+++ /dev/null
-Submitted By: Ken Moffat <ken@kenmoffat.uklinux.net>
-Date: 2005-07-29
-Initial Package Version: 2.6
-Upstream Status: Unknown
-Origin: from Mandrake
-Description: Vulnerability fixes, rediffed so that they all apply with
- -p1 and consolidated to single patch. Also applicable to earlier versions.
-(1.) CAN-1999-1572 (still seems to apply to 2.6) cpio uses a 0 umask when
-creating files with -O or -F options, which creates the files with mode 0666
-and allows local users to overwrite them. Fix originally fom debian.
-(2.) CAN-2005-1111 Race condition in 2.6 and earlier allows local users to
-modify permissions of arbitrary files via a hard-link attack. Fix
-originally from fedora.
-(3.) CAN-2005-1229 Directory traversal vulnerability allows remote
-attackers to write to arbitrary directories via a dot dot in a cpio file.
-Fix by Peter Vrabec at RedHat.
-
-diff -Naur cpio-2.6.vanilla/doc/cpio.1 cpio-2.6/doc/cpio.1
---- cpio-2.6.vanilla/doc/cpio.1 2004-08-30 17:21:48.000000000 +0100
-+++ cpio-2.6/doc/cpio.1 2005-07-29 13:46:42.000000000 +0100
-@@ -20,7 +20,7 @@
- [\-\-unconditional] [\-\-verbose] [\-\-block-size=blocks] [\-\-swap-halfwords]
- [\-\-io-size=bytes] [\-\-pattern-file=file] [\-\-format=format]
- [\-\-owner=[user][:.][group]] [\-\-no-preserve-owner] [\-\-message=message]
--[\-\-force\-local] [\-\-no\-absolute\-filenames] [\-\-sparse]
-+[\-\-force\-local] [\-\-absolute\-filenames] [\-\-sparse]
- [\-\-only\-verify\-crc] [\-\-quiet] [\-\-rsh-command=command] [\-\-help]
- [\-\-version] [pattern...] [< archive]
-
-diff -Naur cpio-2.6.vanilla/doc/cpio.info cpio-2.6/doc/cpio.info
---- cpio-2.6.vanilla/doc/cpio.info 2004-02-27 12:42:01.000000000 +0000
-+++ cpio-2.6/doc/cpio.info 2005-07-29 13:46:42.000000000 +0100
-@@ -203,7 +203,7 @@
- [--swap-halfwords] [--io-size=bytes] [--pattern-file=file]
- [--format=format] [--owner=[user][:.][group]]
- [--no-preserve-owner] [--message=message] [--help] [--version]
-- [-no-absolute-filenames] [--sparse] [-only-verify-crc] [-quiet]
-+ [--absolute-filenames] [--sparse] [-only-verify-crc] [-quiet]
- [--rsh-command=command] [pattern...] [< archive]
-
- \1f
-@@ -358,9 +358,9 @@
- Show numeric UID and GID instead of translating them into names
- when using the `--verbose option'.
-
--`--no-absolute-filenames'
-- Create all files relative to the current directory in copy-in
-- mode, even if they have an absolute file name in the archive.
-+`--absolute-filenames'
-+ Do not strip leading file name components that contain ".."
-+ and leading slashes from file names in copy-in mode
-
- `--no-preserve-owner'
- Do not change the ownership of the files; leave them owned by the
-diff -Naur cpio-2.6.vanilla/src/copyin.c cpio-2.6/src/copyin.c
---- cpio-2.6.vanilla/src/copyin.c 2004-09-08 12:10:02.000000000 +0100
-+++ cpio-2.6/src/copyin.c 2005-07-29 13:46:42.000000000 +0100
-@@ -25,6 +25,7 @@
- #include "dstring.h"
- #include "extern.h"
- #include "defer.h"
-+#include "dirname.h"
- #include <rmt.h>
- #ifndef FNM_PATHNAME
- #include <fnmatch.h>
-@@ -389,19 +390,26 @@
- continue;
- }
-
-- if (close (out_file_des) < 0)
-- error (0, errno, "%s", d->header.c_name);
--
-+ /*
-+ * Avoid race condition.
