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- fix CVE-2009-4355 - leak in applications incorrectly calling

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CRYPTO_free_all_ex_data() before application exit (#546707)
- upstream fix for future TLS protocol version handling
This commit is contained in:
Tomáš Mráz 2010-01-14 08:57:34 +00:00
parent 7f0747ce73
commit 79249339a7
3 changed files with 88 additions and 3 deletions
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49
openssl-1.0.0-beta4-cve-2009-4355.patch Normal file
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@ -0,0 +1,49 @@
Modify compression code so it frees up structures without using the
ex_data callbacks. This works around a problem where some applications
call CRYPTO_free_all_ex_data() before application exit (e.g. when
restarting) then use compression (e.g. SSL with compression) later.
This results in significant per-connection memory leaks and
has caused some security issues including CVE-2008-1678 and
CVE-2009-4355.
[Steve Henson]
diff -up openssl-1.0.0-beta4/crypto/comp/c_zlib.c.compleak openssl-1.0.0-beta4/crypto/comp/c_zlib.c
--- openssl-1.0.0-beta4/crypto/comp/c_zlib.c.compleak 2008-12-13 18:19:40.000000000 +0100
+++ openssl-1.0.0-beta4/crypto/comp/c_zlib.c 2010-01-13 22:06:20.000000000 +0100
@@ -136,15 +136,6 @@ struct zlib_state
static int zlib_stateful_ex_idx = -1;
-static void zlib_stateful_free_ex_data(void *obj, void *item,
- CRYPTO_EX_DATA *ad, int ind,long argl, void *argp)
- {
- struct zlib_state *state = (struct zlib_state *)item;
- inflateEnd(&state->istream);
- deflateEnd(&state->ostream);
- OPENSSL_free(state);
- }
-
static int zlib_stateful_init(COMP_CTX *ctx)
{
int err;
@@ -188,6 +179,12 @@ static int zlib_stateful_init(COMP_CTX *
static void zlib_stateful_finish(COMP_CTX *ctx)
{
+ struct zlib_state *state =
+ (struct zlib_state *)CRYPTO_get_ex_data(&ctx->ex_data,
+ zlib_stateful_ex_idx);
+ inflateEnd(&state->istream);
+ deflateEnd(&state->ostream);
+ OPENSSL_free(state);
CRYPTO_free_ex_data(CRYPTO_EX_INDEX_COMP,ctx,&ctx->ex_data);
}
@@ -402,7 +399,7 @@ COMP_METHOD *COMP_zlib(void)
if (zlib_stateful_ex_idx == -1)
zlib_stateful_ex_idx =
CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_COMP,
- 0,NULL,NULL,NULL,zlib_stateful_free_ex_data);
+ 0,NULL,NULL,NULL,NULL);
CRYPTO_w_unlock(CRYPTO_LOCK_COMP);
if (zlib_stateful_ex_idx == -1)
goto err;

27
openssl-1.0.0-beta4-tlsver.patch Normal file
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@ -0,0 +1,27 @@
Fix handling of future TLS versions.
diff -up openssl-1.0.0-beta4/ssl/s23_srvr.c.tlsver openssl-1.0.0-beta4/ssl/s23_srvr.c
--- openssl-1.0.0-beta4/ssl/s23_srvr.c.tlsver 2010-01-12 22:20:15.000000000 +0100
+++ openssl-1.0.0-beta4/ssl/s23_srvr.c 2010-01-13 22:02:47.000000000 +0100
@@ -315,7 +315,7 @@ int ssl23_get_client_hello(SSL *s)
(p[1] == SSL3_VERSION_MAJOR) &&
(p[5] == SSL3_MT_CLIENT_HELLO) &&
((p[3] == 0 && p[4] < 5 /* silly record length? */)
- || (p[9] == p[1])))
+ || (p[9] >= p[1])))
{
/*
* SSLv3 or tls1 header
@@ -339,6 +339,13 @@ int ssl23_get_client_hello(SSL *s)
v[1] = TLS1_VERSION_MINOR;
#endif
}
+ /* if major version number > 3 set minor to a value
+ * which will use the highest version 3 we support.
+ * If TLS 2.0 ever appears we will need to revise
+ * this....
+ */
+ else if (p[9] > SSL3_VERSION_MAJOR)
+ v[1]=0xff;
else
v[1]=p[10]; /* minor version according to client_version */
if (v[1] >= TLS1_VERSION_MINOR)

15
openssl.spec
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@ -23,7 +23,7 @@
Summary: A general purpose cryptography library with TLS implementation
Name: openssl
Version: 1.0.0
Release: 0.18.%{beta}%{?dist}
Release: 0.19.%{beta}%{?dist}
# We remove certain patented algorithms from the openssl source tarball
# with the hobble-openssl script which is included below.
Source: openssl-%{version}-%{beta}-usa.tar.bz2
@ -73,6 +73,8 @@ Patch66: openssl-1.0.0-beta4-backports2.patch
Patch67: openssl-1.0.0-beta4-reneg-scsv.patch
Patch68: openssl-1.0.0-beta4-tls-comp.patch
Patch69: openssl-1.0.0-beta4-aesni.patch
Patch70: openssl-1.0.0-beta4-tlsver.patch
Patch71: openssl-1.0.0-beta4-cve-2009-4355.patch
License: OpenSSL
Group: System Environment/Libraries
@ -162,6 +164,8 @@ from other formats to the formats used by the OpenSSL toolkit.
%patch67 -p1 -b .scsv
%patch68 -p1 -b .tls-comp
%patch69 -p1 -b .aesni
%patch70 -p1 -b .tlsver
%patch71 -p1 -b .compleak
# Modify the various perl scripts to reference perl in the right location.
perl util/perlpath.pl `dirname %{__perl}`
@ -410,6 +414,11 @@ rm -rf $RPM_BUILD_ROOT/%{_libdir}/fipscanister.*
%postun -p /sbin/ldconfig
%changelog
* Thu Jan 14 2010 Tomas Mraz <tmraz@redhat.com> 1.0.0-0.19.beta4
- fix CVE-2009-4355 - leak in applications incorrectly calling
CRYPTO_free_all_ex_data() before application exit (#546707)
- upstream fix for future TLS protocol version handling
* Wed Jan 13 2010 Tomas Mraz <tmraz@redhat.com> 1.0.0-0.18.beta4
- add support for Intel AES-NI
@ -543,7 +552,7 @@ rm -rf $RPM_BUILD_ROOT/%{_libdir}/fipscanister.*
- temporarily provide symlink to old soname to make it possible to rebuild
the dependent packages in rawhide
- add eap-fast support (#428181)
- add possibility to disable zlib by setting
- add possibility to disable zlib by setting
- add fips mode support for testing purposes
- do not null dereference on some invalid smime files
- add buildrequires pkgconfig (#479493)
@ -750,7 +759,7 @@ rm -rf $RPM_BUILD_ROOT/%{_libdir}/fipscanister.*
- upgrade to new upstream version (no soname bump needed)
- disable thread test - it was testing the backport of the
RSA blinding - no longer needed
- added support for changing serial number to
- added support for changing serial number to
Makefile.certificate (#151188)
- make ca-bundle.crt a config file (#118903)