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fix CVE-2020-26571

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zou_lin77 2021-01-23 10:22:25 +08:00
parent 06b016147b
commit d71c6adbce
2 changed files with 49 additions and 1 deletions
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44
backport-CVE-2020-26571-fixed-invalid-read.patch Normal file
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@ -0,0 +1,44 @@
From ed55fcd2996930bf58b9bb57e9ba7b1f3a753c43 Mon Sep 17 00:00:00 2001
From: Frank Morgner <frankmorgner@gmail.com>
Date: Mon, 18 May 2020 17:25:32 +0200
Subject: [PATCH] fixed invalid read
fixes https://oss-fuzz.com/testcase-detail/5765246676631552
---
src/libopensc/pkcs15-gemsafeGPK.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/src/libopensc/pkcs15-gemsafeGPK.c b/src/libopensc/pkcs15-gemsafeGPK.c
index e13f3b8798..4b80daf2a1 100644
--- a/src/libopensc/pkcs15-gemsafeGPK.c
+++ b/src/libopensc/pkcs15-gemsafeGPK.c
@@ -205,7 +205,7 @@ static int sc_pkcs15emu_gemsafeGPK_init(sc_pkcs15_card_t *p15card)
u8 sysrec[7];
int num_keyinfo = 0;
- keyinfo kinfo[8]; /* will loook for 8 keys */
+ keyinfo kinfo[9]; /* will look for 9 keys */
u8 modulus_buf[ 1 + 1024 / 8]; /* tag+modulus */
u8 *cp;
char buf[256];
@@ -255,9 +255,9 @@ static int sc_pkcs15emu_gemsafeGPK_init(sc_pkcs15_card_t *p15card)
/* There may be more then one key in the directory. */
/* we need to find them so we can associate them with the */
- /* the certificate. The files are 0007 to 000f */
+ /* the certificate. The files are 0007 to 000F */
- for (i = 7; i < 16; i++) {
+ for (i = 0x7; i <= 0xF; i++) {
path.value[0] = 0x00;
path.value[1] = i;
path.len = 2;
@@ -297,7 +297,7 @@ static int sc_pkcs15emu_gemsafeGPK_init(sc_pkcs15_card_t *p15card)
while (j--)
*cp++ = modulus_buf[j + 1];
num_keyinfo++;
- }
+ }
/* Get the gemsafe data with the cert */
sc_format_path("3F000200004", &path);

6
opensc.spec
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@ -3,7 +3,7 @@
Name: opensc
Version: 0.20.0
Release: 5
Release: 6
License: LGPLv2.1+
Summary: Smart card library and applications
URL: https://github.com/OpenSC/OpenSC/wiki
@ -11,6 +11,7 @@ Source0: https://github.com/OpenSC/OpenSC/releases/download/%{version}/%
Patch0: myeid-fixed-memory-leak.patch
Patch1: backport-CVE-2020-26570-Heap-buffer-overflow-WRITE.patch
Patch2: backport-CVE-2020-26571-fixed-invalid-read.patch
BuildRequires: openssl-devel pcsc-lite-devel bash-completion docbook-style-xsl readline-devel
BuildRequires: desktop-file-utils /usr/bin/xsltproc autoconf automake libtool gcc
@ -134,6 +135,9 @@ make check
%{_sysconfdir}/xdg/autostart/pkcs11-register.desktop
%changelog
* Sat Jan 23 2021 zoulin <zoulin13@huawei.com> - 0.20.0-6
- fix CVE-2020-26571
* Thu Dec 31 2020 yangzhuangzhuang <yangzhuangzhuang1@huawei.com> - 0.20.0-5
- fix CVE-2020-26570