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Sergey Zhemoytel 2023-12-20 13:03:04 +03:00
commit 23ed1424a9
3 changed files with 332 additions and 4 deletions
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240
0088-CVE-2020-1971.patch Normal file
View file

@ -0,0 +1,240 @@
From f22d7684aed13a9ae9ea6554b7a3e52fdfa4f193 Mon Sep 17 00:00:00 2001
From: tb <>
Date: Tue, 8 Dec 2020 15:06:42 +0000
Subject: [PATCH] Fix a NULL dereference in GENERAL_NAME_cmp()
Comparing two GENERAL_NAME structures containing an EDIPARTYNAME can lead
to a crash. This enables a denial of service attack for an attacker who can
control both sides of the comparison.
Issue reported to OpenSSL on Nov 9 by David Benjamin.
OpenSSL shared the information with us on Dec 1st.
Fix from Matt Caswell (OpenSSL) with a few small tweaks.
ok jsing
[ mikhailnov: ported to v3.2.0, changed src/lib/libcrypto/x509/x509_genn.c to src/lib/libcrypto/x509v3/v3_genn.c ]
---
src/lib/libcrypto/asn1/asn1.h | 3 +-
src/lib/libcrypto/asn1/asn1_err.c | 3 +-
src/lib/libcrypto/asn1/asn1_lib.c | 4 ++-
src/lib/libcrypto/asn1/tasn_dec.c | 22 ++++++++++++-
src/lib/libcrypto/asn1/tasn_enc.c | 21 +++++++++++-
src/lib/libcrypto/x509v3/v3_genn.c | 52 ++++++++++++++++++++++++++----
6 files changed, 94 insertions(+), 11 deletions(-)
diff --git a/src/lib/libcrypto/asn1/asn1.h b/src/lib/libcrypto/asn1/asn1.h
index 0a8da415fb..76c294ada8 100644
--- a/src/lib/libcrypto/asn1/asn1.h
+++ b/src/lib/libcrypto/asn1/asn1.h
@@ -1137,6 +1137,7 @@ void ERR_load_ASN1_strings(void);
#define ASN1_R_BAD_OBJECT_HEADER 102
#define ASN1_R_BAD_PASSWORD_READ 103
#define ASN1_R_BAD_TAG 104
+#define ASN1_R_BAD_TEMPLATE 230
#define ASN1_R_BMPSTRING_IS_WRONG_LENGTH 214
#define ASN1_R_BN_LIB 105
#define ASN1_R_BOOLEAN_IS_WRONG_LENGTH 106
diff --git a/src/lib/libcrypto/asn1/asn1_err.c b/src/lib/libcrypto/asn1/asn1_err.c
index 5cc355084f..e2c56deb5b 100644
--- a/src/lib/libcrypto/asn1/asn1_err.c
+++ b/src/lib/libcrypto/asn1/asn1_err.c
@@ -85,6 +85,7 @@ static ERR_STRING_DATA ASN1_str_reasons[] = {
{ERR_REASON(ASN1_R_BAD_OBJECT_HEADER) , "bad object header"},
{ERR_REASON(ASN1_R_BAD_PASSWORD_READ) , "bad password read"},
{ERR_REASON(ASN1_R_BAD_TAG) , "bad tag"},
+ {ERR_REASON(ASN1_R_BAD_TEMPLATE) , "bad template"},
{ERR_REASON(ASN1_R_BMPSTRING_IS_WRONG_LENGTH), "bmpstring is wrong length"},
{ERR_REASON(ASN1_R_BN_LIB) , "bn lib"},
{ERR_REASON(ASN1_R_BOOLEAN_IS_WRONG_LENGTH), "boolean is wrong length"},
diff --git a/src/lib/libcrypto/asn1/asn1_lib.c b/src/lib/libcrypto/asn1/asn1_lib.c
index 5dc520c428..d760cccd4d 100644
--- a/src/lib/libcrypto/asn1/asn1_lib.c
+++ b/src/lib/libcrypto/asn1/asn1_lib.c
@@ -388,6 +388,8 @@ ASN1_STRING_cmp(const ASN1_STRING *a, const ASN1_STRING *b)
{
int i;
+ if (a == NULL || b == NULL)
+ return -1;
i = (a->length - b->length);
if (i == 0) {
i = memcmp(a->data, b->data, a->length);
diff --git a/src/lib/libcrypto/asn1/tasn_dec.c b/src/lib/libcrypto/asn1/tasn_dec.c
index 70dc355ca1..4b08e90404 100644
--- a/src/lib/libcrypto/asn1/tasn_dec.c
+++ b/src/lib/libcrypto/asn1/tasn_dec.c
@@ -210,6 +210,16 @@ asn1_item_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len,
break;
case ASN1_ITYPE_MSTRING:
+ /*
+ * It never makes sense for multi-strings to have implicit
+ * tagging, so if tag != -1, then this looks like an error in
+ * the template.
