Vulnerability 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 Score
7.8
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Freedesktop | Polkit | All versions |
| Redhat | Enterprise Linux | 6.0 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2016/02/26/3Mailing ListThird Party Advisory
- https://access.redhat.com/security/cve/cve-2016-2568Third Party Advisory
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=816062Mailing ListThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1300746Issue TrackingThird Party Advisory
- https://ubuntu.com/security/CVE-2016-2568Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/02/26/3Mailing ListThird Party Advisory
- https://access.redhat.com/security/cve/cve-2016-2568Third Party Advisory
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=816062Mailing ListThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1300746Issue TrackingThird Party Advisory
- https://ubuntu.com/security/CVE-2016-2568Third Party Advisory
FAQ
What is CVE-2016-2568?
CVE-2016-2568 is a vulnerability with a CVSS score of 7.8 (HIGH). 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.
How severe is CVE-2016-2568?
CVE-2016-2568 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2016-2568?
Check the references section above for vendor advisories and patch information. Affected products include: Freedesktop Polkit, Redhat Enterprise Linux.