From e10349ab8dda8a3f11be6aa19f2b6e29fe814044 Mon Sep 17 00:00:00 2001
From: wolfbeast <mcwerewolf@gmail.com>
Date: Fri, 23 Feb 2018 11:04:39 +0100
Subject: Update NSS to 3.35-RTM

---
 security/nss/lib/freebl/rsa.c | 35 +++++++++++++++++++++++++----------
 1 file changed, 25 insertions(+), 10 deletions(-)

(limited to 'security/nss/lib/freebl/rsa.c')

diff --git a/security/nss/lib/freebl/rsa.c b/security/nss/lib/freebl/rsa.c
index 7354d9317..a08636de6 100644
--- a/security/nss/lib/freebl/rsa.c
+++ b/security/nss/lib/freebl/rsa.c
@@ -276,7 +276,10 @@ RSAPrivateKey *
 RSA_NewKey(int keySizeInBits, SECItem *publicExponent)
 {
     unsigned int primeLen;
-    mp_int p, q, e, d;
+    mp_int p = { 0, 0, 0, NULL };
+    mp_int q = { 0, 0, 0, NULL };
+    mp_int e = { 0, 0, 0, NULL };
+    mp_int d = { 0, 0, 0, NULL };
     int kiter;
     int max_attempts;
     mp_err err = MP_OKAY;
@@ -290,34 +293,46 @@ RSA_NewKey(int keySizeInBits, SECItem *publicExponent)
         PORT_SetError(SEC_ERROR_INVALID_ARGS);
         return NULL;
     }
-    /* 1. Allocate arena & key */
+    /* 1.  Set the public exponent and check if it's uneven and greater than 2.*/
+    MP_DIGITS(&e) = 0;
+    CHECK_MPI_OK(mp_init(&e));
+    SECITEM_TO_MPINT(*publicExponent, &e);
+    if (mp_iseven(&e) || !(mp_cmp_d(&e, 2) > 0)) {
+        PORT_SetError(SEC_ERROR_INVALID_ARGS);
+        goto cleanup;
+    }
+#ifndef NSS_FIPS_DISABLED
+    /* Check that the exponent is not smaller than 65537  */
+    if (mp_cmp_d(&e, 0x10001) < 0) {
+        PORT_SetError(SEC_ERROR_INVALID_ARGS);
+        goto cleanup;
+    }
+#endif
+
+    /* 2. Allocate arena & key */
     arena = PORT_NewArena(NSS_FREEBL_DEFAULT_CHUNKSIZE);
     if (!arena) {
         PORT_SetError(SEC_ERROR_NO_MEMORY);
-        return NULL;
+        goto cleanup;
     }
     key = PORT_ArenaZNew(arena, RSAPrivateKey);
     if (!key) {
         PORT_SetError(SEC_ERROR_NO_MEMORY);
-        PORT_FreeArena(arena, PR_TRUE);
-        return NULL;
+        goto cleanup;
     }
     key->arena = arena;
     /* length of primes p and q (in bytes) */
     primeLen = keySizeInBits / (2 * PR_BITS_PER_BYTE);
     MP_DIGITS(&p) = 0;
     MP_DIGITS(&q) = 0;
-    MP_DIGITS(&e) = 0;
     MP_DIGITS(&d) = 0;
     CHECK_MPI_OK(mp_init(&p));
     CHECK_MPI_OK(mp_init(&q));
-    CHECK_MPI_OK(mp_init(&e));
     CHECK_MPI_OK(mp_init(&d));
-    /* 2.  Set the version number (PKCS1 v1.5 says it should be zero) */
+    /* 3.  Set the version number (PKCS1 v1.5 says it should be zero) */
     SECITEM_AllocItem(arena, &key->version, 1);
     key->version.data[0] = 0;
-    /* 3.  Set the public exponent */
-    SECITEM_TO_MPINT(*publicExponent, &e);
+
     kiter = 0;
     max_attempts = 5 * (keySizeInBits / 2); /* FIPS 186-4 B.3.3 steps 4.7 and 5.8 */
     do {
-- 
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