Add appropriate lower bound checks for GeneralizedTime and UTCTime

[openssl.git] / crypto / asn1 / tasn_dec.c

diff --git a/crypto/asn1/tasn_dec.c b/crypto/asn1/tasn_dec.c
index 5c65d542c5be298ccfdaf4b92d6446c6e5e9acb6..bde074ff8af842411d972e438378c1023ea712a2 100644 (file)
--- a/crypto/asn1/tasn_dec.c
+++ b/crypto/asn1/tasn_dec.c
@@ -921,6 +921,14 @@ static int asn1_ex_c2i(ASN1_VALUE **pval, const unsigned char *cont, int len,
             ERR_raise(ERR_LIB_ASN1, ASN1_R_UNIVERSALSTRING_IS_WRONG_LENGTH);
             goto err;
         }
+        if (utype == V_ASN1_GENERALIZEDTIME && (len < 15)) {
+            ERR_raise(ERR_LIB_ASN1, ASN1_R_GENERALIZEDTIME_IS_TOO_SHORT);
+            goto err;
+        }
+        if (utype == V_ASN1_UTCTIME && (len < 13)) {
+            ERR_raise(ERR_LIB_ASN1, ASN1_R_UTCTIME_IS_TOO_SHORT);
+            goto err;
+        }
         /* All based on ASN1_STRING and handled the same */
         if (*pval == NULL) {
             stmp = ASN1_STRING_type_new(utype);