+ */
+ if (tag != -1) {
+ ASN1error(ASN1_R_BAD_TEMPLATE);
+ goto err;
+ }
+
p = *in;
/* Just read in tag and class */
ret = asn1_check_tlen(NULL, &otag, &oclass, NULL, NULL,
@@ -245,6 +255,16 @@ asn1_item_ex_d2i(ASN1_VALUE **pval, const unsigned char **in, long len,
it, tag, aclass, opt, ctx);
case ASN1_ITYPE_CHOICE:
+ /*
+ * It never makes sense for CHOICE types to have implicit
+ * tagging, so if tag != -1, then this looks like an error in
+ * the template.
+ */
+ if (tag != -1) {
+ ASN1error(ASN1_R_BAD_TEMPLATE);
+ goto err;
+ }
+
if (asn1_cb && !asn1_cb(ASN1_OP_D2I_PRE, pval, it, NULL))
goto auxerr;
diff --git a/src/lib/libcrypto/asn1/tasn_enc.c b/src/lib/libcrypto/asn1/tasn_enc.c
index d103c4d096..5d95f035ef 100644
--- a/src/lib/libcrypto/asn1/tasn_enc.c
+++ b/src/lib/libcrypto/asn1/tasn_enc.c
@@ -61,6 +61,7 @@
#include <openssl/asn1.h>
#include <openssl/asn1t.h>
+#include <openssl/err.h>
#include <openssl/objects.h>
static int asn1_i2d_ex_primitive(ASN1_VALUE **pval, unsigned char **out,
@@ -152,9 +153,27 @@ ASN1_item_ex_i2d(ASN1_VALUE **pval, unsigned char **out, const ASN1_ITEM *it,
break;
case ASN1_ITYPE_MSTRING:
+ /*
+ * It never makes sense for multi-strings to have implicit
+ * tagging, so if tag != -1, then this looks like an error in
+ * the template.
+ */
+ if (tag != -1) {
+ ASN1error(ASN1_R_BAD_TEMPLATE);
+ return 0;
+ }
return asn1_i2d_ex_primitive(pval, out, it, -1, aclass);
case ASN1_ITYPE_CHOICE:
+ /*
+ * It never makes sense for CHOICE types to have implicit
+ * tagging, so if tag != -1, then this looks like an error in
+ * the template.
+ */
+ if (tag != -1) {
+ ASN1error(ASN1_R_BAD_TEMPLATE);
+ return 0;
+ }
if (asn1_cb && !asn1_cb(ASN1_OP_I2D_PRE, pval, it, NULL))
return 0;
i = asn1_get_choice_selector(pval, it);
diff --git a/src/lib/libcrypto/x509v3/v3_genn.c b/src/lib/libcrypto/x509v3/v3_genn.c
index 848006acf4..dadf6f1e40 100644
--- a/src/lib/libcrypto/x509v3/v3_genn.c
+++ b/src/lib/libcrypto/x509v3/v3_genn.c
@@ -117,16 +117,17 @@ OTHERNAME_free(OTHERNAME *a)
ASN1_item_free((ASN1_VALUE *)a, &OTHERNAME_it);
}
+/* Uses explicit tagging since DIRECTORYSTRING is a CHOICE type */
static const ASN1_TEMPLATE EDIPARTYNAME_seq_tt[] = {
{
- .flags = ASN1_TFLG_IMPLICIT | ASN1_TFLG_OPTIONAL,
+ .flags = ASN1_TFLG_EXPLICIT | ASN1_TFLG_OPTIONAL,
.tag = 0,
.offset = offsetof(EDIPARTYNAME, nameAssigner),
.field_name = "nameAssigner",
.item = &DIRECTORYSTRING_it,
},
{
- .flags = ASN1_TFLG_IMPLICIT | ASN1_TFLG_OPTIONAL,
+ .flags = ASN1_TFLG_EXPLICIT,
.tag = 1,
.offset = offsetof(EDIPARTYNAME, partyName),
.field_name = "partyName",
@@ -324,6 +325,37 @@ GENERAL_NAME_dup(GENERAL_NAME *a)
return ASN1_item_dup(&GENERAL_NAME_it, a);
}
+static int
+EDIPARTYNAME_cmp(const EDIPARTYNAME *a, const EDIPARTYNAME *b)
+{
+ int res;
+
+ /*
+ * Shouldn't be possible in a valid GENERAL_NAME, but we handle it
+ * anyway. OTHERNAME_cmp treats NULL != NULL, so we do the same here.
