File CVE-2021-3712-other-ASN1_STRING-issues.patch of Package openssl-1_1.24730
diff --git a/crypto/asn1/t_spki.c b/crypto/asn1/t_spki.c
index 51b56d0..64ee77e 100644
--- a/crypto/asn1/t_spki.c
+++ b/crypto/asn1/t_spki.c
@@ -38,7 +38,7 @@ int NETSCAPE_SPKI_print(BIO *out, NETSCAPE_SPKI *spki)
}
chal = spki->spkac->challenge;
if (chal->length)
- BIO_printf(out, " Challenge String: %s\n", chal->data);
+ BIO_printf(out, " Challenge String: %.*s\n", chal->length, chal->data);
i = OBJ_obj2nid(spki->sig_algor.algorithm);
BIO_printf(out, " Signature Algorithm: %s",
(i == NID_undef) ? "UNKNOWN" : OBJ_nid2ln(i));
diff --git a/crypto/ec/ec_asn1.c b/crypto/ec/ec_asn1.c
index 271178f..0287896 100644
--- a/crypto/ec/ec_asn1.c
+++ b/crypto/ec/ec_asn1.c
@@ -768,7 +768,10 @@ EC_GROUP *EC_GROUP_new_from_ecparameters(const ECPARAMETERS *params)
ret->seed_len = params->curve->seed->length;
}
- if (!params->order || !params->base || !params->base->data) {
+ if (params->order == NULL
+ || params->base == NULL
+ || params->base->data == NULL
+ || params->base->length == 0) {
ECerr(EC_F_EC_GROUP_NEW_FROM_ECPARAMETERS, EC_R_ASN1_ERROR);
goto err;
}
diff --git a/crypto/include/internal/x509_int.h b/crypto/include/internal/x509_int.h
index eb43997..3282515 100644
--- a/crypto/include/internal/x509_int.h
+++ b/crypto/include/internal/x509_int.h
@@ -9,6 +9,9 @@
/* Internal X509 structures and functions: not for application use */
+#include <openssl/x509.h>
+#include <openssl/conf.h>
+
/* Note: unless otherwise stated a field pointer is mandatory and should
* never be set to NULL: the ASN.1 code and accessors rely on mandatory
* fields never being NULL.
@@ -266,3 +269,6 @@ struct x509_object_st {
int a2i_ipadd(unsigned char *ipout, const char *ipasc);
int x509_set1_time(ASN1_TIME **ptm, const ASN1_TIME *tm);
+
+int x509v3_add_len_value_uchar(const char *name, const unsigned char *value,
+ size_t vallen, STACK_OF(CONF_VALUE) **extlist);
diff --git a/crypto/x509v3/v3_akey.c b/crypto/x509v3/v3_akey.c
index d9f7704..f917142 100644
--- a/crypto/x509v3/v3_akey.c
+++ b/crypto/x509v3/v3_akey.c
@@ -39,20 +39,48 @@ static STACK_OF(CONF_VALUE) *i2v_AUTHORITY_KEYID(X509V3_EXT_METHOD *method,
STACK_OF(CONF_VALUE)
*extlist)
{
- char *tmp;
+ char *tmp = NULL;
+ STACK_OF(CONF_VALUE) *origextlist = extlist, *tmpextlist;
+
if (akeyid->keyid) {
tmp = OPENSSL_buf2hexstr(akeyid->keyid->data, akeyid->keyid->length);
- X509V3_add_value("keyid", tmp, &extlist);
+ if (tmp == NULL) {
+ X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, ERR_R_MALLOC_FAILURE);
+ return NULL;
+ }
+ if (!X509V3_add_value("keyid", tmp, &extlist)) {
+ OPENSSL_free(tmp);
+ X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, ERR_R_X509_LIB);
+ goto err;
+ }
OPENSSL_free(tmp);
}
- if (akeyid->issuer)
- extlist = i2v_GENERAL_NAMES(NULL, akeyid->issuer, extlist);
+ if (akeyid->issuer) {
+ tmpextlist = i2v_GENERAL_NAMES(NULL, akeyid->issuer, extlist);
+ if (tmpextlist == NULL) {
+ X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, ERR_R_X509_LIB);
+ goto err;
+ }
+ extlist = tmpextlist;
+ }
if (akeyid->serial) {
tmp = OPENSSL_buf2hexstr(akeyid->serial->data, akeyid->serial->length);
- X509V3_add_value("serial", tmp, &extlist);
+ if (tmp == NULL) {
+ X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ if (!X509V3_add_value("serial", tmp, &extlist)) {
+ OPENSSL_free(tmp);
