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epee: fix array underflow in unicode parsing 

Reported by minerscan

Also independently found by OSS-Fuzz just recently
This commit is contained in:
moneromooo-monero 2020-04-23 14:39:54 +00:00
parent 93257997bd
commit 3721d5688f
1 changed files with 1 additions and 1 deletions
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2
contrib/epee/include/storages/parserse_base_utils.h
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@ -196,7 +196,7 @@ namespace misc_utils
uint32_t dst = 0; uint32_t dst = 0;
for (int i = 0; i < 4; ++i) for (int i = 0; i < 4; ++i)
{ {
const unsigned char tmp = isx[(int)*++it]; const unsigned char tmp = isx[(unsigned char)*++it];
CHECK_AND_ASSERT_THROW_MES(tmp != 0xff, "Bad Unicode encoding"); CHECK_AND_ASSERT_THROW_MES(tmp != 0xff, "Bad Unicode encoding");
dst = dst << 4 | tmp; dst = dst << 4 | tmp;
} }