diff options
Diffstat (limited to 'gnu/packages/patches/cpio-CVE-2014-9112-pt1.patch')
| -rw-r--r-- | gnu/packages/patches/cpio-CVE-2014-9112-pt1.patch | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/gnu/packages/patches/cpio-CVE-2014-9112-pt1.patch b/gnu/packages/patches/cpio-CVE-2014-9112-pt1.patch new file mode 100644 index 0000000000..1224c6c22d --- /dev/null +++ b/gnu/packages/patches/cpio-CVE-2014-9112-pt1.patch @@ -0,0 +1,231 @@ +Partially fix CVE-2014-9112, part 1/5. Backported to 2.11. + +From 746f3ff670dcfcdd28fcc990e79cd6fccc7ae48d Mon Sep 17 00:00:00 2001 +From: Sergey Poznyakoff <gray@gnu.org.ua> +Date: Mon, 01 Dec 2014 13:15:28 +0000 +Subject: Fix memory overrun on reading improperly created link records. + +See http://lists.gnu.org/archive/html/bug-cpio/2014-11/msg00007.html + +* src/copyin.c (get_link_name): New function. +(list_file, copyin_link): use get_link_name + +* tests/symlink-bad-length.at: New file. +* tests/symlink-long.at: New file. +* tests/Makefile.am: Add new files. +* tests/testsuite.at: Likewise. +--- +diff --git a/src/copyin.c b/src/copyin.c +index 38d809f..c502c7d 100644 +--- a/src/copyin.c ++++ b/src/copyin.c +@@ -124,10 +124,30 @@ tape_skip_padding (int in_file_des, off_t offset) + if (pad != 0) + tape_toss_input (in_file_des, pad); + } +- ++ ++static char * ++get_link_name (struct cpio_file_stat *file_hdr, int in_file_des) ++{ ++ off_t n = file_hdr->c_filesize + 1; ++ char *link_name; ++ ++ if (n == 0 || n > SIZE_MAX) ++ { ++ error (0, 0, _("%s: stored filename length too big"), file_hdr->c_name); ++ link_name = NULL; ++ } ++ else ++ { ++ link_name = xmalloc (n); ++ tape_buffered_read (link_name, in_file_des, file_hdr->c_filesize); ++ link_name[file_hdr->c_filesize] = '\0'; ++ tape_skip_padding (in_file_des, file_hdr->c_filesize); ++ } ++ return link_name; ++} + + static void +-list_file(struct cpio_file_stat* file_hdr, int in_file_des) ++list_file (struct cpio_file_stat* file_hdr, int in_file_des) + { + if (verbose_flag) + { +@@ -136,21 +156,16 @@ list_file(struct cpio_file_stat* file_hdr, int in_file_des) + { + if (archive_format != arf_tar && archive_format != arf_ustar) + { +- char *link_name = NULL; /* Name of hard and symbolic links. */ +- +- link_name = (char *) xmalloc ((unsigned int) file_hdr->c_filesize + 1); +- link_name[file_hdr->c_filesize] = '\0'; +- tape_buffered_read (link_name, in_file_des, file_hdr->c_filesize); +- long_format (file_hdr, link_name); +- free (link_name); +- tape_skip_padding (in_file_des, file_hdr->c_filesize); +- return; ++ char *link_name = get_link_name (file_hdr, in_file_des); ++ if (link_name) ++ { ++ long_format (file_hdr, link_name); ++ free (link_name); ++ } + } + else +- { +- long_format (file_hdr, file_hdr->c_tar_linkname); +- return; +- } ++ long_format (file_hdr, file_hdr->c_tar_linkname); ++ return; + } + else + #endif +@@ -650,10 +665,7 @@ copyin_link(struct cpio_file_stat *file_ + + if (archive_format != arf_tar && archive_format != arf_ustar) + { +- link_name = (char *) xmalloc ((unsigned int) file_hdr->c_filesize + 1); +- link_name[file_hdr->c_filesize] = '\0'; +- tape_buffered_read (link_name, in_file_des, file_hdr->c_filesize); +- tape_skip_padding (in_file_des, file_hdr->c_filesize); ++ link_name = get_link_name (file_hdr, in_file_des); + } + else + { +diff --git a/tests/Makefile.am b/tests/Makefile.am +index 3f714d1..b4ca92d 100644 +--- a/tests/Makefile.am ++++ b/tests/Makefile.am +@@ -52,6 +52,8 @@ TESTSUITE_AT = \ + setstat04.at\ + setstat05.at\ + symlink.at\ ++ symlink-bad-length.at\ ++ symlink-long.at\ + version.at + + TESTSUITE = $(srcdir)/testsuite +diff --git a/tests/symlink-bad-length.at b/tests/symlink-bad-length.at +new file mode 100644 +index 0000000..6f804b1 +--- a/dev/null ++++ b/tests/symlink-bad-length.at +@@ -0,0 +1,49 @@ ++# Process