CVE-2016-2568 — Improper Encoding or Escaping of Output in Policykit-1

CWE-116 — Improper Encoding or Escaping of OutputCWE-270 — Privilege Context Switching Error10 documents8 sources
Severity
7.8HIGHNVD
EPSS
0.1%
top 67.36%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
Debian Policykit-1Redhat Enterprise LinuxMsrc Azl3 Polkit 123-1 ON Azure Linux 3.0+2 more
Timeline
PublishedFeb 13
Latest updateMay 13

Description

pkexec, when used with --user nonpriv, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:HExploitability: 1.1 | Impact: 6.0

Affected Packages4 packages

▶debiandebian/policykit-1< policykit-1 123-1 (forky)

Also affects: Enterprise Linux 6.0, 7.0

🔴Vulnerability Details

2
GHSA
GHSA-8vgc-x7hv-3g84: pkexec, when used with --user nonpriv, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to↗2022-05-13
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OSV
CVE-2016-2568: pkexec, when used with --user nonpriv, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to↗2017-02-13
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📋Vendor Advisories

3
Microsoft
pkexec, when used with --user nonpriv, allows local users to escape to the parent session↗2017-02-21
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Red Hat
polkit: Program run via pkexec as unprivileged user can escape to parent session via TIOCSTI ioctl↗2016-01-19
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Debian
CVE-2016-2568: policykit-1 - pkexec, when used with --user nonpriv, allows local users to escape to the paren...↗2016
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💬Community

3
Bugzilla
CVE-2016-2781 coreutils: Non-privileged session can escape to the parent session in chroot↗2016-02-29
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Bugzilla
CVE-2016-2568 polkit: Program run via pkexec as unprivileged user can escape to parent session via TIOCSTI ioctl↗2016-01-21
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Bugzilla
CVE-2016-2568 polkit: Program run via pkexec as unprivileged user can escape to parent session via TIOCSTI ioctl [fedora-all]↗2016-01-21
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