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Multiple security issues fixed.

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- fix CVE-2015-0209 - potential use after free in d2i_ECPrivateKey()
- fix CVE-2015-0286 - improper handling of ASN.1 boolean comparison
- fix CVE-2015-0287 - ASN.1 structure reuse decoding memory corruption
- fix CVE-2015-0289 - NULL dereference decoding invalid PKCS#7 data
- fix CVE-2015-0293 - triggerable assert in SSLv2 server
This commit is contained in:
Tomas Mraz 2015-03-19 18:08:12 +01:00
parent 446f9bea43
commit 729d2d0e11
7 changed files with 383 additions and 1 deletions
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13
openssl-1.0.1e-cve-2015-0286.patch Normal file
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@ -0,0 +1,13 @@
diff -up openssl-1.0.1e/crypto/asn1/a_type.c.bool-cmp openssl-1.0.1e/crypto/asn1/a_type.c
--- openssl-1.0.1e/crypto/asn1/a_type.c.bool-cmp 2015-03-18 13:02:36.000000000 +0100
+++ openssl-1.0.1e/crypto/asn1/a_type.c 2015-03-18 14:38:07.111401390 +0100
@@ -124,6 +124,9 @@ int ASN1_TYPE_cmp(const ASN1_TYPE *a, co
case V_ASN1_OBJECT:
result = OBJ_cmp(a->value.object, b->value.object);
break;
+ case V_ASN1_BOOLEAN:
+ result = a->value.boolean - b->value.boolean;
+ break;
case V_ASN1_NULL:
result = 0; /* They do not have content. */
break;

46
openssl-1.0.1e-cve-2015-0287.patch Normal file
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@ -0,0 +1,46 @@
diff -up openssl-1.0.1e/crypto/asn1/tasn_dec.c.item-reuse openssl-1.0.1e/crypto/asn1/tasn_dec.c
--- openssl-1.0.1e/crypto/asn1/tasn_dec.c.item-reuse 2013-02-11 16:26:04.000000000 +0100
+++ openssl-1.0.1e/crypto/asn1/tasn_dec.c 2015-03-19 15:46:51.097022616 +0100
@@ -310,9 +310,19 @@ int ASN1_item_ex_d2i(ASN1_VALUE **pval,
case ASN1_ITYPE_CHOICE:
if (asn1_cb && !asn1_cb(ASN1_OP_D2I_PRE, pval, it, NULL))
goto auxerr;
-
- /* Allocate structure */
- if (!*pval && !ASN1_item_ex_new(pval, it))
+ if (*pval)
+ {
+ /* Free up and zero CHOICE value if initialised */
+ i = asn1_get_choice_selector(pval, it);
+ if ((i >= 0) && (i < it->tcount))
+ {
+ tt = it->templates + i;
+ pchptr = asn1_get_field_ptr(pval, tt);
+ ASN1_template_free(pchptr, tt);
+ asn1_set_choice_selector(pval, -1, it);
+ }
+ }
+ else if (!ASN1_item_ex_new(pval, it))
{
ASN1err(ASN1_F_ASN1_ITEM_EX_D2I,
ERR_R_NESTED_ASN1_ERROR);
@@ -407,6 +417,19 @@ int ASN1_item_ex_d2i(ASN1_VALUE **pval,
if (asn1_cb && !asn1_cb(ASN1_OP_D2I_PRE, pval, it, NULL))
goto auxerr;
+ /* Free up and zero any ADB found */
+ for (i = 0, tt = it->templates; i < it->tcount; i++, tt++)
+ {
+ if (tt->flags & ASN1_TFLG_ADB_MASK)
+ {
+ const ASN1_TEMPLATE *seqtt;
+ ASN1_VALUE **pseqval;
+ seqtt = asn1_do_adb(pval, tt, 1);
+ pseqval = asn1_get_field_ptr(pval, seqtt);
+ ASN1_template_free(pseqval, seqtt);
+ }
+ }
+
/* Get each field entry */
for (i = 0, tt = it->templates; i < it->tcount; i++, tt++)
{

12
openssl-1.0.1e-cve-2015-0288.patch Normal file
