forked from pool/grub2
bc2335ce74
- Add 0001-Fix-security-issue-when-reading-username-and-passwor.patch Fix for CVE-2015-8370. OBS-URL: https://build.opensuse.org/request/show/349095 OBS-URL: https://build.opensuse.org/package/show/Base:System/grub2?expand=0&rev=193
55 lines
1.3 KiB
Diff
55 lines
1.3 KiB
Diff
From 451d80e52d851432e109771bb8febafca7a5f1f2 Mon Sep 17 00:00:00 2001
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From: Hector Marco-Gisbert <hecmargi@upv.es>
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Date: Wed, 16 Dec 2015 07:57:18 +0300
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Subject: [PATCH] Fix security issue when reading username and password
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This patch fixes two integer underflows at:
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* grub-core/lib/crypto.c
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* grub-core/normal/auth.c
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CVE-2015-8370
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Signed-off-by: Hector Marco-Gisbert <hecmargi@upv.es>
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Signed-off-by: Ismael Ripoll-Ripoll <iripoll@disca.upv.es>
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Also-By: Andrey Borzenkov <arvidjaar@gmail.com>
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---
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grub-core/lib/crypto.c | 3 ++-
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grub-core/normal/auth.c | 7 +++++--
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2 files changed, 7 insertions(+), 3 deletions(-)
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diff --git a/grub-core/lib/crypto.c b/grub-core/lib/crypto.c
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index 010e550..683a8aa 100644
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--- a/grub-core/lib/crypto.c
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+++ b/grub-core/lib/crypto.c
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@@ -470,7 +470,8 @@ grub_password_get (char buf[], unsigned buf_size)
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if (key == '\b')
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{
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- cur_len--;
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+ if (cur_len)
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+ cur_len--;
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continue;
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}
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diff --git a/grub-core/normal/auth.c b/grub-core/normal/auth.c
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index c6bd96e..8615c48 100644
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--- a/grub-core/normal/auth.c
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+++ b/grub-core/normal/auth.c
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@@ -174,8 +174,11 @@ grub_username_get (char buf[], unsigned buf_size)
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if (key == '\b')
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{
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- cur_len--;
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- grub_printf ("\b");
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+ if (cur_len)
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+ {
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+ cur_len--;
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+ grub_printf ("\b");
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+ }
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continue;
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}
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--
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1.9.1
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