+ */
+ if (a == NULL || b == NULL)
+ return -1;
+ if (a->nameAssigner == NULL && b->nameAssigner != NULL)
+ return -1;
+ if (a->nameAssigner != NULL && b->nameAssigner == NULL)
+ return 1;
+ /* If we get here, both have nameAssigner set or both unset. */
+ if (a->nameAssigner != NULL) {
+ res = ASN1_STRING_cmp(a->nameAssigner, b->nameAssigner);
+ if (res != 0)
+ return res;
+ }
+ /*
+ * partyName is required, so these should never be NULL. We treat it in
+ * the same way as the a == NULL || b == NULL case above.
+ */
+ if (a->partyName == NULL || b->partyName == NULL)
+ return -1;
+
+ return ASN1_STRING_cmp(a->partyName, b->partyName);
+}
+
/* Returns 0 if they are equal, != 0 otherwise. */
int
GENERAL_NAME_cmp(GENERAL_NAME *a, GENERAL_NAME *b)
@@ -334,8 +366,11 @@ GENERAL_NAME_cmp(GENERAL_NAME *a, GENERAL_NAME *b)
return -1;
switch (a->type) {
case GEN_X400:
+ result = ASN1_TYPE_cmp(a->d.x400Address, b->d.x400Address);
+ break;
+
case GEN_EDIPARTY:
- result = ASN1_TYPE_cmp(a->d.other, b->d.other);
+ result = EDIPARTYNAME_cmp(a->d.ediPartyName, b->d.ediPartyName);
break;
case GEN_OTHERNAME:
@@ -384,8 +419,11 @@ GENERAL_NAME_set0_value(GENERAL_NAME *a, int type, void *value)
{
switch (type) {
case GEN_X400:
+ a->d.x400Address = value;
+ break;
+
case GEN_EDIPARTY:
- a->d.other = value;
+ a->d.ediPartyName = value;
break;
case GEN_OTHERNAME:
@@ -420,8 +458,10 @@ GENERAL_NAME_get0_value(GENERAL_NAME *a, int *ptype)
*ptype = a->type;
switch (a->type) {
case GEN_X400:
+ return a->d.x400Address;
+
case GEN_EDIPARTY:
- return a->d.other;
+ return a->d.ediPartyName;
case GEN_OTHERNAME:
return a->d.otherName;

67
0089-CVE-2021-3712.patch Normal file
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@ -0,0 +1,67 @@
From 89d74f9b9c8c0b042e81aecb6c286253a51659d8 Mon Sep 17 00:00:00 2001
From: benno <>
Date: Fri, 20 Aug 2021 19:54:16 +0000
Subject: [PATCH] In LibreSSL, printing a certificate can result in a crash in
X509_CERT_AUX_print().
Commit in -current:
CVSROOT: /cvs
Module name: src
Changes by: schwarze@cvs.openbsd.org 2021/07/10 11:45:16
Modified files:
lib/libcrypto/asn1: t_x509a.c
Log message:
Fix a read buffer overrun in X509_CERT_AUX_print(3),
which by implication also affects X509_print(3).
The ASN1_STRING_get0_data(3) manual explitely cautions the reader
that the data is not necessarily NUL-terminated, and the function
X509_alias_set1(3) does not sanitize the data passed into it in
any way either, so we must assume the alias->data field is merely
a byte array and not necessarily a string in the sense of the C
language.
I found this bug while writing manual pages for these functions.
OK tb@
As an aside, note that the function still produces incomplete and
misleading results when the data contains a NUL byte in the middle
and that error handling is consistently absent throughout, even
though the function provides an "int" return value obviously intended
to be 1 for success and 0 for failure, and even though this function
is called by another function that also wants to return 1 for success
and 0 for failure and even does so in many of its code paths, though
not in others. But let's stay focussed. Many things would be nice
to have in the wide wild world, but a buffer overflow must not be
allowed to remain in our backyard.
This is patches/6.8/common/029_x509.patch.sig
---
src/lib/libcrypto/asn1/t_x509a.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/src/lib/libcrypto/asn1/t_x509a.c b/src/lib/libcrypto/asn1/t_x509a.c
index fd68211b84..173465b295 100644
--- a/src/lib/libcrypto/asn1/t_x509a.c
+++ b/src/lib/libcrypto/asn1/t_x509a.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: t_x509a.c,v 1.8 2014/07/11 08:44:47 jsing Exp $ */
+/* $OpenBSD: t_x509a.c,v 1.8.18.1 2021/08/20 19:54:16 benno Exp $ */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
* project 1999.
