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libcdio
CVE-2017-18199.patch
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File CVE-2017-18199.patch of Package libcdio
From e73a8bb23a4405b32cc7708771833f6c4e6b2426 Mon Sep 17 00:00:00 2001 From: "R. Bernstein" <rocky@gnu.org> Date: Tue, 26 Sep 2017 16:29:15 -0400 Subject: [PATCH] handle bad iso 9660 better. Fixes bug #52091 src/iso-info.c: reflect errors in getting information back in exit code lib/iso9660_fs.c: bail when we there is bad stat info for a directory change interface to report failure src/util.h: bump copyright test/data/bad-dir.iso: bad ISO 9660 test/check_bad_iso.sh: test program test/check_iso.sh.in: expect nonzero RC on failures --- lib/iso9660/iso9660_fs.c | 6 ++++- src/iso-info.c | 27 ++++++++++++++--------- src/util.c | 4 ++-- test/Makefile.am | 3 ++- test/check_bad_iso.sh | 46 +++++++++++++++++++++++++++++++++++++++ test/check_iso.sh.in | 19 ++++++++++------ test/data/Makefile.am | 1 + test/data/bad-dir.iso | Bin 0 -> 49152 bytes 8 files changed, 85 insertions(+), 21 deletions(-) create mode 100755 test/check_bad_iso.sh create mode 100644 test/data/bad-dir.iso diff --git a/lib/iso9660/iso9660_fs.c b/lib/iso9660/iso9660_fs.c index 8758a234..d3fb4069 100644 --- a/lib/iso9660/iso9660_fs.c +++ b/lib/iso9660/iso9660_fs.c @@ -1,5 +1,5 @@ /* - Copyright (C) 2003-2008, 2011-2015 Rocky Bernstein <rocky@gnu.org> + Copyright (C) 2003-2008, 2011-2015, 2017 Rocky Bernstein <rocky@gnu.org> Copyright (C) 2001 Herbert Valerio Riedel <hvr@gnu.org> This program is free software: you can redistribute it and/or modify @@ -1394,6 +1394,10 @@ iso9660_ifs_readdir (iso9660_t *p_iso, const char psz_path[]) if (p_iso9660_stat) _cdio_list_append (retval, p_iso9660_stat); + else { + cdio_warn("Invalid directory stat at offset %lu", (unsigned long)offset); + break; + } offset += iso9660_get_dir_len(p_iso9660_dir); } diff --git a/src/iso-info.c b/src/iso-info.c index 212ab335..b8a360e0 100644 --- a/src/iso-info.c +++ b/src/iso-info.c @@ -1,5 +1,6 @@ /* - Copyright (C) 2004-2006, 2008, 2012-2014 Rocky Bernstein <rocky@gnu.org> + Copyright (C) 2004-2006, 2008, 2012-2014, 2017 Rocky Bernstein + <rocky@gnu.org> This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -212,7 +213,7 @@ _log_handler (cdio_log_level_t level, const char message[]) gl_default_cdio_log_handler (level, message); } -static void +static int print_iso9660_recurse (iso9660_t *p_iso, const char psz_path[]) { CdioList_t *entlist; @@ -222,6 +223,7 @@ print_iso9660_recurse (iso9660_t *p_iso, const char psz_path[]) char *translated_name = (char *) malloc(4096); size_t translated_name_size = 4096; entlist = iso9660_ifs_readdir (p_iso, psz_path); + int rc = 0; if (opts.print_iso9660) { printf ("%s:\n", psz_path); @@ -231,7 +233,7 @@ print_iso9660_recurse (iso9660_t *p_iso, const char psz_path[]) free(translated_name); free(dirlist); report( stderr, "Error getting above directory information\n" ); - return; + return 1; } /* Iterate over files in this directory */ @@ -241,13 +243,16 @@ print_iso9660_recurse (iso9660_t *p_iso, const char psz_path[]) iso9660_stat_t *p_statbuf = _cdio_list_node_data (entnode); char *psz_iso_name = p_statbuf->filename; char _fullname[4096] = { 0, }; - if (strlen(psz_iso_name) >= translated_name_size) { + if (strlen(psz_iso_name) == 0) + continue; + + if (strlen(psz_iso_name) >= translated_name_size) { translated_name_size = strlen(psz_iso_name)+1; free(translated_name); translated_name = (char *) malloc(translated_name_size); if (!translated_name) { report( stderr, "Error allocating memory\n" ); - return; + return 2; } } @@ -297,16 +302,17 @@ print_iso9660_recurse (iso9660_t *p_iso, const char psz_path[]) { char *_fullname = _cdio_list_node_data (entnode); - print_iso9660_recurse (p_iso, _fullname); + rc += print_iso9660_recurse (p_iso, _fullname); } _cdio_list_free (dirlist, true); + return rc; } -static void +static int print_iso9660_fs (iso9660_t *iso) { - print_iso9660_recurse (iso, "/"); + return print_iso9660_recurse (iso, "/"); } static void @@ -429,6 +435,7 @@ main(int argc, char *argv[]) iso9660_t *p_iso=NULL; iso_extension_mask_t iso_extension_mask = ISO_EXTENSION_ALL; + int rc = EXIT_SUCCESS; init(); @@ -498,7 +505,7 @@ main(int argc, char *argv[]) printf("Note: both -f and -l options given -- " "-l (long listing) takes precidence\n"); } - print_iso9660_fs(p_iso); + rc = print_iso9660_fs(p_iso); } else if (opts.print_udf) { print_udf_fs(); } @@ -508,5 +515,5 @@ main(int argc, char *argv[]) iso9660_close(p_iso); /* Not reached:*/ free(program_name); - return(EXIT_SUCCESS); + return(rc); } diff --git a/src/util.c b/src/util.c index 4062ee2a..ad44a97c 100644 --- a/src/util.c +++ b/src/util.c @@ -1,5 +1,5 @@ /* - Copyright (C) 2003-2010, 2012-2014 Rocky Bernstein <rocky@gnu.org> + Copyright (C) 2003-2010, 2012-2014, 2017 Rocky Bernstein <rocky@gnu.org> This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -56,7 +56,7 @@ print_version (char *program_name, const char *version, if (no_header == 0) { report( stdout, "%s version %s\n" - "Copyright (c) 2003-2005, 2007-2008, 2011-2015 " + "Copyright (c) 2003-2005, 2007-2008, 2011-2015, 2017 " "R. Bernstein\n", program_name, version); report( stdout, diff --git a/test/Makefile.am b/test/Makefile.am index a2c57de2..cd370745 100644 --- a/test/Makefile.am +++ b/test/Makefile.am @@ -47,7 +47,8 @@ test_lib_driver_util_LDADD = $(LIBCDIO_LIBS) $(LTLIBICONV) testpregap_LDADD = $(LIBCDIO_LIBS) $(LTLIBICONV) check_SCRIPTS = check_nrg.sh check_cue.sh check_cd_read.sh check_udf.sh \ - check_iso.sh check_fuzzyiso.sh check_opts.sh \ + check_iso.sh check_bad_iso.sh \ + check_fuzzyiso.sh check_opts.sh \ check_iso_read.sh check_cdtext.sh check_udf.sh: @abs_top_builddir@/example/extract$(EXEEXT) diff --git a/test/check_bad_iso.sh b/test/check_bad_iso.sh new file mode 100755 index 00000000..1ca3b6ca --- /dev/null +++ b/test/check_bad_iso.sh @@ -0,0 +1,46 @@ +#!/bin/sh + +if test "X$abs_top_srcdir" = "X" ; then + abs_top_srcdir=/src/external-vcs/savannah/libcdio +fi + +if test -z $srcdir ; then + srcdir=$(pwd) +fi + +if test "X$top_builddir" = "X" ; then + top_builddir=$(pwd)/.. +fi + +. ${top_builddir}/test/check_common_fn + +if test ! -x ../src/iso-info ; then + exit 77 +fi + +BASE=$(basename $0 .sh) +fname=bad-dir + +RC=0 + +opts="--quiet ${abs_top_srcdir}/test/data/${fname}.iso" +cmdname=iso-info +cmd=../src/iso-info +if ! "${cmd}" --no-header ${opts} 2>&1 ; then + echo "$0: unexpected failure" + RC=1 +fi + +opts="--quiet ${abs_top_srcdir}/test/data/${fname}.iso --iso9660" +if "${cmd}" --no-header ${opts} 2>&1 ; then + ((RC+=1)) +else + echo "$0: expected failure" +fi + +exit $RC + +#;;; Local Variables: *** +#;;; mode:shell-script *** +#;;; eval: (sh-set-shell "bash") *** +#;;; End: *** diff --git a/test/check_iso.sh.in b/test/check_iso.sh.in index c3e219b8..7ccf82cf 100755 --- a/test/check_iso.sh.in +++ b/test/check_iso.sh.in @@ -1,11 +1,11 @@ -#!/bin/sh +#!@SHELL@ if test -z $srcdir ; then - srcdir=`pwd` + srcdir=$(pwd) fi if test "X$top_builddir" = "X" ; then - top_builddir=`pwd`/.. + top_builddir=$(pwd)/.. fi . ${top_builddir}/test/check_common_fn @@ -14,7 +14,7 @@ if test ! -x ../src/iso-info@EXEEXT@ ; then exit 77 fi -BASE=`basename $0 .sh` +BASE=$(basename $0 .sh) fname=copying opts="--quiet ${srcdir}/data/${fname}.iso --iso9660 " @@ -46,7 +46,7 @@ if test -n "@HAVE_ROCK@"; then fi if test -n "@HAVE_JOLIET@" ; then - BASE=`basename $0 .sh` + BASE=$(basename $0 .sh) fname=joliet opts="--quiet ${srcdir}/data/${fname}.iso --iso9660 " test_iso_info "$opts" ${fname}-nojoliet.dump ${srcdir}/${fname}.right @@ -62,8 +62,13 @@ fi for fname in malformed malformed2; do opts="--quiet ${srcdir}/data/${fname}.iso -f " test_iso_info "$opts" ${fname}.dump ${srcdir}/${fname}.right - RC=$? - check_result $RC "iso-info $fname test" "$cmdline" + BAD_RC=$? + if test $BAD_RC -ne 0 ; then + check_result 0 "iso-info $fname test" "$cmdline" + else + echo "$0: in $fname Expecting nonzero return" + RC=1 + fi done diff --git a/test/data/Makefile.am b/test/data/Makefile.am index 5e913cf9..1b8a5655 100644 --- a/test/data/Makefile.am +++ b/test/data/Makefile.am @@ -5,6 +5,7 @@ check_DATA = \ bad-cat2.toc \ bad-cat3.cue \ bad-cat3.toc \ + bad-dir.iso \ bad-file.toc \ bad-mode1.cue \ bad-mode1.toc \ diff --git a/test/data/bad-dir.iso b/test/data/bad-dir.iso File test/data/bad-dir.iso: git binary diffs are not supported. -- 2.17.0
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