@@ -175,7 +175,7 @@ distclean-recursive distdir maintainer-clean-recursive: c++/Makefile

 endif

 # libmspack version:

-LIBMSPACK_VERSION = 0:5:0

+LIBMSPACK_VERSION = 0:7:1

 libclammspack_la_CFLAGS = -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -I@top_srcdir@/libclammspack/mspack

 libclammspack_la_LDFLAGS = -version-info $(LIBMSPACK_VERSION) -no-undefined -export-symbols-regex '^mspack_'

@@ -10,3 +10,4 @@ Contributors:

 - LZX decompressor fixes by Jae Jung and Igor Glucksmann

 - Debianisation by Markus Sinner

 - Quantum decompressor fix by Larry Frieson

+- OAB decompressor by David Woodhouse

new file mode 100644

@@ -0,0 +1,504 @@

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@@ -1,3 +1,100 @@

+2018-08-09  Stuart Caie <kyzer@cabextract.org.uk>

+

+	* Makefile.am: the test file cve-2015-4467-reset-interval-zero.chm is

+	detected by ClamAV as BC.Legacy.Exploit.CVE_2012_1458-1 "infected".

+	My hosting deletes anything that ClamAV calls "infected", so has been

+	continually deleting the official libmspack 0.7alpha release.

+	

+	CVE-2012-1458 is the same issue as CVE-2015-4467: both libmspack, and

+	ClamAV using libmspack, could get a division-by-zero crash when the LZX

+	reset interval was zero. This was fixed years ago, but ClamAV still has 

+	it as a signature, which today prevents me from releasing libmspack.

+	

+	BC.Legacy.Exploit.CVE_2012_1458-1 is a bytecode signature, so I can't

+	see the exact trigger conditions, but I can see that it looks for the

+	"LZXC" signature of the LZX control file, so I've changed this to

+	"lzxc" and added a step in the Makefile to change it back to LZXC, so

+	I can release libmspack whether or not ClamAV keeps the signature.

+

+2018-04-26  Stuart Caie <kyzer@cabextract.org.uk>

+

+	* read_chunk(): the test that chunk numbers are in bounds was off

+	by one, so read_chunk() returned a pointer taken from outside

+	allocated memory that usually crashes libmspack when accessed.

+	Thanks to Hanno Böck for finding the issue and providing a sample.

+

+	* chmd_read_headers(): reject files with blank filenames. Thanks

+	again to Hanno Böck for finding the issue and providing a sample file.

+

+2018-02-06  Stuart Caie <kyzer@cabextract.org.uk>

+

+	* chmd.c: fixed an off-by-one error in the TOLOWER() macro, reported

+	by Dmitry Glavatskikh. Thanks Dmitry!

+

+2017-11-26  Stuart Caie <kyzer@cabextract.org.uk>

+

+	* kwajd_read_headers(): fix up the logic of reading the filename and

+	extension headers to avoid a one or two byte overwrite. Thanks to

+	Jakub Wilk for finding the issue.

+

+	* test/kwajd_test.c: add tests for KWAJ filename.ext handling

+

+2017-10-16  Stuart Caie <kyzer@cabextract.org.uk>

+

+	* test/cabd_test.c: update the short string tests to expect not only

+	MSPACK_ERR_DATAFORMAT but also MSPACK_ERR_READ, because of the recent

+	change to cabd_read_string(). Thanks to maitreyee43 for spotting this.

+

+	* test/msdecompile_md5: update the setup instructions for this script,

+	and also change the script so it works with current Wine. Again, thanks

+	to maitreyee43 for trying to use it and finding it not working.

+

+2017-08-13  Stuart Caie <kyzer@cabextract.org.uk>

+

+	* src/chmextract.c: support MinGW one-arg mkdir(). Thanks to AntumDeluge

+	for reporting this.

+

+2017-08-13  Stuart Caie <kyzer@cabextract.org.uk>

+

+	* read_spaninfo(): a CHM file can have no ResetTable and have a

+	negative length in SpanInfo, which then feeds a negative output length

+	to lzxd_init(), which then sets frame_size to a value of your choosing,

+	the lower 32 bits of output length, larger than LZX_FRAME_SIZE. If the

+	first LZX block is uncompressed, this writes data beyond the end of the

+	window. This issue was raised by ClamAV as CVE-2017-6419.  Thanks to

+	Sebastian Andrzej Siewior for finding this by chance!

+

+	* lzxd_init(), lzxd_set_output_length(), mszipd_init(): due to the issue

+	mentioned above, these functions now reject negative lengths

+

+2017-08-05  Stuart Caie <kyzer@cabextract.org.uk>

+

+	* cabd_read_string(): add missing error check on result of read().

