mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-22 15:03:28 +00:00
215 lines
6.8 KiB
Diff
215 lines
6.8 KiB
Diff
Eliminate use of state/node files in temp directory, which are a security concern due to insecure writing of State/Node files in a temporary directory, with predictable filenames, with a possible symlink attack.
|
|
|
|
Fixes CVE-2013-4184
|
|
|
|
https://github.com/bleargh45/Data-UUID/pull/40 by Graham TerMarsch @bleargh45
|
|
|
|
|
|
diff --git a/Makefile.PL b/Makefile.PL
|
|
index 4ca26af..fb1a0f0 100644
|
|
--- a/Makefile.PL
|
|
+++ b/Makefile.PL
|
|
@@ -89,30 +89,14 @@ WriteMakefile(
|
|
|
|
CONFIGURE => sub {
|
|
my %opt;
|
|
- GetOptions(\%opt, 's|state-storage-directory:s', 'd|default-umask:s',
|
|
- 'help|?', 'man') or pod2usage(2);
|
|
+ GetOptions(\%opt, 'help|?', 'man') or pod2usage(2);
|
|
pod2usage(1) if $opt{help};
|
|
pod2usage(-verbose => 2) if $opt{man};
|
|
|
|
print "Configured options (run perl Makefile.PL --help for how to change this):\n";
|
|
|
|
- my $d = File::Spec->tmpdir;
|
|
- $d = $opt{s} || $d;
|
|
- print "\tUUID state storage: $d\n";
|
|
- $d =~ s/\\/\\\\/g if $^O eq 'MSWin32';
|
|
-
|
|
- my $m = '0007';
|
|
- unless ($^O eq 'MSWin32') {
|
|
- $m = $opt{d} || $m;
|
|
- print "\tdefault umask: $m\n";
|
|
- }
|
|
-
|
|
- chmod(0666, sprintf("%s/%s", $d, ".UUID_NODEID"));
|
|
- chmod(0666, sprintf("%s/%s", $d, ".UUID_STATE"));
|
|
return {
|
|
- DEFINE => '-D_STDIR=' . shell_quote(c_quote($d))
|
|
- . ' -D' . shell_quote("__$Config{osname}__")
|
|
- . ' -D_DEFAULT_UMASK=' . shell_quote($m)
|
|
+ DEFINE => ' -D' . shell_quote("__$Config{osname}__")
|
|
};
|
|
}
|
|
);
|
|
@@ -127,11 +111,9 @@ Makefile.PL - configure Makefile for Data::UUID
|
|
|
|
perl Makefile.PL [options] [EU::MM options]
|
|
|
|
-perl Makefile.PL -s=/var/local/lib/data-uuid -d=0007
|
|
+perl Makefile.PL
|
|
|
|
Options:
|
|
- --state-storage-directory directory for storing library state information
|
|
- --default-umask umask for files in the state storage directory
|
|
--help brief help message
|
|
--man full documentation
|
|
|
|
@@ -141,18 +123,6 @@ Options can be abbreviated, see L<Getopt::Long/"Case and abbreviations">.
|
|
|
|
=over
|
|
|
|
-=item --state-storage-directory
|
|
-
|
|
-Optional. Takes a string that is interpreted as directory for storing library
|
|
-state information. Default is c:/tmp/ on Windows if it already exists, or the
|
|
-operating system's temporary directory (see tmpdir in L<File::Spec/"METHODS">),
|
|
-or /var/tmp as fallback.
|
|
-
|
|
-=item --default-umask
|
|
-
|
|
-Optional. Takes a string that is interpreted as umask for the files in the state
|
|
-storage directory. Default is 0007. This is ignored on Windows.
|
|
-
|
|
=item --help
|
|
|
|
Print a brief help message and exits.
|
|
@@ -165,10 +135,7 @@ Prints the manual page and exits.
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
-B<Makefile.PL> writes the Makefile for the Data::UUID library. It is configured
|
|
-with the options L</"--state-storage-directory"> and L</"--default-umask">.
|
|
-Unless given, default values are used. In any case the values are printed for
|
|
-confirmation.
|
|
+B<Makefile.PL> writes the Makefile for the Data::UUID library.
|
|
|
|
Additionally, the usual EU::MM options are processed, see
|
|
L<ExtUtils::MakeMaker/"Using Attributes and Parameters">.
|
|
diff --git a/README b/README
|
|
index 8aaa1c2..34d53a5 100644
|
|
--- a/README
|
|
+++ b/README
|
|
@@ -23,15 +23,6 @@ To install this module type the following:
|
|
make test
|
|
make install
|
|
|
|
-NOTE: This module is designed to save its state information in a permanent
|
|
-storage location. The installation script (i.e. Makefile.PL) prompts for
|
|
-a directory name to use as a storage location for state file and defaults
|
|
-this directory to "/var/tmp" if no directory name is provided.
|
|
-The installation script will not accept names of directories that do not
|
|
-exist, however, it will take the locations, which the installing user
|
|
-has no write permissions to. In this case, the state information will not be
|
|
-saved, which will maximize the chances of generating duplicate UUIDs.
