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Range check encrypted string length (Issue #52)

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Michael R Sweet
2023-11-18 18:22:11 -05:00
parent 9fec2195d0
commit 0258384d53
3 changed files with 18 additions and 2 deletions
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5
pdfio-value.c
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@ -383,7 +383,10 @@ _pdfioValueRead(pdfio_file_t *pdf, // I - PDF file
return (false);
}
cb = _pdfioCryptoMakeReader(pdf, obj, &ctx, v->value.binary.data, &ivlen);
ivlen = v->value.binary.datalen;
if ((cb = _pdfioCryptoMakeReader(pdf, obj, &ctx, v->value.binary.data, &ivlen)) == NULL)
return (false);
templen = (cb)(&ctx, temp, v->value.binary.data + ivlen, v->value.binary.datalen - ivlen);
// Copy the decrypted string back to the value and adjust the length...