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Ubuntu Vivid Upstart Privilege Escalation

Posted on 03 March 2015

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Although just reported to Ubuntu, this minor dev-branch issue was already made public. As the launchpad/lkml/... feed-miners should not play all the games alone, and as others may want to learn how beginner errors still make it into packages of quite large distributions, enjoy the power of

for session in /run/user/*/upstart/sessions/*
do
 env $(cat $session) /sbin/initctl emit rotate-logs >/dev/null 2>&1 || true
done

executed as root. See [1]

hd

[1] http://www.halfdog.net/Security/2015/UpstartLogrotationPrivilegeEscalation/

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http://www.halfdog.net/
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