-+ * Set chown and chmod before closing the file desc.
-+ * pvrabec@redhat.com
-+ */
-+
- /* File is now copied; set attributes. */
- if (!no_chown_flag)
-- if ((chown (d->header.c_name,
-+ if ((fchown (out_file_des,
- set_owner_flag ? set_owner : d->header.c_uid,
- set_group_flag ? set_group : d->header.c_gid) < 0)
- && errno != EPERM)
- error (0, errno, "%s", d->header.c_name);
- /* chown may have turned off some permissions we wanted. */
-- if (chmod (d->header.c_name, (int) d->header.c_mode) < 0)
-+ if (fchmod (out_file_des, (int) d->header.c_mode) < 0)
- error (0, errno, "%s", d->header.c_name);
-+
-+ if (close (out_file_des) < 0)
-+ error (0, errno, "%s", d->header.c_name);
-+
- if (retain_time_flag)
- {
- times.actime = times.modtime = d->header.c_mtime;
-@@ -557,6 +565,25 @@
- write (out_file_des, "", 1);
- delayed_seek_count = 0;
- }
-+
-+ /*
-+ * Avoid race condition.
-+ * Set chown and chmod before closing the file desc.
-+ * pvrabec@redhat.com
-+ */
-+
-+ /* File is now copied; set attributes. */
-+ if (!no_chown_flag)
-+ if ((fchown (out_file_des,
-+ set_owner_flag ? set_owner : file_hdr->c_uid,
-+ set_group_flag ? set_group : file_hdr->c_gid) < 0)
-+ && errno != EPERM)
-+ error (0, errno, "%s", file_hdr->c_name);
-+
-+ /* chown may have turned off some permissions we wanted. */
-+ if (fchmod (out_file_des, (int) file_hdr->c_mode) < 0)
-+ error (0, errno, "%s", file_hdr->c_name);
-+
- if (close (out_file_des) < 0)
- error (0, errno, "%s", file_hdr->c_name);
-
-@@ -567,18 +594,6 @@
- file_hdr->c_name, crc, file_hdr->c_chksum);
- }
-
-- /* File is now copied; set attributes. */
-- if (!no_chown_flag)
-- if ((chown (file_hdr->c_name,
-- set_owner_flag ? set_owner : file_hdr->c_uid,
-- set_group_flag ? set_group : file_hdr->c_gid) < 0)
-- && errno != EPERM)
-- error (0, errno, "%s", file_hdr->c_name);
--
-- /* chown may have turned off some permissions we wanted. */
-- if (chmod (file_hdr->c_name, (int) file_hdr->c_mode) < 0)
-- error (0, errno, "%s", file_hdr->c_name);
--
- if (retain_time_flag)
- {
- struct utimbuf times; /* For setting file times. */
-@@ -589,7 +604,7 @@
- if (utime (file_hdr->c_name, ×) < 0)
- error (0, errno, "%s", file_hdr->c_name);
- }
--
-+
- tape_skip_padding (in_file_des, file_hdr->c_filesize);
- if (file_hdr->c_nlink > 1
- && (archive_format == arf_newascii || archive_format == arf_crcascii) )
-@@ -1335,6 +1350,53 @@
- }
- }
-
-+/* Return a safer suffix of FILE_NAME, or "." if it has no safer
-+ suffix. Check for fully specified file names and other atrocities. */
-+
-+static const char *
-+safer_name_suffix (char const *file_name)
-+{
-+ char const *p;
-+
-+ /* Skip file system prefixes, leading file name components that contain
-+ "..", and leading slashes. */
-+
-+ size_t prefix_len = FILE_SYSTEM_PREFIX_LEN (file_name);
-+
-+ for (p = file_name + prefix_len; *p;)
-+ {
-+ if (p[0] == '.' && p[1] == '.' && (ISSLASH (p[2]) || !p[2]))
-+ prefix_len = p + 2 - file_name;
-+
-+ do
-+ {
-+ char c = *p++;
-+ if (ISSLASH (c))
-+ break;
-+ }
-+ while (*p);
-+ }
-+
-+ for (p = file_name + prefix_len; ISSLASH (*p); p++)
