opensc: fix CVE-2023-2977

Signed-off-by: Lee Chee Yang <chee.yang.lee@intel.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

1 files changed, 54 insertions, 0 deletions

diff --git a/meta-oe/recipes-support/opensc/files/CVE-2023-2977.patch b/meta-oe/recipes-support/opensc/files/CVE-2023-2977.patch
new file mode 100644
index 0000000000..165fc316bf
--- /dev/null
+++ b/meta-oe/recipes-support/opensc/files/CVE-2023-2977.patch
@@ -0,0 +1,54 @@
+CVE: CVE-2023-2977
+Upstream-Status: Backport [ https://github.com/OpenSC/OpenSC/commit/81944d1529202bd28359bede57c0a15deb65ba8a ]
+Signed-off-by: Lee Chee Yang <chee.yang.lee@intel.com>
+
+
+From 81944d1529202bd28359bede57c0a15deb65ba8a Mon Sep 17 00:00:00 2001
+From: fullwaywang <fullwaywang@tencent.com>
+Date: Mon, 29 May 2023 10:38:48 +0800
+Subject: [PATCH] pkcs15init: correct left length calculation to fix buffer
+ overrun bug. Fixes #2785
+
+---
+ src/pkcs15init/pkcs15-cardos.c | 10 +++++-----
+ 1 file changed, 5 insertions(+), 5 deletions(-)
+
+diff --git a/src/pkcs15init/pkcs15-cardos.c b/src/pkcs15init/pkcs15-cardos.c
+index 9715cf390f..f41f73c349 100644
+--- a/src/pkcs15init/pkcs15-cardos.c
++++ b/src/pkcs15init/pkcs15-cardos.c
+@@ -872,7 +872,7 @@ static int cardos_have_verifyrc_package(sc_card_t *card)
+        sc_apdu_t apdu;
+         u8        rbuf[SC_MAX_APDU_BUFFER_SIZE];
+         int       r;
+-       const u8  *p = rbuf, *q;
++       const u8  *p = rbuf, *q, *pp;
+        size_t    len, tlen = 0, ilen = 0;
+ 
+        sc_format_apdu(card, &apdu, SC_APDU_CASE_2_SHORT, 0xca, 0x01, 0x88);
+@@ -888,13 +888,13 @@ static int cardos_have_verifyrc_package(sc_card_t *card)
+                return 0;
+ 
+        while (len != 0) {
+-               p = sc_asn1_find_tag(card->ctx, p, len, 0xe1, &tlen);
+-               if (p == NULL)
++               pp = sc_asn1_find_tag(card->ctx, p, len, 0xe1, &tlen);
++               if (pp == NULL)
+                        return 0;
+                if (card->type == SC_CARD_TYPE_CARDOS_M4_3)     {
+                        /* the verifyRC package on CardOS 4.3B use Manufacturer ID 0x01 */
+                        /* and Package Number 0x07                                      */
+-                       q = sc_asn1_find_tag(card->ctx, p, tlen, 0x01, &ilen);
++                       q = sc_asn1_find_tag(card->ctx, pp, tlen, 0x01, &ilen);
+                        if (q == NULL || ilen != 4)
+                                return 0;
+                        if (q[0] == 0x07)
+@@ -902,7 +902,7 @@ static int cardos_have_verifyrc_package(sc_card_t *card)
+                } else if (card->type == SC_CARD_TYPE_CARDOS_M4_4)      {
+                        /* the verifyRC package on CardOS 4.4 use Manufacturer ID 0x03  */
+                        /* and Package Number 0x02                                      */
+-                       q = sc_asn1_find_tag(card->ctx, p, tlen, 0x03, &ilen);
++                       q = sc_asn1_find_tag(card->ctx, pp, tlen, 0x03, &ilen);
+                        if (q == NULL || ilen != 4)
+                                return 0;
+                        if (q[0] == 0x02)