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@ -0,0 +1,12 @@
diff -up openssl-1.0.1e/crypto/x509/x509_req.c.req-null-deref openssl-1.0.1e/crypto/x509/x509_req.c
--- openssl-1.0.1e/crypto/x509/x509_req.c.req-null-deref 2013-02-11 16:26:04.000000000 +0100
+++ openssl-1.0.1e/crypto/x509/x509_req.c 2015-03-18 18:34:35.732448017 +0100
@@ -92,6 +92,8 @@ X509_REQ *X509_to_X509_REQ(X509 *x, EVP_
goto err;
pktmp = X509_get_pubkey(x);
+ if (pktmp == NULL)
+ goto err;
i=X509_REQ_set_pubkey(ret,pktmp);
EVP_PKEY_free(pktmp);
if (!i) goto err;

102
openssl-1.0.1e-cve-2015-0293.patch Normal file
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@ -0,0 +1,102 @@
diff -up openssl-1.0.1e/ssl/s2_lib.c.ssl2-assert openssl-1.0.1e/ssl/s2_lib.c
--- openssl-1.0.1e/ssl/s2_lib.c.ssl2-assert 2015-03-18 13:02:36.000000000 +0100
+++ openssl-1.0.1e/ssl/s2_lib.c 2015-03-18 18:22:20.195322489 +0100
@@ -488,7 +488,7 @@ int ssl2_generate_key_material(SSL *s)
OPENSSL_assert(s->session->master_key_length >= 0
&& s->session->master_key_length
- < (int)sizeof(s->session->master_key));
+ <= (int)sizeof(s->session->master_key));
EVP_DigestUpdate(&ctx,s->session->master_key,s->session->master_key_length);
EVP_DigestUpdate(&ctx,&c,1);
c++;
diff -up openssl-1.0.1e/ssl/s2_srvr.c.ssl2-assert openssl-1.0.1e/ssl/s2_srvr.c
--- openssl-1.0.1e/ssl/s2_srvr.c.ssl2-assert 2013-02-11 16:26:04.000000000 +0100
+++ openssl-1.0.1e/ssl/s2_srvr.c 2015-03-18 18:30:11.403974038 +0100
@@ -446,9 +446,6 @@ static int get_client_master_key(SSL *s)
SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_NO_PRIVATEKEY);
return(-1);
}
- i=ssl_rsa_private_decrypt(s->cert,s->s2->tmp.enc,
- &(p[s->s2->tmp.clear]),&(p[s->s2->tmp.clear]),
- (s->s2->ssl2_rollback)?RSA_SSLV23_PADDING:RSA_PKCS1_PADDING);
is_export=SSL_C_IS_EXPORT(s->session->cipher);
@@ -467,21 +464,61 @@ static int get_client_master_key(SSL *s)
else
ek=5;
+ /*
+ * The format of the CLIENT-MASTER-KEY message is
+ * 1 byte message type
+ * 3 bytes cipher
+ * 2-byte clear key length (stored in s->s2->tmp.clear)
+ * 2-byte encrypted key length (stored in s->s2->tmp.enc)
+ * 2-byte key args length (IV etc)
+ * clear key
+ * encrypted key
+ * key args
+ *
+ * If the cipher is an export cipher, then the encrypted key bytes
+ * are a fixed portion of the total key (5 or 8 bytes). The size of
+ * this portion is in |ek|. If the cipher is not an export cipher,
+ * then the entire key material is encrypted (i.e., clear key length
+ * must be zero).
+ */
+ if ((!is_export && s->s2->tmp.clear != 0) ||
+ (is_export && s->s2->tmp.clear + ek != EVP_CIPHER_key_length(c)))
+ {
+ ssl2_return_error(s, SSL2_PE_UNDEFINED_ERROR);
+ SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_BAD_LENGTH);
+ return -1;
+ }
+ /*
+ * The encrypted blob must decrypt to the encrypted portion of the key.
+ * Decryption can't be expanding, so if we don't have enough encrypted
+ * bytes to fit the key in the buffer, stop now.