|
|
-
|
|
COPYRIGHT AND LICENCE
|
|
|
|
Copyright (C) 2001, Alexander Golomshtok
|
|
diff --git a/UUID.h b/UUID.h
|
|
index dc5ea28..11d6e13 100644
|
|
--- a/UUID.h
|
|
+++ b/UUID.h
|
|
@@ -44,23 +44,6 @@
|
|
#include <process.h>
|
|
#endif
|
|
|
|
-#if !defined _STDIR
|
|
-# define _STDIR "/var/tmp"
|
|
-#endif
|
|
-#if !defined _DEFAULT_UMASK
|
|
-# define _DEFAULT_UMASK 0007
|
|
-#endif
|
|
-
|
|
-#define UUID_STATE ".UUID_STATE"
|
|
-#define UUID_NODEID ".UUID_NODEID"
|
|
-#if defined __mingw32__ || (defined _WIN32 && !defined(__cygwin__)) || defined _MSC_VER
|
|
-#define UUID_STATE_NV_STORE _STDIR"\\"UUID_STATE
|
|
-#define UUID_NODEID_NV_STORE _STDIR"\\"UUID_NODEID
|
|
-#else
|
|
-#define UUID_STATE_NV_STORE _STDIR"/"UUID_STATE
|
|
-#define UUID_NODEID_NV_STORE _STDIR"/"UUID_NODEID
|
|
-#endif
|
|
-
|
|
#define UUIDS_PER_TICK 1024
|
|
#ifdef _MSC_VER
|
|
#define I64(C) C##i64
|
|
@@ -134,7 +117,6 @@ typedef struct _uuid_state_t {
|
|
typedef struct _uuid_context_t {
|
|
uuid_state_t state;
|
|
uuid_node_t nodeid;
|
|
- perl_uuid_time_t next_save;
|
|
} uuid_context_t;
|
|
|
|
static void format_uuid_v1(
|
|
diff --git a/UUID.xs b/UUID.xs
|
|
index c3496a8..8191727 100644
|
|
--- a/UUID.xs
|
|
+++ b/UUID.xs
|
|
@@ -356,29 +356,11 @@ PREINIT:
|
|
UV one = 1;
|
|
CODE:
|
|
RETVAL = (uuid_context_t *)PerlMemShared_malloc(sizeof(uuid_context_t));
|
|
- if ((fd = fopen(UUID_STATE_NV_STORE, "rb"))) {
|
|
- fread(&(RETVAL->state), sizeof(uuid_state_t), 1, fd);
|
|
- fclose(fd);
|
|
- get_current_time(×tamp);
|
|
- RETVAL->next_save = timestamp;
|
|
- }
|
|
- if ((fd = fopen(UUID_NODEID_NV_STORE, "rb"))) {
|
|
- pid_t *hate = (pid_t *) &(RETVAL->nodeid);
|
|
- fread(&(RETVAL->nodeid), sizeof(uuid_node_t), 1, fd );
|
|
- fclose(fd);
|
|
-
|
|
- *hate += getpid();
|
|
- } else {
|
|
+
|
|
get_random_info(seed);
|
|
seed[0] |= 0x80;
|
|
memcpy(&(RETVAL->nodeid), seed, sizeof(uuid_node_t));
|
|
- mask = umask(_DEFAULT_UMASK);
|
|
- if ((fd = fopen(UUID_NODEID_NV_STORE, "wb"))) {
|
|
- fwrite(&(RETVAL->nodeid), sizeof(uuid_node_t), 1, fd);
|
|
- fclose(fd);
|
|
- };
|
|
- umask(mask);
|
|
- }
|
|
+
|
|
errno = 0;
|
|
#if DU_THREADSAFE
|
|
MUTEX_LOCK(&instances_mutex);
|
|
@@ -415,17 +397,6 @@ PPCODE:
|
|
self->state.node = self->nodeid;
|
|
self->state.ts = timestamp;
|
|
self->state.cs = clockseq;
|
|
- if (timestamp > self->next_save ) {
|
|
- mask = umask(_DEFAULT_UMASK);
|
|
- if((fd = fopen(UUID_STATE_NV_STORE, "wb"))) {
|
|
- LOCK(fd);
|
|
- fwrite(&(self->state), sizeof(uuid_state_t), 1, fd);
|
|
- UNLOCK(fd);
|
|
- fclose(fd);
|
|
- }
|
|
- umask(mask);
|
|
- self->next_save = timestamp + (10 * 10 * 1000 * 1000);
|
|
- }
|
|
ST(0) = make_ret(uuid, ix);
|
|
XSRETURN(1);
|
|
|
|
@@ -585,14 +556,6 @@ CODE:
|
|
MUTEX_UNLOCK(&instances_mutex);
|
|
if (count == 0) {
|
|
#endif
|
|
- mask = umask(_DEFAULT_UMASK);
|
|
- if ((fd = fopen(UUID_STATE_NV_STORE, "wb"))) {
|
|
- LOCK(fd);
|
|
- fwrite(&(self->state), sizeof(uuid_state_t), 1, fd);
|
|
- UNLOCK(fd);
|
|
- fclose(fd);
|
|
- };
|
|
- umask(mask);
|
|
PerlMemShared_free(self);
|
|
#if DU_THREADSAFE
|
|
}
|
|
|