*/
@@ -105,8 +105,8 @@ X509_CERT_AUX_print(BIO *out, X509_CERT_AUX *aux, int indent)
} else
BIO_printf(out, "%*sNo Rejected Uses.\n", indent, "");
if (aux->alias)
- BIO_printf(out, "%*sAlias: %s\n", indent, "",
- aux->alias->data);
+ BIO_printf(out, "%*sAlias: %.*s\n", indent, "",
+ aux->alias->length, aux->alias->data);
if (aux->keyid) {
BIO_printf(out, "%*sKey Id: ", indent, "");
for (i = 0; i < aux->keyid->length; i++)

29
libressl.spec
View file

@ -76,7 +76,11 @@
Summary: LibreSSL utils and libs coexisting with OpenSSL
Name: libressl
Version: 3.2.0
<<<<<<< HEAD
Release: 4
=======
Release: 8
>>>>>>> eefcab4b5314a0da4734f85dda5c100fc98fbcbd
# The code is distributed under ISC license except of original OpenSSL code
License: ISC and BSD-like
Group: System/Base
@ -199,6 +203,19 @@ Patch0084: 0084-ssl-drop-mac_flags-field.patch
Patch0085: 0085-ssl-support-IV-increments-for-GOST-CTR-OMAC-ciphersu.patch
Patch0086: 0086-kdftree-add-support-for-TLSTREE-rekeying-algorithm.patch
Patch0087: 0087-ssl-add-support-for-TLSTREE-rekeying.patch
# https://www.opennet.ru/opennews/art.shtml?num=54233
# https://github.com/libressl-portable/openbsd/commit/f22d7684aed13a9ae9ea6554b7a3e52fdfa4f193
# From LibreSSL 3.2.3
Patch0088: 0088-CVE-2020-1971.patch
# https://www.opennet.ru/opennews/art.shtml?num=55683
# https://github.com/libressl-portable/openbsd/commit/89d74f9b9c8c0b042e81aecb6c286253a51659d8
# From LibreSSL 3.2.6
Patch0089: 0089-CVE-2021-3712.patch
# TODO:
# https://www.opennet.ru/opennews/art.shtml?num=54774
# https://github.com/libressl-portable/openbsd/commit/5f00b800749f246861e892a17d9012bd25fc06ba (LibreSSL 3.2.5)
# Code is different in our version, investigation if backport is required is required.
# Patches for portable, from lumag@
# ( for i in *PORTABLE*.patch ; do echo Patch$(echo $i | awk -F '-' '{print $2}'): $i ; done ) | sed -e 's,^Patch0,Patch2,g' | sort -h
@ -217,7 +234,7 @@ Patch2100: PORTABLE-0100-fixup-build.patch
# versioning their symbols will or may allow them to coexist
Patch2200: PORTABLE-2200-SUSE-extra-symver.patch
# From https://www.mitchr.me/SS/exampleCode/openssl.html
# From https://www.mitchr.me/SS/exampleCode/openssl.html
Source20: test.c
Source22: test2.c
# From import/openssl, originates from Fedora
@ -306,7 +323,7 @@ Provides: %{mklibname ssl_libressl -d} = %{EVRD}
# devel(libfoo) are RPM_VENDOR_MANDRIVA-specific in RPM 5
# TODO: probably no real need in emulating devel(libfoo)
%if 0%{?mdvver}
%if %{?_lib} == "lib64"
%if "%{?_lib}" == "lib64"
%define b64 (64bit)
%else
%define b64 %{nil}
@ -366,6 +383,9 @@ Provides: nc = %{EVRD}
# the default candidate to be installed as "netcat".
%if %{mdvver} > 201610
Provides: netcat = %{EVRD}
# other netcats were removed due to their upstreams being dead
Obsoletes: netcat-gnu < 0.7.2
Obsoletes: netcat-traditional < 111
%else
# keep old default in rosa2016.1
Provides: netcat = 1.0
@ -427,16 +447,17 @@ sh -x update.sh
export CFLAGS="$CFLAGS -DX509_CONF_FILE='\"%{_openssldir}/libressl.cnf\"'"
#autoreconf -if #Source21
# static libs are required for tests target in Makefile
cp -fv /usr/share/libtool/config/config.* .
%configure \
--enable-nc \
--enable-static \
--with-openssldir=%{_openssldir}
%make
%make_build
%install
set +f # explicitly enable shell globbing
%makeinstall_std
%make_install
# Some ideas about mans are from ALT Linux spec
install -m 0644 apps/nc/nc.1 %{buildroot}%{_mandir}/man1/nc.1