+ */
+ if ((is_export && s->s2->tmp.enc < ek) ||
+ (!is_export && s->s2->tmp.enc < EVP_CIPHER_key_length(c)))
+ {
+ ssl2_return_error(s,SSL2_PE_UNDEFINED_ERROR);
+ SSLerr(SSL_F_GET_CLIENT_MASTER_KEY,SSL_R_LENGTH_TOO_SHORT);
+ return -1;
+ }
+
+ i = ssl_rsa_private_decrypt(s->cert, s->s2->tmp.enc,
+ &(p[s->s2->tmp.clear]),
+ &(p[s->s2->tmp.clear]),
+ (s->s2->ssl2_rollback) ? RSA_SSLV23_PADDING : RSA_PKCS1_PADDING);
+
/* bad decrypt */
#if 1
/* If a bad decrypt, continue with protocol but with a
* random master secret (Bleichenbacher attack) */
- if ((i < 0) ||
- ((!is_export && (i != EVP_CIPHER_key_length(c)))
- || (is_export && ((i != ek) || (s->s2->tmp.clear+(unsigned int)i !=
- (unsigned int)EVP_CIPHER_key_length(c))))))
+ if ((i < 0) || ((!is_export && i != EVP_CIPHER_key_length(c))
+ || (is_export && i != ek)))
{
ERR_clear_error();
if (is_export)
i=ek;
else
i=EVP_CIPHER_key_length(c);
- if (RAND_pseudo_bytes(p,i) <= 0)
+ if (RAND_pseudo_bytes(&p[s->s2->tmp.clear],i) <= 0)
return 0;
}
#else
@@ -505,7 +542,8 @@ static int get_client_master_key(SSL *s)
}
#endif
- if (is_export) i+=s->s2->tmp.clear;
+ if (is_export)
+ i = EVP_CIPHER_key_length(c);
if (i > SSL_MAX_MASTER_KEY_LENGTH)
{

27
openssl-1.0.1k-cve-2015-0209.patch Normal file
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@ -0,0 +1,27 @@
diff -up openssl-1.0.1k/crypto/ec/ec_asn1.c.use-after-free openssl-1.0.1k/crypto/ec/ec_asn1.c
--- openssl-1.0.1k/crypto/ec/ec_asn1.c.use-after-free 2014-10-15 15:49:54.000000000 +0200
+++ openssl-1.0.1k/crypto/ec/ec_asn1.c 2015-03-19 17:28:03.349627040 +0100
@@ -1142,8 +1142,6 @@ EC_KEY *d2i_ECPrivateKey(EC_KEY **a, con
ERR_R_MALLOC_FAILURE);
goto err;
}
- if (a)
- *a = ret;
}
else
ret = *a;
@@ -1225,11 +1223,13 @@ EC_KEY *d2i_ECPrivateKey(EC_KEY **a, con
ret->enc_flag |= EC_PKEY_NO_PUBKEY;
}
+ if (a)
+ *a = ret;
ok = 1;
err:
if (!ok)
{
- if (ret)
+ if (ret && (a == NULL || *a != ret))
EC_KEY_free(ret);
ret = NULL;
}

163
openssl-1.0.1k-cve-2015-0289.patch Normal file
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@ -0,0 +1,163 @@
diff -up openssl-1.0.1k/crypto/pkcs7/pk7_doit.c.pkcs7-null-deref openssl-1.0.1k/crypto/pkcs7/pk7_doit.c
--- openssl-1.0.1k/crypto/pkcs7/pk7_doit.c.pkcs7-null-deref 2015-01-08 15:00:36.000000000 +0100
+++ openssl-1.0.1k/crypto/pkcs7/pk7_doit.c 2015-03-19 17:30:36.797650980 +0100
@@ -272,6 +272,27 @@ BIO *PKCS7_dataInit(PKCS7 *p7, BIO *bio)
PKCS7_RECIP_INFO *ri=NULL;
ASN1_OCTET_STRING *os=NULL;
+ if (p7 == NULL)
+ {
+ PKCS7err(PKCS7_F_PKCS7_DATAINIT, PKCS7_R_INVALID_NULL_POINTER);
+ return NULL;
+ }
+ /*
+ * The content field in the PKCS7 ContentInfo is optional, but that really
+ * only applies to inner content (precisely, detached signatures).
+ *
+ * When reading content, missing outer content is therefore treated as an
+ * error.
+ *
+ * When creating content, PKCS7_content_new() must be called before
+ * calling this method, so a NULL p7->d is always an error.
