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-rw-r--r--meta/recipes-bsp/grub/files/0001-Fix-CVE-2015-8370-Grub2-user-pass-vulnerability.patch50
-rw-r--r--meta/recipes-bsp/grub/grub2.inc1
2 files changed, 51 insertions, 0 deletions
diff --git a/meta/recipes-bsp/grub/files/0001-Fix-CVE-2015-8370-Grub2-user-pass-vulnerability.patch b/meta/recipes-bsp/grub/files/0001-Fix-CVE-2015-8370-Grub2-user-pass-vulnerability.patch
new file mode 100644
index 0000000..9ddd7a6
--- /dev/null
+++ b/meta/recipes-bsp/grub/files/0001-Fix-CVE-2015-8370-Grub2-user-pass-vulnerability.patch
@@ -0,0 +1,50 @@
+Upstream-Status: Accepted
+Signed-off-by: Awais Belal <awais_belal@mentor.com>
+
+From 451d80e52d851432e109771bb8febafca7a5f1f2 Mon Sep 17 00:00:00 2001
+From: Hector Marco-Gisbert <hecmargi@upv.es>
+Date: Wed, 16 Dec 2015 04:57:18 +0000
+Subject: Fix security issue when reading username and password
+
+This patch fixes two integer underflows at:
+ * grub-core/lib/crypto.c
+ * grub-core/normal/auth.c
+
+CVE-2015-8370
+
+Signed-off-by: Hector Marco-Gisbert <hecmargi@upv.es>
+Signed-off-by: Ismael Ripoll-Ripoll <iripoll@disca.upv.es>
+Also-By: Andrey Borzenkov <arvidjaar@gmail.com>
+---
+Index: grub-2.00/grub-core/lib/crypto.c
+===================================================================
+--- grub-2.00.orig/grub-core/lib/crypto.c
++++ grub-2.00/grub-core/lib/crypto.c
+@@ -458,7 +458,8 @@ grub_password_get (char buf[], unsigned
+
+ if (key == '\b')
+ {
+- cur_len--;
++ if (cur_len)
++ cur_len--;
+ continue;
+ }
+
+Index: grub-2.00/grub-core/normal/auth.c
+===================================================================
+--- grub-2.00.orig/grub-core/normal/auth.c
++++ grub-2.00/grub-core/normal/auth.c
+@@ -174,8 +174,11 @@ grub_username_get (char buf[], unsigned
+
+ if (key == '\b')
+ {
+- cur_len--;
+- grub_printf ("\b");
++ if (cur_len)
++ {
++ cur_len--;
++ grub_printf ("\b");
++ }
+ continue;
+ }
+
diff --git a/meta/recipes-bsp/grub/grub2.inc b/meta/recipes-bsp/grub/grub2.inc
index 8e733ec..c281098 100644
--- a/meta/recipes-bsp/grub/grub2.inc
+++ b/meta/recipes-bsp/grub/grub2.inc
@@ -25,6 +25,7 @@ SRC_URI = "ftp://ftp.gnu.org/gnu/grub/grub-${PV}.tar.gz \
file://grub-efi-allow-a-compilation-without-mcmodel-large.patch \
file://grub-efi-fix-with-glibc-2.20.patch \
file://0001-parse_dhcp_vendor-Add-missing-const-qualifiers.patch \
+ file://0001-Fix-CVE-2015-8370-Grub2-user-pass-vulnerability.patch \
"
DEPENDS = "flex-native bison-native xz"
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