+ X509V3err(X509V3_F_V2I_AUTHORITY_KEYID, ERR_R_X509_LIB);
+ goto err;
+ }
OPENSSL_free(tmp);
}
return extlist;
+ err:
+ if (origextlist == NULL)
+ sk_CONF_VALUE_pop_free(extlist, X509V3_conf_free);
+ return NULL;
}
/*-
diff --git a/crypto/x509v3/v3_alt.c b/crypto/x509v3/v3_alt.c
index a35d337..93f37fe 100644
--- a/crypto/x509v3/v3_alt.c
+++ b/crypto/x509v3/v3_alt.c
@@ -9,6 +9,7 @@
#include <stdio.h>
#include "internal/cryptlib.h"
+#include <openssl/x509.h>
#include <openssl/conf.h>
#include <openssl/x509v3.h>
#include "ext_dat.h"
@@ -85,17 +86,20 @@ STACK_OF(CONF_VALUE) *i2v_GENERAL_NAME(X509V3_EXT_METHOD *method,
break;
case GEN_EMAIL:
- if (!X509V3_add_value_uchar("email", gen->d.ia5->data, &ret))
+ if (!x509v3_add_len_value_uchar("email", gen->d.ia5->data,
+ gen->d.ia5->length, &ret))
return NULL;
break;
case GEN_DNS:
- if (!X509V3_add_value_uchar("DNS", gen->d.ia5->data, &ret))
+ if (!x509v3_add_len_value_uchar("DNS", gen->d.ia5->data,
+ gen->d.ia5->length, &ret))
return NULL;
break;
case GEN_URI:
- if (!X509V3_add_value_uchar("URI", gen->d.ia5->data, &ret))
+ if (!x509v3_add_len_value_uchar("URI", gen->d.ia5->data,
+ gen->d.ia5->length, &ret))
return NULL;
break;
diff --git a/crypto/x509v3/v3_cpols.c b/crypto/x509v3/v3_cpols.c
index 22c56ba..0b1d516 100644
--- a/crypto/x509v3/v3_cpols.c
+++ b/crypto/x509v3/v3_cpols.c
@@ -378,7 +378,8 @@ static void print_qualifiers(BIO *out, STACK_OF(POLICYQUALINFO) *quals,
qualinfo = sk_POLICYQUALINFO_value(quals, i);
switch (OBJ_obj2nid(qualinfo->pqualid)) {
case NID_id_qt_cps:
- BIO_printf(out, "%*sCPS: %s\n", indent, "",
+ BIO_printf(out, "%*sCPS: %.*s\n", indent, "",
+ qualinfo->d.cpsuri->length,
qualinfo->d.cpsuri->data);
break;
@@ -403,7 +404,8 @@ static void print_notice(BIO *out, USERNOTICE *notice, int indent)
if (notice->noticeref) {
NOTICEREF *ref;
ref = notice->noticeref;
- BIO_printf(out, "%*sOrganization: %s\n", indent, "",
+ BIO_printf(out, "%*sOrganization: %.*s\n", indent, "",
+ ref->organization->length,
ref->organization->data);
BIO_printf(out, "%*sNumber%s: ", indent, "",
sk_ASN1_INTEGER_num(ref->noticenos) > 1 ? "s" : "");
@@ -426,7 +428,8 @@ static void print_notice(BIO *out, USERNOTICE *notice, int indent)
BIO_puts(out, "\n");
}
if (notice->exptext)
- BIO_printf(out, "%*sExplicit Text: %s\n", indent, "",
+ BIO_printf(out, "%*sExplicit Text: %.*s\n", indent, "",
+ notice->exptext->length,
notice->exptext->data);
}
diff --git a/crypto/x509v3/v3_ncons.c b/crypto/x509v3/v3_ncons.c
index bd7301e..869e3a2 100644
--- a/crypto/x509v3/v3_ncons.c
+++ b/crypto/x509v3/v3_ncons.c
@@ -63,8 +63,31 @@ ASN1_SEQUENCE(NAME_CONSTRAINTS) = {
IMPLEMENT_ASN1_ALLOC_FUNCTIONS(GENERAL_SUBTREE)
IMPLEMENT_ASN1_ALLOC_FUNCTIONS(NAME_CONSTRAINTS)
+
+#define IA5_OFFSET_LEN(ia5base, offset) \
+ ((ia5base)->length - ((unsigned char *)(offset) - (ia5base)->data))
+
+/* Like memchr but for ASN1_IA5STRING. Additionally you can specify the
+ * starting point to search from
+ */
+# define ia5memchr(str, start, c) memchr(start, c, IA5_OFFSET_LEN(str, start))
+
+/* Like memrrchr but for ASN1_IA5STRING */
+static char *ia5memrchr(ASN1_IA5STRING *str, int c)
+{
+ int i;
+
+ for (i = str->length; i > 0 && str->data[i - 1] != c; i--);
+
+ if (i == 0)
+ return NULL;
+
+ return (char *)&str->data[i - 1];
+}
+
/*
- * We cannot use strncasecmp here because that applies locale specific rules.
