AuroraMiddleware/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2024-11-09 23:00:07 +00:00
Code Issues Packages Projects Releases Wiki Activity

Fix BZ #18043 (c4): buffer-overflow (read past the end) in wordexp/parse_dollars/parse_param

Browse Source
This commit is contained in:
Paul Pluzhnikov 2015-03-09 07:22:36 -07:00
parent 95f386609f
commit 5f85a4bf94
3 changed files with 11 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
ChangeLog
View File

@ -1,3 +1,9 @@
2015-03-09 Paul Pluzhnikov <ppluzhnikov@google.com>
[BZ #18043]
* posix/wordexp.c (parse_param): Fix buffer overflow.
* posix/wordexp-test.c (test_case): Add test case.
2015-03-09 Paul Pluzhnikov <ppluzhnikov@google.com> 2015-03-09 Paul Pluzhnikov <ppluzhnikov@google.com>
[BZ #18042] [BZ #18042]

5
posix/wordexp-test.c
View File

@ -234,8 +234,9 @@ struct test_case_struct
{ WRDE_CMDSUB, NULL, "$((1+`echo 1`))", WRDE_NOCMD, 0, { NULL, }, IFS }, { WRDE_CMDSUB, NULL, "$((1+`echo 1`))", WRDE_NOCMD, 0, { NULL, }, IFS },
{ WRDE_CMDSUB, NULL, "$((1+$((`echo 1`))))", WRDE_NOCMD, 0, { NULL, }, IFS }, { WRDE_CMDSUB, NULL, "$((1+$((`echo 1`))))", WRDE_NOCMD, 0, { NULL, }, IFS },
{ WRDE_SYNTAX, NULL, "`\\", 0, 0, { NULL, }, IFS }, /* BZ 18042 */ { WRDE_SYNTAX, NULL, "`\\", 0, 0, { NULL, }, IFS }, /* BZ 18042 */
{ WRDE_SYNTAX, NULL, "${", 0, 0, { NULL, }, IFS }, /* BZ 18043 */ { WRDE_SYNTAX, NULL, "${", 0, 0, { NULL, }, IFS }, /* BZ 18043 */
{ WRDE_SYNTAX, NULL, "L${a:", 0, 0, { NULL, }, IFS }, /* BZ 18043#c4 */
{ -1, NULL, NULL, 0, 0, { NULL, }, IFS }, { -1, NULL, NULL, 0, 0, { NULL, }, IFS },
}; };

3
posix/wordexp.c
View File

@ -1343,7 +1343,8 @@ parse_param (char **word, size_t *word_length, size_t *max_length,
break; break;
case ':': case ':':
if (strchr ("-=?+", words[1 + *offset]) == NULL) if (words[1 + *offset] == '\0'
|| strchr ("-=?+", words[1 + *offset]) == NULL)
goto syntax; goto syntax;
colon_seen = 1; colon_seen = 1;