this file with autom4te to create testsuite. -*- Autotest -*- ++# Copyright (C) 2014 Free Software Foundation, Inc. ++ ++# 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 ++# the Free Software Foundation; either version 3, or (at your option) ++# any later version. ++ ++# This program is distributed in the hope that it will be useful, ++# but WITHOUT ANY WARRANTY; without even the implied warranty of ++# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++# GNU General Public License for more details. ++ ++# You should have received a copy of the GNU General Public License ++# along with this program; if not, write to the Free Software ++# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA ++# 02110-1301 USA. ++ ++# Cpio v2.11 did segfault with badly set symlink length. ++# References: ++# http://lists.gnu.org/archive/html/bug-cpio/2014-11/msg00007.html ++ ++AT_SETUP([symlink-bad-length]) ++AT_KEYWORDS([symlink-long copyout]) ++ ++AT_DATA([ARCHIVE.base64], ++[x3EjAIBAtIEtJy8nAQAAAHRUYW0FAAAADQBGSUxFAABzb21lIGNvbnRlbnQKAMdxIwBgQ/+hLScv ++JwEAAAB0VEhuBQD/////TElOSwAARklMRcdxAAAAAAAAAAAAAAEAAAAAAAAACwAAAAAAVFJBSUxF ++UiEhIQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA ++AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA ++AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA ++AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA ++AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA ++AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA ++AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA= ++]) ++ ++AT_CHECK([ ++base64 -d ARCHIVE.base64 > ARCHIVE || AT_SKIP_TEST ++cpio -ntv < ARCHIVE ++test $? -eq 2 ++], ++[0], ++[-rw-rw-r-- 1 10029 10031 13 Nov 25 13:52 FILE ++],[cpio: LINK: stored filename length too big ++cpio: premature end of file ++]) ++ ++AT_CLEANUP +diff --git a/tests/symlink-long.at b/tests/symlink-long.at +new file mode 100644 +index 0000000..d3def2d +--- a/dev/null ++++ b/tests/symlink-long.at +@@ -0,0 +1,46 @@ ++# Process this file with autom4te to create testsuite. -*- Autotest -*- ++# Copyright (C) 2014 Free Software Foundation, Inc. ++ ++# This program is free software; you can redistribute it and/or modify ++# it under the terms of the GNU General Public License as published by ++# the Free Software Foundation; either version 3, or (at your option) ++# any later version. ++ ++# This program is distributed in the hope that it will be useful, ++# but WITHOUT ANY WARRANTY; without even the implied warranty of ++# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ++# GNU General Public License for more details. ++ ++# You should have received a copy of the GNU General Public License ++# along with this program; if not, write to the Free Software ++# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA ++# 02110-1301 USA. ++ ++# Cpio v2.11.90 changed the way symlink name is read from archive. ++# References: ++# http://lists.gnu.org/archive/html/bug-cpio/2014-11/msg00007.html ++ ++AT_SETUP([symlink-long]) ++AT_KEYWORDS([symlink-long copyout]) ++ ++AT_CHECK([ ++ ++# len(dirname) > READBUFSIZE ++dirname= ++for i in {1..52}; do ++ dirname="xxxxxxxxx/$dirname" ++ mkdir "$dirname" ++done ++ln -s "$dirname" x || AT_SKIP_TEST ++ ++echo x | cpio -o > ar ++list=`cpio -tv < ar | sed 's|.*-> ||'` ++test "$list" = "$dirname" && echo success || echo fail ++], ++[0], ++[success ++],[2 blocks ++2 blocks ++]) ++ ++AT_CLEANUP +diff --git a/tests/testsuite.at b/tests/testsuite.at +index e67689f..3b5377e 100644 +--- a/tests/testsuite.at ++++ b/tests/testsuite.at +@@ -31,6 +31,8 @@ m4_include([version.at]) + + m4_include([inout.at]) + m4_include([symlink.at]) ++m4_include([symlink-bad-length.at]) ++m4_include([symlink-long.at]) + m4_include([interdir.at]) + + m4_include([setstat01.at]) +-- +cgit v0.9.0.2 |