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authorAwais Belal <awais_belal@mentor.com>2015-12-23 16:10:34 +0500
committerRichard Purdie <richard.purdie@linuxfoundation.org>2016-01-07 13:40:03 +0000
commit7d0779b0133f253d06740653d8d1b8276dbcab7f (patch)
treee383180cc35fe3de2ee4a07be4f27df965088883 /meta/recipes-bsp/grub/files
parentf95c327cb5ffc9374f84946fc64e840bb3febd23 (diff)
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grub2: Fix CVE-2015-8370
http://git.savannah.gnu.org/cgit/grub.git/commit/?id=451d80e52d851432e109771bb8febafca7a5f1f2 Signed-off-by: Awais Belal <awais_belal@mentor.com> Signed-off-by: Ross Burton <ross.burton@intel.com>
Diffstat (limited to 'meta/recipes-bsp/grub/files')
-rw-r--r--meta/recipes-bsp/grub/files/0001-Fix-CVE-2015-8370-Grub2-user-pass-vulnerability.patch52
1 files changed, 52 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 0000000000..f9252e9c22
--- /dev/null
+++ b/meta/recipes-bsp/grub/files/0001-Fix-CVE-2015-8370-Grub2-user-pass-vulnerability.patch
@@ -0,0 +1,52 @@
+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>
+---
+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;
+ }
+
+--
+cgit v0.9.0.2