High severity · published Feb 13, 2017
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 the terminal's input buffer
7.8
CVSS
0.4%
EPSS
No
On KEV
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:H
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EL
Enterprise Linux · Redhat
6.0; 7.0 · source: NVD
PO
Polkit · Freedesktop
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-2568
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-2568
Mailing List
http://www.openwall.com/lists/oss-security/2016/02/26/3
Third Party Advisory
https://access.redhat.com/security/cve/cve-2016-2568
Mailing List
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=816062
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1300746
Third Party Advisory
https://ubuntu.com/security/CVE-2016-2568
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