ba8868f58a
It was meant to write to q instead of t
FAIL: test-id128
================
=================================================================
==125770==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7ffd4615bd31 at pc 0x7a2f41b1bf33 bp 0x7ffd4615b750 sp 0x7ffd4615b748
WRITE of size 1 at 0x7ffd4615bd31 thread T0
#0 0x7a2f41b1bf32 in id128_to_uuid_string src/libsystemd/sd-id128/id128-util.c:42
#1 0x401f73 in main src/test/test-id128.c:147
#2 0x7a2f41336341 in __libc_start_main (/lib64/libc.so.6+0x20341)
#3 0x401129 in _start (/home/crrodriguez/scm/systemd/.libs/test-id128+0x401129)
Address 0x7ffd4615bd31 is located in stack of thread T0 at offset 1409 in frame
#0 0x401205 in main src/test/test-id128.c:37
This frame has 23 object(s):
[32, 40) 'b'
[96, 112) 'id'
[160, 176) 'id2'
[224, 240) 'a'
[288, 304) 'b'
[352, 368) 'a'
[416, 432) 'b'
[480, 496) 'a'
[544, 560) 'b'
[608, 624) 'a'
[672, 688) 'b'
[736, 752) 'a'
[800, 816) 'b'
[864, 880) 'a'
[928, 944) 'b'
[992, 1008) 'a'
[1056, 1072) 'b'
[1120, 1136) 'a'
[1184, 1200) 'b'
[1248, 1264) 'a'
[1312, 1328) 'b'
[1376, 1409) 't' <== Memory access at offset 1409 overflows this variable
[1472, 1509) 'q'
HINT: this may be a false positive if your program uses some custom stack unwind mechanism or swapcontext
(longjmp and C++ exceptions *are* supported)
SUMMARY: AddressSanitizer: stack-buffer-overflow src/libsystemd/sd-id128/id128-util.c:42 in id128_to_uuid_string
Shadow bytes around the buggy address:
0x100028c23750: f2 f2 00 00 f4 f4 f2 f2 f2 f2 00 00 f4 f4 f2 f2
0x100028c23760: f2 f2 00 00 f4 f4 f2 f2 f2 f2 00 00 f4 f4 f2 f2
0x100028c23770: f2 f2 00 00 f4 f4 f2 f2 f2 f2 00 00 f4 f4 f2 f2
0x100028c23780: f2 f2 00 00 f4 f4 f2 f2 f2 f2 00 00 f4 f4 f2 f2
0x100028c23790: f2 f2 00 00 f4 f4 f2 f2 f2 f2 00 00 f4 f4 f2 f2
=>0x100028c237a0: f2 f2 00 00 00 00[01]f4 f4 f4 f2 f2 f2 f2 00 00
0x100028c237b0: 00 00 05 f4 f4 f4 00 00 00 00 00 00 00 00 00 00
0x100028c237c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x100028c237d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x100028c237e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x100028c237f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Heap right redzone: fb
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack partial redzone: f4
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
==125770==ABORTING
FAIL test-id128 (exit status: 1)
158 lines
5.8 KiB
C
158 lines
5.8 KiB
C
/***
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This file is part of systemd.
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Copyright 2011 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <string.h>
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#include "sd-daemon.h"
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#include "sd-id128.h"
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#include "alloc-util.h"
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#include "fd-util.h"
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#include "fileio.h"
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#include "id128-util.h"
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#include "macro.h"
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#include "string-util.h"
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#include "util.h"
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#define ID128_WALDI SD_ID128_MAKE(01, 02, 03, 04, 05, 06, 07, 08, 09, 0a, 0b, 0c, 0d, 0e, 0f, 10)
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#define STR_WALDI "0102030405060708090a0b0c0d0e0f10"
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#define UUID_WALDI "01020304-0506-0708-090a-0b0c0d0e0f10"
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int main(int argc, char *argv[]) {
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sd_id128_t id, id2;
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char t[33], q[37];
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_cleanup_free_ char *b = NULL;
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_cleanup_close_ int fd = -1;
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assert_se(sd_id128_randomize(&id) == 0);
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printf("random: %s\n", sd_id128_to_string(id, t));
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assert_se(sd_id128_from_string(t, &id2) == 0);
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assert_se(sd_id128_equal(id, id2));
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if (sd_booted() > 0) {
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assert_se(sd_id128_get_machine(&id) == 0);
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printf("machine: %s\n", sd_id128_to_string(id, t));
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assert_se(sd_id128_get_boot(&id) == 0);
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printf("boot: %s\n", sd_id128_to_string(id, t));
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}
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printf("waldi: %s\n", sd_id128_to_string(ID128_WALDI, t));
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assert_se(streq(t, STR_WALDI));
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assert_se(asprintf(&b, SD_ID128_FORMAT_STR, SD_ID128_FORMAT_VAL(ID128_WALDI)) == 32);
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printf("waldi2: %s\n", b);
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assert_se(streq(t, b));
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printf("waldi3: %s\n", id128_to_uuid_string(ID128_WALDI, q));
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assert_se(streq(q, UUID_WALDI));
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b = mfree(b);
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assert_se(asprintf(&b, ID128_UUID_FORMAT_STR, SD_ID128_FORMAT_VAL(ID128_WALDI)) == 36);
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printf("waldi4: %s\n", b);
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assert_se(streq(q, b));
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assert_se(sd_id128_from_string(STR_WALDI, &id) >= 0);
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assert_se(sd_id128_equal(id, ID128_WALDI));
