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@ -1,34 +0,0 @@ |
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From 8eb1367ca44e772963e704a700ef72ae2e12babd Mon Sep 17 00:00:00 2001 |
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From: Nicolas Williams <nico@cryptonector.com> |
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Date: Sat, 24 Oct 2015 17:24:57 -0500 |
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Subject: [PATCH] Heap buffer overflow in tokenadd() (fix #105) |
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This was an off-by one: the NUL terminator byte was not allocated on |
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resize. This was triggered by JSON-encoded numbers longer than 256 |
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bytes. |
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---
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src/jv_parse.c | 4 ++-- |
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1 file changed, 2 insertions(+), 2 deletions(-) |
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diff --git a/src/jv_parse.c b/src/jv_parse.c
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index 3102ed4..84245b8 100644
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--- src/jv_parse.c
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+++ src/jv_parse.c
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@@ -383,7 +383,7 @@ static pfunc stream_token(struct jv_parser* p, char ch) {
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static void tokenadd(struct jv_parser* p, char c) { |
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assert(p->tokenpos <= p->tokenlen); |
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- if (p->tokenpos == p->tokenlen) {
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+ if (p->tokenpos >= (p->tokenlen - 1)) {
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p->tokenlen = p->tokenlen*2 + 256; |
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p->tokenbuf = jv_mem_realloc(p->tokenbuf, p->tokenlen); |
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} |
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@@ -485,7 +485,7 @@ static pfunc check_literal(struct jv_parser* p) {
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TRY(value(p, v)); |
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} else { |
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// FIXME: better parser |
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- p->tokenbuf[p->tokenpos] = 0; // FIXME: invalid
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+ p->tokenbuf[p->tokenpos] = 0;
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char* end = 0; |
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double d = jvp_strtod(&p->dtoa, p->tokenbuf, &end); |
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if (end == 0 || *end != 0) |