+ * We cannot use strncasecmp here because that applies locale specific rules. It
+ * also doesn't work with ASN1_STRINGs that may have embedded NUL characters.
* For example in Turkish 'I' is not the uppercase character for 'i'. We need to
* do a simple ASCII case comparison ignoring the locale (that is why we use
* numeric constants below).
@@ -89,20 +112,12 @@ static int ia5ncasecmp(const char *s1, const char *s2, size_t n)
/* c1 > c2 */
return 1;
- } else if (*s1 == 0) {
- /* If we get here we know that *s2 == 0 too */
- return 0;
}
}
return 0;
}
-static int ia5casecmp(const char *s1, const char *s2)
-{
- return ia5ncasecmp(s1, s2, SIZE_MAX);
-}
-
static void *v2i_NAME_CONSTRAINTS(const X509V3_EXT_METHOD *method,
X509V3_CTX *ctx, STACK_OF(CONF_VALUE) *nval)
{
@@ -337,7 +352,7 @@ static int cn2dnsid(ASN1_STRING *cn, unsigned char **dnsid, size_t *idlen)
--utf8_length;
/* Reject *embedded* NULs */
- if ((size_t)utf8_length != strlen((char *)utf8_value)) {
+ if (memchr(utf8_value, 0, utf8_length) != NULL) {
OPENSSL_free(utf8_value);
return X509_V_ERR_UNSUPPORTED_NAME_SYNTAX;
}
@@ -536,9 +551,14 @@ static int nc_dns(ASN1_IA5STRING *dns, ASN1_IA5STRING *base)
{
char *baseptr = (char *)base->data;
char *dnsptr = (char *)dns->data;
+
/* Empty matches everything */
- if (!*baseptr)
+ if (base->length == 0)
return X509_V_OK;
+
+ if (dns->length < base->length)
+ return X509_V_ERR_PERMITTED_VIOLATION;
+
/*
* Otherwise can add zero or more components on the left so compare RHS
* and if dns is longer and expect '.' as preceding character.