+ */
+ if (p7->d.ptr == NULL)
+ {
+ PKCS7err(PKCS7_F_PKCS7_DATAINIT, PKCS7_R_NO_CONTENT);
+ return NULL;
+ }
+
i=OBJ_obj2nid(p7->type);
p7->state=PKCS7_S_HEADER;
@@ -433,6 +454,18 @@ BIO *PKCS7_dataDecode(PKCS7 *p7, EVP_PKE
unsigned char *ek = NULL, *tkey = NULL;
int eklen = 0, tkeylen = 0;
+ if (p7 == NULL)
+ {
+ PKCS7err(PKCS7_F_PKCS7_DATADECODE, PKCS7_R_INVALID_NULL_POINTER);
+ return NULL;
+ }
+
+ if (p7->d.ptr == NULL)
+ {
+ PKCS7err(PKCS7_F_PKCS7_DATADECODE, PKCS7_R_NO_CONTENT);
+ return NULL;
+ }
+
i=OBJ_obj2nid(p7->type);
p7->state=PKCS7_S_HEADER;
@@ -752,6 +785,18 @@ int PKCS7_dataFinal(PKCS7 *p7, BIO *bio)
STACK_OF(PKCS7_SIGNER_INFO) *si_sk=NULL;
ASN1_OCTET_STRING *os=NULL;
+ if (p7 == NULL)
+ {
+ PKCS7err(PKCS7_F_PKCS7_DATAFINAL, PKCS7_R_INVALID_NULL_POINTER);
+ return 0;
+ }
+
+ if (p7->d.ptr == NULL)
+ {
+ PKCS7err(PKCS7_F_PKCS7_DATAFINAL, PKCS7_R_NO_CONTENT);
+ return 0;
+ }
+
EVP_MD_CTX_init(&ctx_tmp);
i=OBJ_obj2nid(p7->type);
p7->state=PKCS7_S_HEADER;
@@ -796,6 +841,7 @@ int PKCS7_dataFinal(PKCS7 *p7, BIO *bio)
/* If detached data then the content is excluded */
if(PKCS7_type_is_data(p7->d.sign->contents) && p7->detached) {
M_ASN1_OCTET_STRING_free(os);
+ os = NULL;
p7->d.sign->contents->d.data = NULL;
}
break;
@@ -806,6 +852,7 @@ int PKCS7_dataFinal(PKCS7 *p7, BIO *bio)
if(PKCS7_type_is_data(p7->d.digest->contents) && p7->detached)
{
M_ASN1_OCTET_STRING_free(os);
+ os = NULL;
p7->d.digest->contents->d.data = NULL;
}
break;
@@ -878,23 +925,32 @@ int PKCS7_dataFinal(PKCS7 *p7, BIO *bio)
M_ASN1_OCTET_STRING_set(p7->d.digest->digest, md_data, md_len);
}
- if (!PKCS7_is_detached(p7) && !(os->flags & ASN1_STRING_FLAG_NDEF))
+ if (!PKCS7_is_detached(p7))
{
- char *cont;
- long contlen;
- btmp=BIO_find_type(bio,BIO_TYPE_MEM);
- if (btmp == NULL)
- {
- PKCS7err(PKCS7_F_PKCS7_DATAFINAL,PKCS7_R_UNABLE_TO_FIND_MEM_BIO);
+ /*
+ * NOTE(emilia): I think we only reach os == NULL here because detached
+ * digested data support is broken.
+ */
+ if (os == NULL)
goto err;
+ if (!(os->flags & ASN1_STRING_FLAG_NDEF))
+ {
+ char *cont;
+ long contlen;
+ btmp=BIO_find_type(bio,BIO_TYPE_MEM);
+ if (btmp == NULL)
+ {
+ PKCS7err(PKCS7_F_PKCS7_DATAFINAL,PKCS7_R_UNABLE_TO_FIND_MEM_BIO);
+ goto err;
+ }
+ contlen = BIO_get_mem_data(btmp, &cont);
+ /* Mark the BIO read only then we can use its copy of the data
+ * instead of making an extra copy.
+ */
+ BIO_set_flags(btmp, BIO_FLAGS_MEM_RDONLY);
+ BIO_set_mem_eof_return(btmp, 0);
+ ASN1_STRING_set0(os, (unsigned char *)cont, contlen);
}
- contlen = BIO_get_mem_data(btmp, &cont);
- /* Mark the BIO read only then we can use its copy of the data
- * instead of making an extra copy.
