0003-fix-CVE-2015-1419.patch
3.25 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
Fix CVE-2015-1419 - config option deny_file is not handled correctly.
From SUSE: https://bugzilla.suse.com/show_bug.cgi?id=915522
Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Index: vsftpd-3.0.2/ls.c
===================================================================
--- vsftpd-3.0.2.orig/ls.c
+++ vsftpd-3.0.2/ls.c
@@ -7,6 +7,7 @@
* Would you believe, code to handle directory listing.
*/
+#include <stdlib.h>
#include "ls.h"
#include "access.h"
#include "defs.h"
@@ -243,11 +244,42 @@ vsf_filename_passes_filter(const struct
struct mystr temp_str = INIT_MYSTR;
struct mystr brace_list_str = INIT_MYSTR;
struct mystr new_filter_str = INIT_MYSTR;
+ struct mystr normalize_filename_str = INIT_MYSTR;
+ const char *normname;
+ const char *path;
int ret = 0;
char last_token = 0;
int must_match_at_current_pos = 1;
+
str_copy(&filter_remain_str, p_filter_str);
- str_copy(&name_remain_str, p_filename_str);
+
+ /* normalize filepath */
+ path = str_strdup(p_filename_str);
+ normname = realpath(path, NULL);
+ if (normname == NULL)
+ goto out;
+ str_alloc_text(&normalize_filename_str, normname);
+
+ if (!str_isempty (&filter_remain_str) && !str_isempty(&normalize_filename_str)) {
+ if (str_get_char_at(p_filter_str, 0) == '/') {
+ if (str_get_char_at(&normalize_filename_str, 0) != '/') {
+ str_getcwd (&name_remain_str);
+
+ if (str_getlen(&name_remain_str) > 1) /* cwd != root dir */
+ str_append_char (&name_remain_str, '/');
+
+ str_append_str (&name_remain_str, &normalize_filename_str);
+ }
+ else
+ str_copy (&name_remain_str, &normalize_filename_str);
+ } else {
+ if (str_get_char_at(p_filter_str, 0) != '{')
+ str_basename (&name_remain_str, &normalize_filename_str);
+ else
+ str_copy (&name_remain_str, &normalize_filename_str);
+ }
+ } else
+ str_copy(&name_remain_str, &normalize_filename_str);
while (!str_isempty(&filter_remain_str) && *iters < VSFTP_MATCHITERS_MAX)
{
@@ -360,6 +392,9 @@ vsf_filename_passes_filter(const struct
ret = 0;
}
out:
+ free(normname);
+ free(path);
+ str_free(&normalize_filename_str);
str_free(&filter_remain_str);
str_free(&name_remain_str);
str_free(&temp_str);
Index: vsftpd-3.0.2/str.c
===================================================================
--- vsftpd-3.0.2.orig/str.c
+++ vsftpd-3.0.2/str.c
@@ -770,3 +770,14 @@ str_replace_unprintable(struct mystr* p_
}
}
+void
+str_basename (struct mystr* d_str, const struct mystr* path)
+{
+ static struct mystr tmp;
+
+ str_copy (&tmp, path);
+ str_split_char_reverse(&tmp, d_str, '/');
+
+ if (str_isempty(d_str))
+ str_copy (d_str, path);
+}
Index: vsftpd-3.0.2/str.h
===================================================================
--- vsftpd-3.0.2.orig/str.h
+++ vsftpd-3.0.2/str.h
@@ -101,6 +101,7 @@ void str_replace_unprintable(struct myst
int str_atoi(const struct mystr* p_str);
filesize_t str_a_to_filesize_t(const struct mystr* p_str);
unsigned int str_octal_to_uint(const struct mystr* p_str);
+void str_basename (struct mystr* d_str, const struct mystr* path);
/* PURPOSE: Extract a line of text (delimited by \n or EOF) from a string
* buffer, starting at character position 'p_pos'. The extracted line will