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Specify the maximum SizeOfOptionalHeader value

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olszomal 2023-02-07 14:29:43 +01:00 committed by Michał Trojnara
parent 33c1fdaa85
commit 41e6042c26
1 changed files with 4 additions and 3 deletions
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osslsigncode.c
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@ -1625,10 +1625,11 @@ static u_char *pe_calc_page_hash(char *indata, uint32_t header_size,
printf("Corrupted headers size: 0x%08X\n", hdrsize); printf("Corrupted headers size: 0x%08X\n", hdrsize);
return NULL; /* FAILED */ return NULL; /* FAILED */
} }
/* SizeOfOptionalHeader is she size of the optional header, which is /* SizeOfOptionalHeader is the size of the optional header, which is
* required for executable files, but for object files should be zero. */ * required for executable files, but for object files should be zero,
* and can't be bigger than the file */
opthdr_size = GET_UINT16_LE(indata + header_size + 20); opthdr_size = GET_UINT16_LE(indata + header_size + 20);
if (opthdr_size == 0 || opthdr_size > UINT16_MAX) { if (opthdr_size == 0 || opthdr_size > sigpos) {
printf("Corrupted optional header size: 0x%08X\n", opthdr_size); printf("Corrupted optional header size: 0x%08X\n", opthdr_size);
return NULL; /* FAILED */ return NULL; /* FAILED */
} }