opensc: CVE-2019-19479 CVE-2019-19480

Security Advisory

References
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19479
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19480

Signed-off-by: Wang Mingyu <wangmy@cn.fujitsu.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-oe/recipes-support/opensc/opensc/CVE-2019-19479.patch

@@ -0,0 +1,30 @@
+From c3f23b836e5a1766c36617fe1da30d22f7b63de2 Mon Sep 17 00:00:00 2001
+From: Frank Morgner <frankmorgner@gmail.com>
+Date: Sun, 3 Nov 2019 04:45:28 +0100
+Subject: [PATCH] fixed  UNKNOWN READ
+
+Upstream-Status: Accepted <or Backport>
+CVE: CVE-2019-19479 
+   
+Reported by OSS-Fuzz
+https://oss-fuzz.com/testcase-detail/5681169970757632
+
+Reference to upstream patch:
+https://github.com/OpenSC/OpenSC/commit/c3f23b836e5a1766c36617fe1da30d22f7b63de2
+---
+ src/libopensc/card-setcos.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/libopensc/card-setcos.c b/src/libopensc/card-setcos.c
+index 4cf328ad6a..1b4e8f3e23 100644
+--- a/src/libopensc/card-setcos.c
++++ b/src/libopensc/card-setcos.c
+@@ -868,7 +868,7 @@ static void parse_sec_attr_44(sc_file_t *file, const u8 *buf, size_t len)
+ 			}
+ 
+ 			/* Encryption key present ? */
+-			iPinCount = iACLen - 1;		
++			iPinCount = iACLen > 0 ? iACLen - 1 : 0;
+ 
+ 			if (buf[iOffset] & 0x20) {
+ 				int iSC;

meta-oe/recipes-support/opensc/opensc/CVE-2019-19480.patch

@@ -0,0 +1,34 @@
+From 6ce6152284c47ba9b1d4fe8ff9d2e6a3f5ee02c7 Mon Sep 17 00:00:00 2001
+From: Jakub Jelen <jjelen@redhat.com>
+Date: Wed, 23 Oct 2019 09:22:44 +0200
+Subject: [PATCH] pkcs15-prkey: Simplify cleaning memory after failure
+
+https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=18478
+
+Upstream-Status: Accepted
+CVE: CVE-2019-19480
+
+Reference to upstream patch:
+https://github.com/OpenSC/OpenSC/commit/6ce6152284c47ba9b1d4fe8ff9d2e6a3f5ee02c7
+---
+ src/libopensc/pkcs15-prkey.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/src/libopensc/pkcs15-prkey.c b/src/libopensc/pkcs15-prkey.c
+index d3eee983..4b249582 100644
+--- a/src/libopensc/pkcs15-prkey.c
++++ b/src/libopensc/pkcs15-prkey.c
+@@ -258,6 +258,10 @@ int sc_pkcs15_decode_prkdf_entry(struct sc_pkcs15_card *p15card,
+ 	memset(gostr3410_params, 0, sizeof(gostr3410_params));
+ 
+ 	r = sc_asn1_decode_choice(ctx, asn1_prkey, *buf, *buflen, buf, buflen);
++	if (r < 0) {
++	        /* This might have allocated something. If so, clear it now */
++	        free(info.subject.value);
++        }
+ 	if (r == SC_ERROR_ASN1_END_OF_CONTENTS)
+ 		return r;
+ 	LOG_TEST_RET(ctx, r, "PrKey DF ASN.1 decoding failed");
+-- 
+2.17.1
+

meta-oe/recipes-support/opensc/opensc_0.19.0.bb

@@ -15,6 +15,8 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=7fbc338309ac38fefcd64b04bb903e34"
 SRCREV = "f1691fc91fc113191c3a8aaf5facd6983334ec47"
 SRC_URI = "git://github.com/OpenSC/OpenSC \
            file://0001-Remove-redundant-logging.patch \
+           file://CVE-2019-19479.patch \
+           file://CVE-2019-19480.patch \
           "
 DEPENDS = "openct pcsc-lite virtual/libiconv openssl"