Bug 1300746 - (CVE-2016-2568) CVE-2016-2568 polkit: Program run via pkexec as unprivileged user can escape to parent session via TIOCSTI ioctl
CVE-2016-2568 polkit: Program run via pkexec as unprivileged user can escape ...
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
: Security
Depends On: 1299955 1300747
Blocks: 1300748
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Reported: 2016-01-21 10:42 EST by Adam Mariš
Modified: 2017-08-24 08:36 EDT (History)
6 users (show)

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Doc Type: Bug Fix
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Description Adam Mariš 2016-01-21 10:42:31 EST
It was reported that when executing a program via "pkexec --user nonpriv program", the nonpriv session can escape to the parent session by using the TIOCSTI ioctl to push characters into the terminal's input buffer, allowing privilege escalation.

Original bug report (contains reproducer):

Comment 1 Adam Mariš 2016-01-21 10:42:48 EST
Created polkit tracking bugs for this issue:

Affects: fedora-all [bug 1300747]
Comment 2 Federico Manuel Bento 2016-01-26 09:37:03 EST
I'd like to request a CVE for this issue, thanks.
Comment 3 Andrej Nemec 2016-02-26 02:53:05 EST
CVE assignment:


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