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Merge pull request #60 from madaidan/sysrq

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Restrict the SysRq key
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Patrick Schleizer 2020-02-15 10:42:20 +00:00 committed by GitHub
commit a9a1581720
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3
debian/control vendored
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@ -119,6 +119,9 @@ Description: enhances misc security settings
.
* The kernel panics on oopses to prevent it from continuing to run a flawed
process and to deter brute forcing.
.
* Restricts the SysRq key so it can only be used for shutdowns and the
Secure Attention Key.
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* Restricts loading line disciplines to CAP_SYS_MODULE.
.

7
etc/sysctl.d/30_security-misc.conf
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@ -119,6 +119,13 @@ net.ipv4.tcp_timestamps=0
#### meta end
## Only allow the SysRq key to be used for shutdowns and the
## Secure Attention Key (SAK).
##
## https://forums.whonix.org/t/sysrq-magic-sysrq-key/8079/
kernel.sysrq=132
## Restrict loading line disciplines to CAP_SYS_MODULE to prevent
## unprivileged attackers from loading vulnerable line disciplines
## with the TIOCSETD ioctl to exploit them.