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- Log ----------------------------------------------------------------- commit 7403755a939d9315b9b0185229c9cd0110df9fb6 Author: Peter Müller peter.mueller@link38.eu Date: Mon Jan 21 21:43:26 2019 +0100

hide kernel addresses in /proc against privileged users

In order to make local privilege escalation more harder, hide kernel addresses in various /proc files against users with root (or similar) permissions, too.

Common system hardening tools such as lynis recommend this.

Signed-off-by: Peter Müller peter.mueller@ipfire.org Signed-off-by: Michael Tremer michael.tremer@ipfire.org

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Summary of changes: setup/setup.nm | 2 +- setup/sysctl/kernel-hardening.conf | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)

Difference in files: diff --git a/setup/setup.nm b/setup/setup.nm index e79fff10d..0bb936ccb 100644 --- a/setup/setup.nm +++ b/setup/setup.nm @@ -5,7 +5,7 @@

name = setup version = 3.0 -release = 11 +release = 12 arch = noarch

groups = Base Build System/Base diff --git a/setup/sysctl/kernel-hardening.conf b/setup/sysctl/kernel-hardening.conf index 6751bbef6..9bb6e9f45 100644 --- a/setup/sysctl/kernel-hardening.conf +++ b/setup/sysctl/kernel-hardening.conf @@ -1,5 +1,5 @@ # Try to keep kernel address exposures out of various /proc files (kallsyms, modules, etc). -kernel.kptr_restrict = 1 +kernel.kptr_restrict = 2

# Avoid kernel memory address exposures via dmesg. kernel.dmesg_restrict = 1

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