-+ continue;
-+ prefix_len = p - file_name;
-+
-+ if (prefix_len)
-+ {
-+ char *prefix = alloca (prefix_len + 1);
-+ memcpy (prefix, file_name, prefix_len);
-+ prefix[prefix_len] = '\0';
-+
-+
-+ error (0, 0, _("Removing leading `%s' from member names"), prefix);
-+ }
-+
-+ if (!*p)
-+ p = ".";
-+
-+ return p;
-+}
-+
- /* Read the collection from standard input and create files
- in the file system. */
-
-@@ -1445,18 +1507,11 @@
-
- /* Do we have to ignore absolute paths, and if so, does the filename
- have an absolute path? */
-- if (no_abs_paths_flag && file_hdr.c_name && file_hdr.c_name [0] == '/')
-+ if (!abs_paths_flag && file_hdr.c_name && file_hdr.c_name [0])
- {
-- char *p;
-+ const char *p = safer_name_suffix (file_hdr.c_name);
-
-- p = file_hdr.c_name;
-- while (*p == '/')
-- ++p;
-- if (*p == '\0')
-- {
-- strcpy (file_hdr.c_name, ".");
-- }
-- else
-+ if (p != file_hdr.c_name)
- {
- /* Debian hack: file_hrd.c_name is sometimes set to
- point to static memory by code in tar.c. This
-diff -Naur cpio-2.6.vanilla/src/copypass.c cpio-2.6/src/copypass.c
---- cpio-2.6.vanilla/src/copypass.c 2004-09-06 13:09:04.000000000 +0100
-+++ cpio-2.6/src/copypass.c 2005-07-29 13:46:07.000000000 +0100
-@@ -181,19 +181,25 @@
- }
- if (close (in_file_des) < 0)
- error (0, errno, "%s", input_name.ds_string);
-- if (close (out_file_des) < 0)
-- error (0, errno, "%s", output_name.ds_string);
--
-+ /*
-+ * Avoid race condition.
-+ * Set chown and chmod before closing the file desc.
-+ * pvrabec@redhat.com
-+ */
- /* Set the attributes of the new file. */
- if (!no_chown_flag)
-- if ((chown (output_name.ds_string,
-+ if ((fchown (out_file_des,
- set_owner_flag ? set_owner : in_file_stat.st_uid,
- set_group_flag ? set_group : in_file_stat.st_gid) < 0)
- && errno != EPERM)
- error (0, errno, "%s", output_name.ds_string);
- /* chown may have turned off some permissions we wanted. */
-- if (chmod (output_name.ds_string, in_file_stat.st_mode) < 0)
-+ if (fchmod (out_file_des, in_file_stat.st_mode) < 0)
-+ error (0, errno, "%s", output_name.ds_string);
-+
-+ if (close (out_file_des) < 0)
- error (0, errno, "%s", output_name.ds_string);
-+
- if (reset_time_flag)
- {
- times.actime = in_file_stat.st_atime;
-diff -Naur cpio-2.6.vanilla/src/extern.h cpio-2.6/src/extern.h
---- cpio-2.6.vanilla/src/extern.h 2004-09-08 11:49:57.000000000 +0100
-+++ cpio-2.6/src/extern.h 2005-07-29 13:47:34.000000000 +0100
-@@ -46,7 +46,7 @@
- extern int sparse_flag;
- extern int quiet_flag;
- extern int only_verify_crc_flag;
--extern int no_abs_paths_flag;
-+extern int abs_paths_flag;
- extern unsigned int warn_option;
-
- /* Values for warn_option */
-@@ -91,6 +91,7 @@
- extern char input_is_seekable;
- extern char output_is_seekable;
- extern char *program_name;
-+extern mode_t sys_umask;
- extern int (*xstat) ();
- extern void (*copy_function) ();
- \f
-diff -Naur cpio-2.6.vanilla/src/global.c cpio-2.6/src/global.c
---- cpio-2.6.vanilla/src/global.c 2004-09-08 11:23:44.000000000 +0100
-+++ cpio-2.6/src/global.c 2005-07-29 13:47:34.000000000 +0100
-@@ -100,7 +100,7 @@
- int only_verify_crc_flag = false;
