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- Inceased maximum size of ASN1 length reads to 32-bits

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This commit is contained in:
Paul Bakker
2011-10-12 09:52:22 +00:00
parent b892b1326c
commit c4909d95f1
2 changed files with 17 additions and 0 deletions
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16
library/x509parse.c
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@ -89,6 +89,22 @@ static int asn1_get_len( unsigned char **p,
(*p) += 3;
break;
case 3:
if( ( end - *p ) < 4 )
return( POLARSSL_ERR_ASN1_OUT_OF_DATA );
*len = ( (*p)[1] << 16 ) | ( (*p)[2] << 8 ) | (*p)[3];
(*p) += 4;
break;
case 4:
if( ( end - *p ) < 5 )
return( POLARSSL_ERR_ASN1_OUT_OF_DATA );
*len = ( (*p)[1] << 24 ) | ( (*p)[2] << 16 ) | ( (*p)[3] << 8 ) | (*p)[4];
(*p) += 5;
break;
default:
return( POLARSSL_ERR_ASN1_INVALID_LENGTH );
}