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annotate debian/dropbear.postrm @ 1861:2b3a8026a6ce

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Add re-exec for server This allows ASLR to re-randomize the address space for every connection, preventing some vulnerabilities from being exploitable by repeated probing. Overhead (memory and time) is yet to be confirmed. At present this is only enabled on Linux. Other BSD platforms with fexecve() would probably also work though have not been tested.
author Matt Johnston <matt@ucc.asn.au>
date Sun, 30 Jan 2022 10:14:56 +0800
parents b0316ce64e4b
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
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1 #! /bin/sh
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
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2 set -e
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
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3
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
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4 test "$1" = 'purge' || exit 0
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
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5 if test -e /etc/dropbear; then
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
Matt Johnston <matt@ucc.asn.au>
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6 rm -f /etc/dropbear/dropbear_rsa_host_key
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
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7 rm -f /etc/dropbear/dropbear_dss_host_key
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
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8 rmdir --ignore-fail-on-non-empty /etc/dropbear
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
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9 fi
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
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10 update-rc.d dropbear remove >/dev/null
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
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11 rm -f /etc/default/dropbear
b0316ce64e4b Merging in the changes from 0.41-0.43 main Dropbear tree
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12 rm -rf /etc/dropbear/supervise /etc/dropbear/log/supervise