@@ -549,7 +569,7 @@ static int nc_dns(ASN1_IA5STRING *dns, ASN1_IA5STRING *base)
return X509_V_ERR_PERMITTED_VIOLATION;
}
- if (ia5casecmp(baseptr, dnsptr))
+ if (ia5ncasecmp(baseptr, dnsptr, base->length))
return X509_V_ERR_PERMITTED_VIOLATION;
return X509_V_OK;
@@ -560,16 +580,17 @@ static int nc_email(ASN1_IA5STRING *eml, ASN1_IA5STRING *base)
{
const char *baseptr = (char *)base->data;
const char *emlptr = (char *)eml->data;
+ const char *baseat = ia5memrchr(base, '@');
+ const char *emlat = ia5memrchr(eml, '@');
+ size_t basehostlen, emlhostlen;
- const char *baseat = strchr(baseptr, '@');
- const char *emlat = strchr(emlptr, '@');
if (!emlat)
return X509_V_ERR_UNSUPPORTED_NAME_SYNTAX;
/* Special case: initial '.' is RHS match */
- if (!baseat && (*baseptr == '.')) {
+ if (!baseat && base->length > 0 && (*baseptr == '.')) {
if (eml->length > base->length) {
emlptr += eml->length - base->length;
- if (ia5casecmp(baseptr, emlptr) == 0)
+ if (ia5ncasecmp(baseptr, emlptr, base->length) == 0)
return X509_V_OK;
}
return X509_V_ERR_PERMITTED_VIOLATION;
@@ -589,8 +610,10 @@ static int nc_email(ASN1_IA5STRING *eml, ASN1_IA5STRING *base)
baseptr = baseat + 1;
}
emlptr = emlat + 1;
+ basehostlen = IA5_OFFSET_LEN(base, baseptr);
+ emlhostlen = IA5_OFFSET_LEN(eml, emlptr);
/* Just have hostname left to match: case insensitive */
- if (ia5casecmp(baseptr, emlptr))
+ if (basehostlen != emlhostlen || ia5ncasecmp(baseptr, emlptr, emlhostlen))
return X509_V_ERR_PERMITTED_VIOLATION;
return X509_V_OK;
@@ -601,10 +624,14 @@ static int nc_uri(ASN1_IA5STRING *uri, ASN1_IA5STRING *base)
{
const char *baseptr = (char *)base->data;
const char *hostptr = (char *)uri->data;
- const char *p = strchr(hostptr, ':');
+ const char *p = ia5memchr(uri, (char *)uri->data, ':');
int hostlen;
+
/* Check for foo:// and skip past it */
- if (!p || (p[1] != '/') || (p[2] != '/'))
+ if (p == NULL
+ || IA5_OFFSET_LEN(uri, p) < 3
+ || p[1] != '/'
+ || p[2] != '/')
return X509_V_ERR_UNSUPPORTED_NAME_SYNTAX;
hostptr = p + 3;
@@ -612,13 +639,13 @@ static int nc_uri(ASN1_IA5STRING *uri, ASN1_IA5STRING *base)
/* Look for a port indicator as end of hostname first */
- p = strchr(hostptr, ':');
+ p = ia5memchr(uri, hostptr, ':');
/* Otherwise look for trailing slash */
- if (!p)
- p = strchr(hostptr, '/');
+ if (p == NULL)
+ p = ia5memchr(uri, hostptr, '/');
- if (!p)
- hostlen = strlen(hostptr);
+ if (p == NULL)
+ hostlen = IA5_OFFSET_LEN(uri, hostptr);
else
hostlen = p - hostptr;
@@ -626,7 +653,7 @@ static int nc_uri(ASN1_IA5STRING *uri, ASN1_IA5STRING *base)
return X509_V_ERR_UNSUPPORTED_NAME_SYNTAX;
/* Special case: initial '.' is RHS match */
- if (*baseptr == '.') {
+ if (base->length > 0 && *baseptr == '.') {
if (hostlen > base->length) {
p = hostptr + hostlen - base->length;
if (ia5ncasecmp(p, baseptr, base->length) == 0)
diff --git a/crypto/x509v3/v3_pci.c b/crypto/x509v3/v3_pci.c
index 2c05edb..c171cc7 100644
--- a/crypto/x509v3/v3_pci.c
+++ b/crypto/x509v3/v3_pci.c
@@ -73,7 +73,8 @@ static int i2r_pci(X509V3_EXT_METHOD *method, PROXY_CERT_INFO_EXTENSION *pci,
i2a_ASN1_OBJECT(out, pci->proxyPolicy->policyLanguage);
BIO_puts(out, "\n");
if (pci->proxyPolicy->policy && pci->proxyPolicy->policy->data)
- BIO_printf(out, "%*sPolicy Text: %s\n", indent, "",
+ BIO_printf(out, "%*sPolicy Text: %.*s\n", indent, "",
