Make sure not to read beyond end of buffer

diff --git a/crypto/asn1/t_x509.c b/crypto/asn1/t_x509.c
index 1bb8e82d63fb5361bf41091e8cd3d1689a3ddfcb..7d22e1c0ce2a4890930f0d42fce569a5d66fefdb 100644 (file)
--- a/crypto/asn1/t_x509.c
+++ b/crypto/asn1/t_x509.c
@@ -370,12 +370,13 @@ int ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm)
        d= (v[6]-'0')*10+(v[7]-'0');
        h= (v[8]-'0')*10+(v[9]-'0');
        m=  (v[10]-'0')*10+(v[11]-'0');
-       if (    (v[12] >= '0') && (v[12] <= '9') &&
-               (v[13] >= '0') && (v[13] <= '9'))
+       if (i >= 14 &&
+           (v[12] >= '0') && (v[12] <= '9') &&
+           (v[13] >= '0') && (v[13] <= '9'))
                {
                s=  (v[12]-'0')*10+(v[13]-'0');
                /* Check for fractions of seconds. */
-               if (v[14] == '.')
+               if (i >= 15 && v[14] == '.')
                        {
                        int l = tm->length;
                        f = &v[14];     /* The decimal point. */
@@ -416,8 +417,9 @@ int ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm)
        d= (v[4]-'0')*10+(v[5]-'0');
        h= (v[6]-'0')*10+(v[7]-'0');
        m=  (v[8]-'0')*10+(v[9]-'0');
-       if (    (v[10] >= '0') && (v[10] <= '9') &&
-               (v[11] >= '0') && (v[11] <= '9'))
+       if (i >=12 &&
+           (v[10] >= '0') && (v[10] <= '9') &&
+           (v[11] >= '0') && (v[11] <= '9'))
                s=  (v[10]-'0')*10+(v[11]-'0');
 
        if (BIO_printf(bp,"%s %2d %02d:%02d:%02d %d%s",
@@ -489,4 +491,3 @@ err:
        OPENSSL_free(b);
        return(ret);
        }
-