- */
- BIO_set_flags(btmp, BIO_FLAGS_MEM_RDONLY);
- BIO_set_mem_eof_return(btmp, 0);
- ASN1_STRING_set0(os, (unsigned char *)cont, contlen);
}
ret=1;
err:
@@ -971,6 +1027,18 @@ int PKCS7_dataVerify(X509_STORE *cert_st
STACK_OF(X509) *cert;
X509 *x509;
+ if (p7 == NULL)
+ {
+ PKCS7err(PKCS7_F_PKCS7_DATAVERIFY, PKCS7_R_INVALID_NULL_POINTER);
+ return 0;
+ }
+
+ if (p7->d.ptr == NULL)
+ {
+ PKCS7err(PKCS7_F_PKCS7_DATAVERIFY, PKCS7_R_NO_CONTENT);
+ return 0;
+ }
+
if (PKCS7_type_is_signed(p7))
{
cert=p7->d.sign->cert;
diff -up openssl-1.0.1k/crypto/pkcs7/pk7_lib.c.pkcs7-null-deref openssl-1.0.1k/crypto/pkcs7/pk7_lib.c
--- openssl-1.0.1k/crypto/pkcs7/pk7_lib.c.pkcs7-null-deref 2014-10-15 15:49:15.000000000 +0200
+++ openssl-1.0.1k/crypto/pkcs7/pk7_lib.c 2015-03-19 17:30:36.797650980 +0100
@@ -459,6 +459,8 @@ int PKCS7_set_digest(PKCS7 *p7, const EV
STACK_OF(PKCS7_SIGNER_INFO) *PKCS7_get_signer_info(PKCS7 *p7)
{
+ if (p7 == NULL || p7->d.ptr == NULL)
+ return NULL;
if (PKCS7_type_is_signed(p7))
{
return(p7->d.sign->signer_info);

21
openssl.spec
View File

@ -23,7 +23,7 @@
Summary: Utilities from the general purpose cryptography library with TLS implementation
Name: openssl
Version: 1.0.1k
Release: 5%{?dist}
Release: 6%{?dist}
Epoch: 1
# We have to remove certain patented algorithms from the openssl source
# tarball with the hobble-openssl script which is included below.
@ -90,6 +90,12 @@ Patch84: openssl-1.0.1k-trusted-first.patch
Patch85: openssl-1.0.1e-arm-use-elf-auxv-caps.patch
Patch86: openssl-1.0.1k-ephemeral-key-size.patch
Patch87: openssl-1.0.1e-cc-reqs.patch
Patch101: openssl-1.0.1k-cve-2015-0209.patch
Patch102: openssl-1.0.1e-cve-2015-0286.patch
Patch103: openssl-1.0.1e-cve-2015-0287.patch
Patch104: openssl-1.0.1e-cve-2015-0288.patch
Patch105: openssl-1.0.1k-cve-2015-0289.patch
Patch106: openssl-1.0.1e-cve-2015-0293.patch
License: OpenSSL
Group: System Environment/Libraries
@ -213,6 +219,12 @@ cp %{SOURCE12} %{SOURCE13} crypto/ec/
%patch85 -p1 -b .armcap
%patch86 -p1 -b .ephemeral
%patch87 -p1 -b .cc-reqs
%patch101 -p1 -b .use-after-free
%patch102 -p1 -b .bool-cmp
%patch103 -p1 -b .item-reuse
%patch104 -p1 -b .req-null-deref
%patch105 -p1 -b .pkcs7-null-deref
%patch106 -p1 -b .ssl2-assert
sed -i 's/SHLIB_VERSION_NUMBER "1.0.0"/SHLIB_VERSION_NUMBER "%{version}"/' crypto/opensslv.h
@ -480,6 +492,13 @@ rm -rf $RPM_BUILD_ROOT/%{_libdir}/fipscanister.*
%postun libs -p /sbin/ldconfig
%changelog
* Thu Mar 19 2015 Tomáš Mráz <tmraz@redhat.com> 1.0.1k-6
- fix CVE-2015-0209 - potential use after free in d2i_ECPrivateKey()
- fix CVE-2015-0286 - improper handling of ASN.1 boolean comparison
- fix CVE-2015-0287 - ASN.1 structure reuse decoding memory corruption
- fix CVE-2015-0289 - NULL dereference decoding invalid PKCS#7 data
- fix CVE-2015-0293 - triggerable assert in SSLv2 server
* Mon Mar 16 2015 Tomáš Mráz <tmraz@redhat.com> 1.0.1k-5
- fix bug in the CRYPTO_128_unwrap()