diff options
| -rw-r--r-- | libbb/lineedit.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/libbb/lineedit.c b/libbb/lineedit.c index c0e35bb21..56e81404e 100644 --- a/libbb/lineedit.c +++ b/libbb/lineedit.c @@ -645,6 +645,18 @@ static void free_tab_completion_data(void) static void add_match(char *matched) { + unsigned char *p = (unsigned char*)matched; + while (*p) { + /* ESC attack fix: drop any string with control chars */ + if (*p < ' ' + || (!ENABLE_UNICODE_SUPPORT && *p >= 0x7f) + || (ENABLE_UNICODE_SUPPORT && *p == 0x7f) + ) { + free(matched); + return; + } + p++; + } matches = xrealloc_vector(matches, 4, num_matches); matches[num_matches] = matched; num_matches++; |