-
- /* If true, don't use any absolute paths, prefix them by `./'. */
--int no_abs_paths_flag = false;
-+int abs_paths_flag = false;
-
- #ifdef DEBUG_CPIO
- /* If true, print debugging information. */
-@@ -195,6 +195,9 @@
- /* The name this program was run with. */
- char *program_name;
-
-+/* Debian hack to make the -d option honor the umask. */
-+mode_t sys_umask;
-+
- /* A pointer to either lstat or stat, depending on whether
- dereferencing of symlinks is done for input files. */
- int (*xstat) ();
-diff -Naur cpio-2.6.vanilla/src/main.c cpio-2.6/src/main.c
---- cpio-2.6.vanilla/src/main.c 2004-11-23 00:42:18.000000000 +0000
-+++ cpio-2.6/src/main.c 2005-07-29 13:47:34.000000000 +0100
-@@ -41,6 +41,7 @@
-
- enum cpio_options {
- NO_ABSOLUTE_FILENAMES_OPTION=256,
-+ ABSOLUTE_FILENAMES_OPTION,
- NO_PRESERVE_OWNER_OPTION,
- ONLY_VERIFY_CRC_OPTION,
- RENAME_BATCH_FILE_OPTION,
-@@ -134,6 +135,8 @@
- N_("In copy-in mode, read additional patterns specifying filenames to extract or list from FILE"), 210},
- {"no-absolute-filenames", NO_ABSOLUTE_FILENAMES_OPTION, 0, 0,
- N_("Create all files relative to the current directory"), 210},
-+ {"absolute-filenames", ABSOLUTE_FILENAMES_OPTION, 0, 0,
-+ N_("do not strip leading file name components that contain \"..\" and leading slashes from file names"), 210},
- {"only-verify-crc", ONLY_VERIFY_CRC_OPTION, 0, 0,
- N_("When reading a CRC format archive in copy-in mode, only verify the CRC's of each file in the archive, don't actually extract the files"), 210},
- {"rename", 'r', 0, 0,
-@@ -392,7 +395,11 @@
- break;
-
- case NO_ABSOLUTE_FILENAMES_OPTION: /* --no-absolute-filenames */
-- no_abs_paths_flag = true;
-+ abs_paths_flag = false;
-+ break;
-+
-+ case ABSOLUTE_FILENAMES_OPTION: /* --absolute-filenames */
-+ abs_paths_flag = true;
- break;
-
- case NO_PRESERVE_OWNER_OPTION: /* --no-preserve-owner */
-@@ -631,7 +638,7 @@
- _("--append is used but no archive file name is given (use -F or -O options")));
-
- CHECK_USAGE(rename_batch_file, "--rename-batch-file", "--create");
-- CHECK_USAGE(no_abs_paths_flag, "--no-absolute-pathnames", "--create");
-+ CHECK_USAGE(abs_paths_flag, "--absolute-pathnames", "--create");
- CHECK_USAGE(input_archive_name, "-I", "--create");
- if (archive_name && output_archive_name)
- USAGE_ERROR ((0, 0, _("Both -O and -F are used in copy-out mode")));
-@@ -658,7 +665,7 @@
- CHECK_USAGE(rename_flag, "--rename", "--pass-through");
- CHECK_USAGE(append_flag, "--append", "--pass-through");
- CHECK_USAGE(rename_batch_file, "--rename-batch-file", "--pass-through");
-- CHECK_USAGE(no_abs_paths_flag, "--no-absolute-pathnames",
-+ CHECK_USAGE(abs_paths_flag, "--absolute-pathnames",
- "--pass-through");
- CHECK_USAGE(to_stdout_option, "--to-stdout", "--pass-through");
-
-@@ -740,7 +747,6 @@
- textdomain (PACKAGE);
-
- program_name = argv[0];
-- umask (0);
-
- #ifdef __TURBOC__
- _fmode = O_BINARY; /* Put stdin and stdout in binary mode. */
-@@ -751,6 +757,7 @@
- #endif
-
- process_args (argc, argv);
-+ sys_umask = umask (0);
-
- initialize_buffers ();
-
projects / ipfire-2.x.git / commitdiff
