of memory condition when a certificate contains neither a CN nor a subjectAltName extension.
• Fix parallel make build (-j) for the test target (issue #140).
• Do not set owner and group if install target is called by unprivileged user (pull req #141 by @cgroschupp).
• Fix build with OpenSSL 1.1.0 and later (pull req #154 by @hillu, #156 by @pduldig-at-tw and issue #148).
• Add XNU headers for Mac OS X El Capitan 10.11.3 to 10.11.6, Sierra 10.12 to 10.12.6 and High Sierra 10.13; fix headers for Mac OS X 10.6 to 10.6.8.
• Minor bugfixes and improvements.

SSLsplit 0.5.0 2016-03-27

• Generically support STARTTLS through the new autossl proxyspec type that upgrades a TCP connection to SSL/TLS when a ClientHello message is seen (based on contribution by @RichardPoole42, pull req #87).
• Add separate src/dst host and port format specifiers %S, %p, %D and %q to -F (pull req #74 by @AdamJacobMuller).
• Add options -w and -W to write generated leaf key, original and forged certificates to disk (issue #67 by @psychomario).
• Add signal SIGUSR1 to re-open long-living -l/-L log files (issue #52).
• Add contributed -L log parsing scripts to extra/, including conversion to PCAP using emulated IP and TCP headers (contributed by @mak, issue #27).
• Enable full-strength DHE and ECDHE by default, even for non-RSA leaf keys, in order to avoid weak cipher warnings from browsers (issue #119).
• Use the same hash algorithm in signatures on forged certificates as the original certificates use, instead of always using SHA-1.
• Removed all references to SHA-1 and small key RSA root CA keys from documentation, examples and unit testing (issue #83).
• Introduce privilege separation architecture with privileged parent process and unprivileged child process; all files are now opened with the privileges of the user running SSLsplit; arguments to -S/-F are no longer relative to the chroot() if used with the -j option.
• Filenames generated by -S and -F %d and %s changed from [host]:port to host,port format and using underscore instead of colon in IPv6 addresses in order to be NTFS clean (issue #69).
• Connect log format: host and port are now separate fields (issues #69 #74).
• Only initialize DNS subsystems when DNS lookups are actually needed by the loaded proxy specifications (related to issue #104).
• Removed the non-standard word "unmodified" from the 2-clause BSD license.
• Warn when an OpenSSL version mismatch is detected (issue #88).
• Add XNU headers for OS X 10.11 El Capitan (issue #116).
• Fix EV_READ event re-enable bug that could lead to stalled connections after throttling one direction (issue #109).
• Fix build with LibreSSL that lacks recent OpenSSL API additions.
• Fix build with OpenSSL versions that had SSLv3 support removed.
• Fix a rare segmentation fault upon receiving EOF on the outbound connection while it has not been established yet (patch by @eunsoopark, issue #124).
• Fix SSL sessions to actually time out (patch by @eunsoopark, issue #115).
• Fix passthrough mode with -t and an empty directory (issue #92).
• Minor bugfixes and improvements.

SSLsplit 0.4.11 2015-03-16

• Fix loading of certificate chains with OpenSSL 1.0.2 (issue #79).
• Fix build on Mac OS X 10.10.2 by improving XNU header selection.

SSLsplit 0.4.10 2014-11-28

• Add option -F to log to separate files with printf-style % directives, including process information for connections originating on the same system when also using -i (pull reqs #36, #53, #54, #55 by @landonf).
• Add option -i to look up local process owning a connection for logging to connection log; initial support on Mac OS X (by @landonf) and FreeBSD.
• Add option -r to force a specific SSL/TLS protocol version (issue #30).
• Add option -R to disable specific SSL/TLS protocol versions (issue #30).
• Disallow -u with pf proxyspecs on Mac OS X because Apple restricts ioctl(/dev/pf) to root even on an fd initially opened by root (issue #65).
• Extend the certificate loading workaround for OpenSSL 1.0.0k and 1.0.1e also to OpenSSL 0.9.8y; fixes cert loading crash due to bug in in OpenSSL.
• Extend Mac OS X pf support to Yosemite 10.10.1.
• Fix startup memory leaks in key/cert loader (pull req #56 by @wjjensen).
• Replace WANT_SSLV2_CLIENT and WANT_SSLV2_SERVER build knobs with a single WITH_SSLV2 build knob.
• Minor bugfixes and improvements.

SSLsplit 0.4.9 2014-11-03

• Filter out HSTS response header to allow users to accept untrusted certs.
• Build without SSLv2 support by default (issue #26).
• Add primary group override (-m) when dropping privileges to an unprivileged user (pull req #35 by @landonf).
• Support pf on Mac OS X 10.10 Yosemite and fix segmentation fault if no NAT engine is available (pull req #32 by @landonf).
• Support DESTDIR and MANDIR in the build (pull req #34 by @swills).
• No longer chroot() to /var/empty by default if run by root, in order to prevent breaking -S and sni proxyspecs (issue #21).
• Load -t certificates before dropping privileges (issues #19 and #20).
• Fix segmentation fault when using -t without a CA.
• Minor bugfixes and improvements.

SSLsplit 0.4.8 2014-01-15

• Filter out Alternate-Protocol response header to suppress SPDY/QUIC.
• Add experimental support for pf on Mac OS X 10.7+ (issue #15).
• Also build ipfw NAT engine if pf is detected to support pf divert-to.
• Unit tests (make test) no longer require Internet connectivity.
• Always use SSL_MODE_RELEASE_BUFFERS when available, which lowers the per connection memory footprint significantly when using OpenSSL 1.0.0+.
• Fix memory corruption after the certificate in the cache had to be updated during connection setup (issue #16).
• Fix file descriptor leak in passthrough mode (-P) after SSL errors.
• Fix OpenSSL data structures memory leak on certificate forgery.
• Fix segmentation fault on connections without SNI hostname, caused by compilers optimizing away a NULL pointer check (issue #14).
• Fix thread manager startup failure under some circumstances (issue #17).
• Fix segmentation faults if thread manager fails to start (issue #10).

SSLsplit 0.4.7 2013-07-02

• Fix remaining threading issues in daemon mode.
• Filter HPKP header lines from HTTP(S) response headers in order to prevent public key pinning based on draft-ietf-websec-key-pinning-06.
• Add HTTP status code and content-length to connection log.

SSLsplit 0.4.6 2013-06-03

• Fix fallback to passthrough (-P) when no matching certificate is found for a connection (issue #9).
• Work around segmentation fault when loading certificates caused by a bug in OpenSSL 1.0.0k and 1.0.1e.
• Fix binding to ports < 1024 with default settings (issue #8).

SSLsplit 0.4.5 2012-11-07

• Add support for 2048 and 4096 bit Diffie-Hellman.
• Fix syslog error messages (issue #6).
• Fix threading issues in daemon mode (issue #5).
• Fix address family check in netfilter NAT lookup (issue #4).
• Fix build on recent glibc systems (issue #2).
• Minor code and build process improvements.

SSLsplit 0.4.4 2012-05-11

• Improve OCSP denial for GET based OCSP requests.
• Default elliptic curve is now 'secp160r2' for better ECDH performance.
• More user-friendly handling of -c, -k and friends.
• Unit test source code renamed from *.t to *.t.c to prevent them from being misdetected as perl instead of c by Github et al.
• Minor bugfixes.

SSLsplit 0.4.3 2012-04-22

• Add generic OCSP denial (-O). OCSP requests transmitted over HTTP or HTTPS are recognized and denied with OCSP tryLater(3) responses.
• Minor bugfixes.

SSLsplit 0.4.2 2012-04-13

First public release.