41 lines
1.1 KiB
Diff
41 lines
1.1 KiB
Diff
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From c3797d40a1c57352192c6106cc0f435e7d9c11e8 Mon Sep 17 00:00:00 2001
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From: Denys Vlasenko <vda.linux@googlemail.com>
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Date: Tue, 7 Nov 2017 18:09:29 +0100
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Subject: lineedit: do not tab-complete any strings which have control
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characters
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function old new delta
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add_match 41 68 +27
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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---
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libbb/lineedit.c | 12 ++++++++++++
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1 file changed, 12 insertions(+)
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diff --git a/libbb/lineedit.c b/libbb/lineedit.c
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index c0e35bb..56e8140 100644
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--- a/libbb/lineedit.c
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+++ b/libbb/lineedit.c
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@@ -645,6 +645,18 @@ static void free_tab_completion_data(void)
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static void add_match(char *matched)
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{
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+ unsigned char *p = (unsigned char*)matched;
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+ while (*p) {
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+ /* ESC attack fix: drop any string with control chars */
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+ if (*p < ' '
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+ || (!ENABLE_UNICODE_SUPPORT && *p >= 0x7f)
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+ || (ENABLE_UNICODE_SUPPORT && *p == 0x7f)
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+ ) {
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+ free(matched);
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+ return;
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+ }
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+ p++;
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+ }
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matches = xrealloc_vector(matches, 4, num_matches);
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matches[num_matches] = matched;
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num_matches++;
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--
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cgit v0.12
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