Some precautions to avoid potential security-relevant problems.

[openssl.git] / ssl / ssl_asn1.c

diff --git a/ssl/ssl_asn1.c b/ssl/ssl_asn1.c
index 2e8e1bcef453bade523cba8fa2b80b8817232bcd..8c4840219b551e69ffe3bfbf04c5f0be87514d5d 100644 (file)
--- a/ssl/ssl_asn1.c
+++ b/ssl/ssl_asn1.c
@@ -118,10 +118,13 @@ typedef struct ssl_session_asn1_st
 int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
        {
 #define LSIZE2 (sizeof(long)*2)
-       int v1=0,v2=0,v3=0,v4=0,v5=0,v6=0,v7=0,v8=0,v9=0,v10=0;
+       int v1=0,v2=0,v3=0,v4=0,v5=0,v7=0,v8=0;
        unsigned char buf[4],ibuf1[LSIZE2],ibuf2[LSIZE2];
        unsigned char ibuf3[LSIZE2],ibuf4[LSIZE2],ibuf5[LSIZE2];
+#ifndef OPENSSL_NO_TLSEXT
+       int v6=0,v9=0,v10=0;
        unsigned char ibuf6[LSIZE2];
+#endif
        long l;
        SSL_SESSION_ASN1 a;
        M_ASN1_I2D_vars(in);
@@ -227,12 +230,13 @@ int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
                 a.tlsext_tick.type=V_ASN1_OCTET_STRING;
                 a.tlsext_tick.data=(unsigned char *)in->tlsext_tick;
                /* If we have a ticket set session ID to empty because
-                * it will be bogus. 
+                * it will be bogus. If liftime hint is -1 treat as a special
+                * case because the session is being used as a container
                 */
-               if (in->tlsext_ticklen)
+               if (in->tlsext_ticklen && (in->tlsext_tick_lifetime_hint != -1))
                        a.session_id.length=0;
                 }
-       if (in->tlsext_tick_lifetime_hint != 0)
+       if (in->tlsext_tick_lifetime_hint > 0)
                {
                a.tlsext_tick_lifetime.length=LSIZE2;
                a.tlsext_tick_lifetime.type=V_ASN1_INTEGER;
@@ -277,7 +281,7 @@ int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
                M_ASN1_I2D_len_EXP_opt(&(a.verify_result),i2d_ASN1_INTEGER,5,v5);
 
 #ifndef OPENSSL_NO_TLSEXT
-       if (in->tlsext_tick_lifetime_hint)
+       if (in->tlsext_tick_lifetime_hint > 0)
                M_ASN1_I2D_len_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
        if (in->tlsext_tick)
                M_ASN1_I2D_len_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
@@ -325,7 +329,7 @@ int i2d_SSL_SESSION(SSL_SESSION *in, unsigned char **pp)
                M_ASN1_I2D_put_EXP_opt(&(a.psk_identity), i2d_ASN1_OCTET_STRING,8,v8);
 #endif /* OPENSSL_NO_PSK */
 #ifndef OPENSSL_NO_TLSEXT
-       if (in->tlsext_tick_lifetime_hint)
+       if (in->tlsext_tick_lifetime_hint > 0)
                M_ASN1_I2D_put_EXP_opt(&a.tlsext_tick_lifetime, i2d_ASN1_INTEGER,9,v9);
        if (in->tlsext_tick)
                M_ASN1_I2D_put_EXP_opt(&(a.tlsext_tick), i2d_ASN1_OCTET_STRING,10,v10);
@@ -409,7 +413,7 @@ SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
        memcpy(ret->session_id,os.data,os.length);
 
        M_ASN1_D2I_get_x(ASN1_OCTET_STRING,osp,d2i_ASN1_OCTET_STRING);
-       if (ret->master_key_length > SSL_MAX_MASTER_KEY_LENGTH)
+       if (os.length > SSL_MAX_MASTER_KEY_LENGTH)
                ret->master_key_length=SSL_MAX_MASTER_KEY_LENGTH;
        else
                ret->master_key_length=os.length;
@@ -539,6 +543,8 @@ SSL_SESSION *d2i_SSL_SESSION(SSL_SESSION **a, const unsigned char **pp,
                ret->tlsext_tick_lifetime_hint=ASN1_INTEGER_get(aip);
                OPENSSL_free(ai.data); ai.data=NULL; ai.length=0;
                }
+       else if (ret->tlsext_ticklen && ret->session_id_length)
+               ret->tlsext_tick_lifetime_hint = -1;
        else
                ret->tlsext_tick_lifetime_hint=0;
        os.length=0;