import grub from gentoo

1 files changed, 54 insertions, 0 deletions

diff --git a/sys-boot/grub/files/CVE-2015-8370.patch b/sys-boot/grub/files/CVE-2015-8370.patch
new file mode 100644
index 00000000..69e419ee
--- /dev/null
+++ b/sys-boot/grub/files/CVE-2015-8370.patch
@@ -0,0 +1,54 @@
+From 451d80e52d851432e109771bb8febafca7a5f1f2 Mon Sep 17 00:00:00 2001
+From: Hector Marco-Gisbert <hecmargi@upv.es>
+Date: Wed, 16 Dec 2015 07:57:18 +0300
+Subject: [PATCH] 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>
+---
+ grub-core/lib/crypto.c  | 3 ++-
+ grub-core/normal/auth.c | 7 +++++--
+ 2 files changed, 7 insertions(+), 3 deletions(-)
+
+diff --git a/grub-core/lib/crypto.c b/grub-core/lib/crypto.c
+index 010e550..683a8aa 100644
+--- a/grub-core/lib/crypto.c
++++ b/grub-core/lib/crypto.c
+@@ -470,7 +470,8 @@ grub_password_get (char buf[], unsigned buf_size)
+ 
+       if (key == '\b')
+ 	{
+-	  cur_len--;
++	  if (cur_len)
++	    cur_len--;
+ 	  continue;
+ 	}
+ 
+diff --git a/grub-core/normal/auth.c b/grub-core/normal/auth.c
+index c6bd96e..8615c48 100644
+--- a/grub-core/normal/auth.c
++++ b/grub-core/normal/auth.c
+@@ -174,8 +174,11 @@ grub_username_get (char buf[], unsigned buf_size)
+ 
+       if (key == '\b')
+ 	{
+-	  cur_len--;
+-	  grub_printf ("\b");
++	  if (cur_len)
++	    {
++	      cur_len--;
++	      grub_printf ("\b");
++	    }
+ 	  continue;
+ 	}
+ 
+-- 
+2.6.4
+