+	If an mspack_system implementation returns an error, it's interpreted

+	as a huge positive integer, which leads to reading past the end of the

+	stack-based buffer. Thanks to Sebastian Andrzej Siewior for explaining

+	the problem. This issue was raised by ClamAV as CVE-2017-11423

+

+2016-04-20  Stuart Caie <kyzer@cabextract.org.uk>

+

+	* configure.ac: change my email address to kyzer@cabextract.org.uk

+

+2015-05-10  Stuart Caie <kyzer@4u.net>

+

+	* cabd_read_string(): correct rejection of empty strings. Thanks to

+	Hanno Böck for finding the issue and providing a sample file.

+

+2015-05-10  Stuart Caie <kyzer@4u.net>

+

+	* Makefile.am: Add subdir-objects option as suggested by autoreconf.

+

+	* configure.ac: Add AM_PROG_AR as suggested by autoreconf.

+

+2015-01-29  Stuart Caie <kyzer@4u.net>

+

+	* system.h: if C99 inttypes.h exists, use its PRI{d,u}{32,64} macros.

+	Thanks to Johnathan Kollasch for the suggestion.

+

 2015-01-18  Stuart Caie <kyzer@4u.net>

 	* lzxd_decompress(): the byte-alignment code for reading uncompressed

@@ -37,7 +134,7 @@

 	null and thus segfault. Thanks to Jakub Wilk again.

 	* cabd_read_string: reject empty strings. They are not found in any

+	valid CAB files. Thanks to Hanno Böck for sending me an example.

 2015-01-05  Stuart Caie <kyzer@4u.net>

@@ -92,9 +189,9 @@

 2011-11-23  Stuart Caie <kyzer@4u.net>

-	* chmd_fast_find(): add a simple check against infinite PGML

+	* chmd_fast_find(): add a simple check against infinite PMGL

 	loops. Thanks to Sergei Trofimovich for finding sample files.

-	Multi-step PGML or PGMI infinite loops remain possible.

+	Multi-step PMGL/PMGI infinite loops remain possible.

 2011-06-17  Stuart Caie <kyzer@4u.net>

@@ -213,7 +310,7 @@

 2011-04-26:  Stuart Caie <kyzer@4u.net>

 	* test/chminfo.c: more sanity checks for corrupted CHM files where

-	entries go past the end of a PGML/PGMI chunk, thanks to

+	entries go past the end of a PMGL/PMGI chunk, thanks to

 	Sergei Trofimovich for sending me examples and analysis.

 2011-04-25:  Stuart Caie <kyzer@4u.net>

@@ -459,7 +556,7 @@

 2005-03-22:  Stuart Caie   <kyzer@4u.net>

 	* system.h: now undefs "read", as the latest glibc defines read()

+	as a macro which messes everything up. Thanks to Ville Skyttä for

 	the update.

 2005-03-14:  Stuart Caie   <kyzer@4u.net>

@@ -1,8 +1,8 @@

 Installation Instructions

 *************************

-Copyright (C) 1994-1996, 1999-2002, 2004-2013 Free Software Foundation,

-Inc.

+   Copyright (C) 1994-1996, 1999-2002, 2004-2016 Free Software

+Foundation, Inc.

    Copying and distribution of this file, with or without modification,

 are permitted in any medium without royalty provided the copyright

@@ -12,97 +12,96 @@ without warranty of any kind.

 Basic Installation

 ==================

-   Briefly, the shell command `./configure && make && make install'

+   Briefly, the shell command './configure && make && make install'

 should configure, build, and install this package.  The following

-more-detailed instructions are generic; see the `README' file for

+more-detailed instructions are generic; see the 'README' file for

 instructions specific to this package.  Some packages provide this

-`INSTALL' file but do not implement all of the features documented

+'INSTALL' file but do not implement all of the features documented

 below.  The lack of an optional feature in a given package is not

 necessarily a bug.  More recommendations for GNU packages can be found

 in *note Makefile Conventions: (standards)Makefile Conventions.

-   The `configure' shell script attempts to guess correct values for

+   The 'configure' shell script attempts to guess correct values for

 various system-dependent variables used during compilation.  It uses

-those values to create a `Makefile' in each directory of the package.

-It may also create one or more `.h' files containing system-dependent

-definitions.  Finally, it creates a shell script `config.status' that

+those values to create a 'Makefile' in each directory of the package.

