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
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
|
/* test 11 */
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>
#define ITERATIONS 10
int max_error = 1;
#include "common.h"
int errct, subtest;
char *envp[3] = {"spring", "summer", 0};
char *passwd_file = "/etc/passwd";
int main(int argc, char *argv[]);
void test11a(void);
void test11b(void);
void test11c(void);
void test11d(void);
int main(argc, argv)
int argc;
char *argv[];
{
int i, m = 0xFFFF;
if (argc == 2) m = atoi(argv[1]);
start(11);
system("cp ../t11a .");
system("cp ../t11b .");
if (geteuid() != 0) {
printf("must be setuid root; test aborted\n");
exit(1);
}
if (getuid() == 0) {
printf("must be setuid root logged in as someone else; test aborted\n");
exit(1);
}
for (i = 0; i < ITERATIONS; i++) {
if (m & 0001) test11a();
if (m & 0002) test11b();
if (m & 0004) test11c();
if (m & 0010) test11d();
}
quit();
return(-1);
}
void test11a()
{
/* Test exec */
int n, fd;
char aa[4];
subtest = 1;
if (fork()) {
wait(&n);
if (n != 25600) e(1);
unlink("t1");
unlink("t2");
} else {
if (chown("t11a", 10, 20) < 0) e(2);
chmod("t11a", 0666);
/* The following call should fail because the mode has no X
* bits on. If a bug lets it unexpectedly succeed, the child
* will print an error message since the arguments are wrong.
*/
execl("t11a", "t11a", (char *) 0); /* should fail -- no X bits */
/* Control should come here after the failed execl(). */
chmod("t11a", 06555);
if ((fd = creat("t1", 0600)) != 3) e(3);
if (close(fd) < 0) e(4);
if (open("t1", O_RDWR) != 3) e(5);
if (chown("t1", 10, 99) < 0) e(6);
if ((fd = creat("t2", 0060)) != 4) e(7);
if (close(fd) < 0) e(8);
if (open("t2", O_RDWR) != 4) e(9);
if (chown("t2", 99, 20) < 0) e(10);
if (setgid(6) < 0) e(11);
if (setuid(5) < 0) e(12);
if (getuid() != 5) e(13);
if (geteuid() != 5) e(14);
if (getgid() != 6) e(15);
if (getegid() != 6) e(16);
aa[0] = 3;
aa[1] = 5;
aa[2] = 7;
aa[3] = 9;
if (write(3, aa, 4) != 4) e(17);
lseek(3, 2L, 0);
execle("t11a", "t11a", "arg0", "arg1", "arg2", (char *) 0, envp);
e(18);
printf("Can't exec t11a\n");
exit(3);
}
}
void test11b()
{
int n;
char *argv[5];
subtest = 2;
if (fork()) {
wait(&n);
if (n != (75 << 8)) e(20);
} else {
/* Child tests execv. */
argv[0] = "t11b";
argv[1] = "abc";
argv[2] = "defghi";
argv[3] = "j";
argv[4] = 0;
execv("t11b", argv);
e(19);
}
}
void test11c()
{
/* Test getlogin(). This test MUST run setuid root. */
int n, etc_uid;
uid_t ruid, euid;
char *lnamep, *p;
#define MAXLINELEN 200
char array[MAXLINELEN], save[L_cuserid];
FILE *stream;
subtest = 3;
errno = -2000; /* None of these calls set errno. */
save[0] = '#';
save[1] = '0';
ruid = getuid();
euid = geteuid();
lnamep = getlogin();
strcpy(save, lnamep);
/* Because we are setuid, login != 'root' */
if (euid != 0) e(1);
if (ruid == 0) e(2);
if ( (n = strlen(save)) == 0) e(5);
/* Check login against passwd file. First lookup login in /etc/passwd. */
if (n == 0) return; /* if login not found, don't look it up */
if ( (stream = fopen(passwd_file, "r")) == NULL) e(8);
while (fgets(array, sizeof(array), stream) != NULL) {
if (strncmp(array, save, n) == 0) {
p = &array[0]; /* hunt for uid */
while (*p != ':') p++;
p++;
while (*p != ':') p++;
p++; /* p now points to uid */
etc_uid = atoi(p);
if (etc_uid != ruid) e(9);
break; /* 1 entry per login please */
}
}
fclose(stream);
}
void test11d()
{
int fd;
struct stat statbuf;
subtest = 4;
fd = creat("T11.1", 0750);
if (fd < 0) e(1);
if (chown("T11.1", 8, 1) != 0) e(2);
if (chmod("T11.1", 0666) != 0) e(3);
if (stat("T11.1", &statbuf) != 0) e(4);
if ((statbuf.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO)) != 0666) e(5);
if (close(fd) != 0) e(6);
if (unlink("T11.1") != 0) e(7);
}
|
