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From 89f864c547014646e71862df3664e3ff33d7143d Mon Sep 17 00:00:00 2001
From: Remi Collet <remi@php.net>
Date: Tue, 18 Feb 2014 13:54:33 +0100
Subject: [PATCH] Fixed Bug #66731 file: infinite recursion
Upstream commit (available in file-5.17)
https://github.com/glensc/file/commit/3c081560c23f20b2985c285338b52c7aae9fdb0f
https://github.com/glensc/file/commit/cc9e74dfeca5265ad725acc926ef0b8d2a18ee70
---
ext/fileinfo/libmagic/ascmagic.c | 2 +-
ext/fileinfo/libmagic/file.h | 2 +-
ext/fileinfo/libmagic/funcs.c | 2 +-
ext/fileinfo/libmagic/softmagic.c | 8 ++++---
ext/fileinfo/tests/cve-2014-1943.phpt | 39 +++++++++++++++++++++++++++++++++++
5 files changed, 47 insertions(+), 6 deletions(-)
create mode 100644 ext/fileinfo/tests/cve-2014-1943.phpt
diff --git a/ext/fileinfo/libmagic/ascmagic.c b/ext/fileinfo/libmagic/ascmagic.c
index 2090097..c0041df 100644
--- a/ext/fileinfo/libmagic/ascmagic.c
+++ b/ext/fileinfo/libmagic/ascmagic.c
@@ -147,7 +147,7 @@ file_ascmagic_with_encoding(struct magic_set *ms, const unsigned char *buf,
== NULL)
goto done;
if ((rv = file_softmagic(ms, utf8_buf,
- (size_t)(utf8_end - utf8_buf), TEXTTEST, text)) == 0)
+ (size_t)(utf8_end - utf8_buf), 0, TEXTTEST, text)) == 0)
rv = -1;
}
diff --git a/ext/fileinfo/libmagic/file.h b/ext/fileinfo/libmagic/file.h
index 19b6872..ab5082d 100644
--- a/ext/fileinfo/libmagic/file.h
+++ b/ext/fileinfo/libmagic/file.h
@@ -437,7 +437,7 @@ protected int file_encoding(struct magic_set *, const unsigned char *, size_t,
unichar **, size_t *, const char **, const char **, const char **);
protected int file_is_tar(struct magic_set *, const unsigned char *, size_t);
protected int file_softmagic(struct magic_set *, const unsigned char *, size_t,
- int, int);
+ size_t, int, int);
protected int file_apprentice(struct magic_set *, const char *, int);
protected int file_magicfind(struct magic_set *, const char *, struct mlist *);
protected uint64_t file_signextend(struct magic_set *, struct magic *,
diff --git a/ext/fileinfo/libmagic/funcs.c b/ext/fileinfo/libmagic/funcs.c
index 9c0d2bd..011ca42 100644
--- a/ext/fileinfo/libmagic/funcs.c
+++ b/ext/fileinfo/libmagic/funcs.c
@@ -235,7 +235,7 @@ file_buffer(struct magic_set *ms, php_stream *stream, const char *inname, const
/* try soft magic tests */
if ((ms->flags & MAGIC_NO_CHECK_SOFT) == 0)
- if ((m = file_softmagic(ms, ubuf, nb, BINTEST,
+ if ((m = file_softmagic(ms, ubuf, nb, 0, BINTEST,
looks_text)) != 0) {
if ((ms->flags & MAGIC_DEBUG) != 0)
(void)fprintf(stderr, "softmagic %d\n", m);
diff --git a/ext/fileinfo/libmagic/softmagic.c b/ext/fileinfo/libmagic/softmagic.c
index 0671fa9..7c5f628 100644
--- a/ext/fileinfo/libmagic/softmagic.c
+++ b/ext/fileinfo/libmagic/softmagic.c
@@ -74,13 +74,13 @@ private void cvt_64(union VALUETYPE *, const struct magic *);