+It may also create one or more '.h' files containing system-dependent

+definitions.  Finally, it creates a shell script 'config.status' that

 you can run in the future to recreate the current configuration, and a

-file `config.log' containing compiler output (useful mainly for

-debugging `configure').

+file 'config.log' containing compiler output (useful mainly for

+debugging 'configure').

-   It can also use an optional file (typically called `config.cache'

-and enabled with `--cache-file=config.cache' or simply `-C') that saves

-the results of its tests to speed up reconfiguring.  Caching is

-disabled by default to prevent problems with accidental use of stale

-cache files.

+   It can also use an optional file (typically called 'config.cache' and

+enabled with '--cache-file=config.cache' or simply '-C') that saves the

+results of its tests to speed up reconfiguring.  Caching is disabled by

+default to prevent problems with accidental use of stale cache files.

    If you need to do unusual things to compile the package, please try

-to figure out how `configure' could check whether to do them, and mail

-diffs or instructions to the address given in the `README' so they can

+to figure out how 'configure' could check whether to do them, and mail

+diffs or instructions to the address given in the 'README' so they can

 be considered for the next release.  If you are using the cache, and at

-some point `config.cache' contains results you don't want to keep, you

+some point 'config.cache' contains results you don't want to keep, you

 may remove or edit it.

-   The file `configure.ac' (or `configure.in') is used to create

-`configure' by a program called `autoconf'.  You need `configure.ac' if

-you want to change it or regenerate `configure' using a newer version

-of `autoconf'.

+   The file 'configure.ac' (or 'configure.in') is used to create

+'configure' by a program called 'autoconf'.  You need 'configure.ac' if

+you want to change it or regenerate 'configure' using a newer version of

+'autoconf'.

    The simplest way to compile this package is:

-  1. `cd' to the directory containing the package's source code and type

-     `./configure' to configure the package for your system.

+  1. 'cd' to the directory containing the package's source code and type

+     './configure' to configure the package for your system.

-     Running `configure' might take a while.  While running, it prints

+     Running 'configure' might take a while.  While running, it prints

      some messages telling which features it is checking for.

-  2. Type `make' to compile the package.

+  2. Type 'make' to compile the package.

-  3. Optionally, type `make check' to run any self-tests that come with

+  3. Optionally, type 'make check' to run any self-tests that come with

      the package, generally using the just-built uninstalled binaries.

-  4. Type `make install' to install the programs and any data files and

+  4. Type 'make install' to install the programs and any data files and

      documentation.  When installing into a prefix owned by root, it is

      recommended that the package be configured and built as a regular

-     user, and only the `make install' phase executed with root

+     user, and only the 'make install' phase executed with root

      privileges.

-  5. Optionally, type `make installcheck' to repeat any self-tests, but

+  5. Optionally, type 'make installcheck' to repeat any self-tests, but

      this time using the binaries in their final installed location.

      This target does not install anything.  Running this target as a

-     regular user, particularly if the prior `make install' required

+     regular user, particularly if the prior 'make install' required

      root privileges, verifies that the installation completed

      correctly.

   6. You can remove the program binaries and object files from the

-     source code directory by typing `make clean'.  To also remove the

-     files that `configure' created (so you can compile the package for

-     a different kind of computer), type `make distclean'.  There is

-     also a `make maintainer-clean' target, but that is intended mainly

+     source code directory by typing 'make clean'.  To also remove the

+     files that 'configure' created (so you can compile the package for

+     a different kind of computer), type 'make distclean'.  There is

+     also a 'make maintainer-clean' target, but that is intended mainly

      for the package's developers.  If you use it, you may have to get

      all sorts of other programs in order to regenerate files that came

      with the distribution.

-  7. Often, you can also type `make uninstall' to remove the installed

+  7. Often, you can also type 'make uninstall' to remove the installed

      files again.  In practice, not all packages have tested that

      uninstallation works correctly, even though it is required by the

      GNU Coding Standards.

-  8. Some packages, particularly those that use Automake, provide `make

+  8. Some packages, particularly those that use Automake, provide 'make

      distcheck', which can by used by developers to test that all other

-     targets like `make install' and `make uninstall' work correctly.

+     targets like 'make install' and 'make uninstall' work correctly.

      This target is generally not run by end users.

 Compilers and Options

 =====================

    Some systems require unusual options for compilation or linking that

-the `configure' script does not know about.  Run `./configure --help'

+the 'configure' script does not know about.  Run './configure --help'

 for details on some of the pertinent environment variables.

-   You can give `configure' initial values for configuration parameters

-by setting variables in the command line or in the environment.  Here

-is an example: