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#181 OSS-Fuzz UPC/EAN fix, allow max 6 chars add-on in ean_leading_zeroes()

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gitlost 2020-03-26 09:35:04 +00:00
parent bee8794cda
commit 62995f18d2
3 changed files with 63 additions and 4 deletions
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6
backend/upcean.c
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@ -594,6 +594,9 @@ INTERNAL void ean_leading_zeroes(struct zint_symbol *symbol, unsigned char sourc
first_part[i + 1] = '\0';
}
if (second_len >= 6) { /* Allow 6 (actual max 5) so as to trigger too long error */
second_len = 6;
}
for (i = 0; i < second_len; i++) {
second_part[i] = source[i + first_len + 1];
second_part[i + 1] = '\0';
@ -695,12 +698,11 @@ INTERNAL void ean_leading_zeroes(struct zint_symbol *symbol, unsigned char sourc
/* splits string to parts before and after '+' parts */
INTERNAL int eanx(struct zint_symbol *symbol, unsigned char source[], int src_len) {
unsigned char first_part[20] = {0}, second_part[20] = {0}, dest[1000] = {0};
unsigned char first_part[20] = {0}, second_part[7] = {0}, dest[1000] = {0};
unsigned char local_source[20] = {0};
unsigned int latch, reader, writer, with_addon;
int error_number, i, plus_count;
with_addon = FALSE;
latch = FALSE;
writer = 0;