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assert_se(sd_id128_from_string(UUID_WALDI, &id) >= 0);
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assert_se(sd_id128_equal(id, ID128_WALDI));
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assert_se(sd_id128_from_string("", &id) < 0);
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assert_se(sd_id128_from_string("01020304-0506-0708-090a-0b0c0d0e0f101", &id) < 0);
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assert_se(sd_id128_from_string("01020304-0506-0708-090a-0b0c0d0e0f10-", &id) < 0);
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assert_se(sd_id128_from_string("01020304-0506-0708-090a0b0c0d0e0f10", &id) < 0);
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assert_se(sd_id128_from_string("010203040506-0708-090a-0b0c0d0e0f10", &id) < 0);
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assert_se(id128_is_valid(STR_WALDI));
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assert_se(id128_is_valid(UUID_WALDI));
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assert_se(!id128_is_valid(""));
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assert_se(!id128_is_valid("01020304-0506-0708-090a-0b0c0d0e0f101"));
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assert_se(!id128_is_valid("01020304-0506-0708-090a-0b0c0d0e0f10-"));
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assert_se(!id128_is_valid("01020304-0506-0708-090a0b0c0d0e0f10"));
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assert_se(!id128_is_valid("010203040506-0708-090a-0b0c0d0e0f10"));
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fd = open_tmpfile_unlinkable(NULL, O_RDWR|O_CLOEXEC);
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assert_se(fd >= 0);
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/* First, write as UUID */
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assert_se(sd_id128_randomize(&id) >= 0);
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assert_se(id128_write_fd(fd, ID128_UUID, id, false) >= 0);
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assert_se(lseek(fd, 0, SEEK_SET) == 0);
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assert_se(id128_read_fd(fd, ID128_PLAIN, &id2) == -EINVAL);
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assert_se(lseek(fd, 0, SEEK_SET) == 0);
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assert_se(id128_read_fd(fd, ID128_UUID, &id2) >= 0);
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assert_se(sd_id128_equal(id, id2));
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assert_se(lseek(fd, 0, SEEK_SET) == 0);
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assert_se(id128_read_fd(fd, ID128_ANY, &id2) >= 0);
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assert_se(sd_id128_equal(id, id2));
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/* Second, write as plain */
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assert_se(lseek(fd, 0, SEEK_SET) == 0);
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assert_se(ftruncate(fd, 0) >= 0);
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assert_se(sd_id128_randomize(&id) >= 0);
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assert_se(id128_write_fd(fd, ID128_PLAIN, id, false) >= 0);
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assert_se(lseek(fd, 0, SEEK_SET) == 0);
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assert_se(id128_read_fd(fd, ID128_UUID, &id2) == -EINVAL);
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assert_se(lseek(fd, 0, SEEK_SET) == 0);
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assert_se(id128_read_fd(fd, ID128_PLAIN, &id2) >= 0);
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assert_se(sd_id128_equal(id, id2));
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assert_se(lseek(fd, 0, SEEK_SET) == 0);
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assert_se(id128_read_fd(fd, ID128_ANY, &id2) >= 0);
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assert_se(sd_id128_equal(id, id2));
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/* Third, write plain without trailing newline */
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assert_se(lseek(fd, 0, SEEK_SET) == 0);
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assert_se(ftruncate(fd, 0) >= 0);
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assert_se(sd_id128_randomize(&id) >= 0);
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assert_se(write(fd, sd_id128_to_string(id, t), 32) == 32);
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assert_se(lseek(fd, 0, SEEK_SET) == 0);
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assert_se(id128_read_fd(fd, ID128_UUID, &id2) == -EINVAL);
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assert_se(lseek(fd, 0, SEEK_SET) == 0);
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assert_se(id128_read_fd(fd, ID128_PLAIN, &id2) >= 0);
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assert_se(sd_id128_equal(id, id2));
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/* Third, write UUID without trailing newline */
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assert_se(lseek(fd, 0, SEEK_SET) == 0);
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assert_se(ftruncate(fd, 0) >= 0);
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assert_se(sd_id128_randomize(&id) >= 0);
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assert_se(write(fd, id128_to_uuid_string(id, q), 36) == 36);
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assert_se(lseek(fd, 0, SEEK_SET) == 0);
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assert_se(id128_read_fd(fd, ID128_PLAIN, &id2) == -EINVAL);
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assert_se(lseek(fd, 0, SEEK_SET) == 0);
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assert_se(id128_read_fd(fd, ID128_UUID, &id2) >= 0);
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assert_se(sd_id128_equal(id, id2));
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return 0;
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}
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