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| author | Armin Kuster <akuster@mvista.com> | 2016-07-16 16:04:12 -0700 |
|---|---|---|
| committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2016-09-23 23:21:43 +0100 |
| commit | 82fe0e8c98244794531f0e24ceb93953fe68dda5 (patch) | |
| tree | 8d119c8c9325473085b022e8a3d8d087a5b48771 /meta | |
| parent | 5781eb9a6e6bf8984b090a488d2a326bf9fafcf8 (diff) | |
| download | openembedded-core-82fe0e8c98244794531f0e24ceb93953fe68dda5.tar.gz openembedded-core-82fe0e8c98244794531f0e24ceb93953fe68dda5.tar.bz2 openembedded-core-82fe0e8c98244794531f0e24ceb93953fe68dda5.zip | |
openssl: Security fix CVE-2016-2178
affects openssl <= 1.0.2h
CVSS v2 Base Score: 2.1 LOW
Signed-off-by: Armin Kuster <akuster@mvista.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
(cherry picked from commit 5b3df0c5e8885ea34f66b41fcf209a9960fbbf5e)
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Diffstat (limited to 'meta')
| -rw-r--r-- | meta/recipes-connectivity/openssl/openssl/CVE-2016-2178.patch | 51 | ||||
| -rw-r--r-- | meta/recipes-connectivity/openssl/openssl_1.0.2h.bb | 1 |
2 files changed, 52 insertions, 0 deletions
diff --git a/meta/recipes-connectivity/openssl/openssl/CVE-2016-2178.patch b/meta/recipes-connectivity/openssl/openssl/CVE-2016-2178.patch new file mode 100644 index 0000000000..27ade4e7d2 --- /dev/null +++ b/meta/recipes-connectivity/openssl/openssl/CVE-2016-2178.patch @@ -0,0 +1,51 @@ +From 399944622df7bd81af62e67ea967c470534090e2 Mon Sep 17 00:00:00 2001 +From: Cesar Pereida <cesar.pereida@aalto.fi> +Date: Mon, 23 May 2016 12:45:25 +0300 +Subject: [PATCH] Fix DSA, preserve BN_FLG_CONSTTIME + +Operations in the DSA signing algorithm should run in constant time in +order to avoid side channel attacks. A flaw in the OpenSSL DSA +implementation means that a non-constant time codepath is followed for +certain operations. This has been demonstrated through a cache-timing +attack to be sufficient for an attacker to recover the private DSA key. + +CVE-2016-2178 + +Reviewed-by: Richard Levitte <levitte@openssl.org> +Reviewed-by: Matt Caswell <matt@openssl.org> + +Upstream-Status: Backport +CVE: CVE-2016-2178 + +Signed-off-by: Armin Kuster <akuster@mvista.com> + +--- + crypto/dsa/dsa_ossl.c | 9 +++++---- + 1 file changed, 5 insertions(+), 4 deletions(-) + +Index: openssl-1.0.2h/crypto/dsa/dsa_ossl.c +=================================================================== +--- openssl-1.0.2h.orig/crypto/dsa/dsa_ossl.c ++++ openssl-1.0.2h/crypto/dsa/dsa_ossl.c +@@ -248,9 +248,6 @@ static int dsa_sign_setup(DSA *dsa, BN_C + if (!BN_rand_range(&k, dsa->q)) + goto err; + while (BN_is_zero(&k)) ; +- if ((dsa->flags & DSA_FLAG_NO_EXP_CONSTTIME) == 0) { +- BN_set_flags(&k, BN_FLG_CONSTTIME); +- } + + if (dsa->flags & DSA_FLAG_CACHE_MONT_P) { + if (!BN_MONT_CTX_set_locked(&dsa->method_mont_p, +@@ -282,6 +279,11 @@ static int dsa_sign_setup(DSA *dsa, BN_C + } else { + K = &k; + } ++ ++ if ((dsa->flags & DSA_FLAG_NO_EXP_CONSTTIME) == 0) { ++ BN_set_flags(K, BN_FLG_CONSTTIME); ++ } ++ + DSA_BN_MOD_EXP(goto err, dsa, r, dsa->g, K, dsa->p, ctx, + dsa->method_mont_p); + if (!BN_mod(r, r, dsa->q, ctx)) diff --git a/meta/recipes-connectivity/openssl/openssl_1.0.2h.bb b/meta/recipes-connectivity/openssl/openssl_1.0.2h.bb index 4135a312c5..07cb0f9e85 100644 --- a/meta/recipes-connectivity/openssl/openssl_1.0.2h.bb +++ b/meta/recipes-connectivity/openssl/openssl_1.0.2h.bb @@ -39,6 +39,7 @@ SRC_URI += "file://configure-targets.patch \ file://ptest_makefile_deps.patch \ file://parallel.patch \ file://CVE-2016-2177.patch \ + file://CVE-2016-2178.patch \ " SRC_URI[md5sum] = "9392e65072ce4b614c1392eefc1f23d0" |