+ pci->proxyPolicy->policy->length,
pci->proxyPolicy->policy->data);
return 1;
}
diff --git a/crypto/x509v3/v3_utl.c b/crypto/x509v3/v3_utl.c
index 418ef06..7013ded 100644
--- a/crypto/x509v3/v3_utl.c
+++ b/crypto/x509v3/v3_utl.c
@@ -15,6 +15,7 @@
#include <openssl/conf.h>
#include <openssl/crypto.h>
#include <openssl/x509v3.h>
+#include <string.h>
#include "internal/x509_int.h"
#include <openssl/bn.h>
#include "ext_dat.h"
@@ -33,17 +34,26 @@ static int ipv6_hex(unsigned char *out, const char *in, int inlen);
/* Add a CONF_VALUE name value pair to stack */
-int X509V3_add_value(const char *name, const char *value,
- STACK_OF(CONF_VALUE) **extlist)
+static int x509v3_add_len_value(const char *name, const char *value,
+ size_t vallen, STACK_OF(CONF_VALUE) **extlist)
{
CONF_VALUE *vtmp = NULL;
char *tname = NULL, *tvalue = NULL;
int sk_allocated = (*extlist == NULL);
- if (name && (tname = OPENSSL_strdup(name)) == NULL)
- goto err;
- if (value && (tvalue = OPENSSL_strdup(value)) == NULL)
+ if (name != NULL && (tname = OPENSSL_strdup(name)) == NULL)
goto err;
+ if (value != NULL && vallen > 0) {
+ /*
+ * We tolerate a single trailing NUL character, but otherwise no
+ * embedded NULs
+ */
+ if (memchr(value, 0, vallen - 1) != NULL)
+ goto err;
+ tvalue = OPENSSL_strndup(value, vallen);
+ if (tvalue == NULL)
+ goto err;
+ }
if ((vtmp = OPENSSL_malloc(sizeof(*vtmp))) == NULL)
goto err;
if (sk_allocated && (*extlist = sk_CONF_VALUE_new_null()) == NULL)
@@ -66,10 +76,26 @@ int X509V3_add_value(const char *name, const char *value,
return 0;
}
+int X509V3_add_value(const char *name, const char *value,
+ STACK_OF(CONF_VALUE) **extlist)
+{
+ return x509v3_add_len_value(name, value,
+ value != NULL ? strlen((const char *)value) : 0,
+ extlist);
+}
+
int X509V3_add_value_uchar(const char *name, const unsigned char *value,
STACK_OF(CONF_VALUE) **extlist)
{
- return X509V3_add_value(name, (const char *)value, extlist);
+ return x509v3_add_len_value(name, (const char *)value,
+ value != NULL ? strlen((const char *)value) : 0,
+ extlist);
+}
+
+int x509v3_add_len_value_uchar(const char *name, const unsigned char *value,
+ size_t vallen, STACK_OF(CONF_VALUE) **extlist)
+{
+ return x509v3_add_len_value(name, (const char *)value, vallen, extlist);
}
/* Free function for STACK_OF(CONF_VALUE) */
@@ -501,18 +527,26 @@ static int append_ia5(STACK_OF(OPENSSL_STRING) **sk, const ASN1_IA5STRING *email
/* First some sanity checks */
if (email->type != V_ASN1_IA5STRING)
return 1;
- if (!email->data || !email->length)
+ if (email->data == NULL || email->length == 0)
+ return 1;
+ if (memchr(email->data, 0, email->length) != NULL)
return 1;
if (*sk == NULL)
*sk = sk_OPENSSL_STRING_new(sk_strcmp);
if (*sk == NULL)
return 0;
+
+ emtmp = OPENSSL_strndup((char *)email->data, email->length);
+ if (emtmp == NULL)
+ return 0;
+
/* Don't add duplicates */
- if (sk_OPENSSL_STRING_find(*sk, (char *)email->data) != -1)
+ if (sk_OPENSSL_STRING_find(*sk, emtmp) != -1) {
+ OPENSSL_free(emtmp);
return 1;
- emtmp = OPENSSL_strdup((char *)email->data);
- if (emtmp == NULL || !sk_OPENSSL_STRING_push(*sk, emtmp)) {
- OPENSSL_free(emtmp); /* free on push failure */
+ }
+ if (!sk_OPENSSL_STRING_push(*sk, emtmp)) {
+ OPENSSL_free(emtmp); /* free on push failure */
X509_email_free(*sk);
*sk = NULL;
return 0;
