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Sanitize of MC_EXT_SELECTED variable when viewing multiple files

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- CVE-2012-4463 (rhbz#862814)
- https://www.midnight-commander.org/ticket/2913
This commit is contained in:
Jindrich Novy 2012-11-28 11:14:27 +01:00
parent e745b3bcbd
commit 269b62f828
2 changed files with 39 additions and 1 deletions
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31
mc-ext.c_quote_mc_ext_env_vars.diff Normal file
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@ -0,0 +1,31 @@
--- ./src/filemanager/ext.c
+++ ./src/filemanager/ext.c
@@ -155,12 +155,13 @@
{
const char symbol;
const char *name;
+ const char *delim;
} export_variables[] = {
- {'p', "MC_EXT_BASENAME"},
- {'d', "MC_EXT_CURRENTDIR"},
- {'s', "MC_EXT_SELECTED"},
- {'t', "MC_EXT_ONLYTAGGED"},
- {'\0', NULL}
+ {'p', "MC_EXT_BASENAME", ""},
+ {'d', "MC_EXT_CURRENTDIR", ""},
+ {'s', "MC_EXT_SELECTED", "\""},
+ {'t', "MC_EXT_ONLYTAGGED", "\""},
+ {'\0', NULL, 0}
};
/* *INDENT-ON* */
@@ -178,7 +179,8 @@
if (text != NULL)
{
g_string_append_printf (export_vars_string,
- "%s=%s\nexport %s\n", export_variables[i].name, text,
+ "%s=%s%s%s\nexport %s\n", export_variables[i].name,
+ export_variables[i].delim, text, export_variables[i].delim,
export_variables[i].name);
g_free (text);
}

9
mc.spec
View File

@ -1,12 +1,13 @@
Summary: User-friendly text console file manager and visual shell
Name: mc
Version: 4.8.6
Release: 1%{?dist}
Release: 2%{?dist}
Epoch: 1
License: GPLv3+
Group: System Environment/Shells
Source0: http://www.midnight-commander.org/downloads/mc-%{version}.tar.xz
URL: http://www.midnight-commander.org/
Patch0: mc-ext.c_quote_mc_ext_env_vars.diff
BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
BuildRequires: glib2-devel e2fsprogs-devel slang-devel gpm-devel groff
BuildRequires: aspell-devel libssh2-devel >= 1.2.5
@ -20,6 +21,7 @@ specific files.
%prep
%setup -q
%patch0 -p1 -b .CVE-2012-4463
%build
export CFLAGS="-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE $RPM_OPT_FLAGS -Wno-strict-aliasing"
@ -75,6 +77,11 @@ rm -rf $RPM_BUILD_ROOT
%dir %{_libexecdir}/mc/ext.d
%changelog
* Wed Nov 28 2012 Jindrich Novy <jnovy@redhat.com> 4.8.6-2
- sanitize of MC_EXT_SELECTED variable when viewing
multiple files, CVE-2012-4463 (#862814)
https://www.midnight-commander.org/ticket/2913
* Thu Sep 20 2012 Jindrich Novy <jnovy@redhat.com> 4.8.6-1
- update to 4.8.6 (#857512)