/*ARGSUSED1*/ /* nbytes passed for regularity, maybe need later */
protected int
file_softmagic(struct magic_set *ms, const unsigned char *buf, size_t nbytes,
- int mode, int text)
+ size_t level, int mode, int text)
{
struct mlist *ml;
int rv, printed_something = 0, need_separator = 0;
for (ml = ms->mlist[0]->next; ml != ms->mlist[0]; ml = ml->next)
if ((rv = match(ms, ml->magic, ml->nmagic, buf, nbytes, 0, mode,
- text, 0, 0, &printed_something, &need_separator,
+ text, 0, level, &printed_something, &need_separator,
NULL)) != 0)
return rv;
@@ -1680,6 +1680,8 @@ mget(struct magic_set *ms, const unsigned char *s, struct magic *m,
break;
case FILE_INDIRECT:
+ if (offset == 0)
+ return 0;
if (nbytes < offset)
return 0;
sbuf = ms->o.buf;
@@ -1687,7 +1689,7 @@ mget(struct magic_set *ms, const unsigned char *s, struct magic *m,
ms->o.buf = NULL;
ms->offset = 0;
rv = file_softmagic(ms, s + offset, nbytes - offset,
- BINTEST, text);
+ recursion_level, BINTEST, text);
if ((ms->flags & MAGIC_DEBUG) != 0)
fprintf(stderr, "indirect @offs=%u[%d]\n", offset, rv);
rbuf = ms->o.buf;
diff --git a/ext/fileinfo/tests/cve-2014-1943.phpt b/ext/fileinfo/tests/cve-2014-1943.phpt
new file mode 100644
index 0000000..b2e9c17
--- /dev/null
+++ b/ext/fileinfo/tests/cve-2014-1943.phpt
@@ -0,0 +1,39 @@
+--TEST--
+Bug #66731: file: infinite recursion
+--SKIPIF--
+<?php
+if (!class_exists('finfo'))
+ die('skip no fileinfo extension');
+--FILE--
+<?php
+$fd = __DIR__.'/cve-2014-1943.data';
+$fm = __DIR__.'/cve-2014-1943.magic';
+
+$a = "\105\122\000\000\000\000\000";
+$b = str_repeat("\001", 250000);
+$m = "0 byte x\n".
+ ">(1.b) indirect x\n";
+
+file_put_contents($fd, $a);
+$fi = finfo_open(FILEINFO_NONE);
+var_dump(finfo_file($fi, $fd));
+finfo_close($fi);
+
+file_put_contents($fd, $b);
+file_put_contents($fm, $m);
+$fi = finfo_open(FILEINFO_NONE, $fm);
+var_dump(finfo_file($fi, $fd));
+finfo_close($fi);
+?>
+Done
+--CLEAN--
+<?php
+@unlink(__DIR__.'/cve-2014-1943.data');
+@unlink(__DIR__.'/cve-2014-1943.magic');
+?>
+--EXPECTF--
+string(%d) "%s"
+
+Warning: finfo_file(): Failed identify data 0:(null) in %s on line %d
+bool(false)
+Done
--
1.8.4.3
From bd8cd98d6d70ac50dc1de350970ed9ea479895db Mon Sep 17 00:00:00 2001
From: Remi Collet <remi@php.net>
Date: Tue, 18 Feb 2014 13:57:53 +0100
Subject: [PATCH] Set fileinfo version to 1.0.5 (as in php 5.4, no diff)
---
ext/fileinfo/php_fileinfo.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/ext/fileinfo/php_fileinfo.h b/ext/fileinfo/php_fileinfo.h
index d8dec12..354ec7b 100644
--- a/ext/fileinfo/php_fileinfo.h
+++ b/ext/fileinfo/php_fileinfo.h
@@ -24,7 +24,7 @@
extern zend_module_entry fileinfo_module_entry;
#define phpext_fileinfo_ptr &fileinfo_module_entry
-#define PHP_FILEINFO_VERSION "1.0.5-dev"
+#define PHP_FILEINFO_VERSION "1.0.5"
#ifdef PHP_WIN32
#define PHP_FILEINFO_API __declspec(dllexport)
--
1.8.4.3
|
