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Add a length check in rsa_get_pubkey()

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Manuel Pégourié-Gonnard 2013-08-15 13:58:01 +02:00 committed by Paul Bakker
parent 56a487a17f
commit c13c0d4524
1 changed files with 4 additions and 0 deletions
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4
library/x509parse.c
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@ -518,6 +518,10 @@ static int x509_get_rsapubkey( unsigned char **p,
( ret = asn1_get_mpi( p, end, &rsa->E ) ) != 0 ) ( ret = asn1_get_mpi( p, end, &rsa->E ) ) != 0 )
return( POLARSSL_ERR_X509_CERT_INVALID_PUBKEY + ret ); return( POLARSSL_ERR_X509_CERT_INVALID_PUBKEY + ret );
if( *p != end )
return( POLARSSL_ERR_X509_CERT_INVALID_PUBKEY +
POLARSSL_ERR_ASN1_LENGTH_MISMATCH );
if( ( ret = rsa_check_pubkey( rsa ) ) != 0 ) if( ( ret = rsa_check_pubkey( rsa ) ) != 0 )
return( ret ); return( ret );