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Message-Id: <20170417060706.28674-2-matt@nmatt.com>
Date: Mon, 17 Apr 2017 02:07:03 -0400
From: Matt Brown <matt@...tt.com>
To: jmorris@...ei.org,
gregkh@...uxfoundation.org,
akpm@...ux-foundation.org
Cc: linux-security-module@...r.kernel.org,
linux-kernel@...r.kernel.org,
kernel-hardening@...ts.openwall.com,
Matt Brown <matt@...tt.com>
Subject: [PATCH 1/4] added SECURITY_TIOCSTI_RESTRICT kernel config
adding the kernel config SECURITY_TIOCSTI_RESTRICT in order to allow
the user to restrict unprivileged command injection using TIOCSTI
tty ioctls
Signed-off-by: Matt Brown <matt@...tt.com>
---
security/Kconfig | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/security/Kconfig b/security/Kconfig
index 3ff1bf9..d757bcb 100644
--- a/security/Kconfig
+++ b/security/Kconfig
@@ -18,6 +18,18 @@ config SECURITY_DMESG_RESTRICT
If you are unsure how to answer this question, answer N.
+config SECURITY_TIOCSTI_RESTRICT
+ bool "Restrict unprivileged use of tiocsti command injection"
+ default n
+ help
+ This enforces restrictions on unprivileged users injecting commands
+ into other processes in the same tty session using the TIOCSTI ioctl
+
+ If this option is not selected, no restrictions will be enforced
+ unless the tiocsti_restrict sysctl is explicitly set to (1).
+
+ If you are unsure how to answer this question, answer N.
+
config SECURITY
bool "Enable different security models"
depends on SYSFS
--
2.10.2
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