CVE-2016-2568

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Summary

CVECVE-2016-2568
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-02-13 18:59:00 UTC
Updated2025-04-20 01:37:25 UTC
Descriptionpkexec, 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Problem Types: CWE-116 | n/a

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.8HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
2.0[email protected]Primary4.4AV:L/AC:M/Au:N/C:P/I:P/A:P

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:L/AC:M/Au:N/C:P/I:P/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Freedesktop Polkit All All All All
Operating System Redhat Enterprise Linux 6.0 All All All
Operating System Redhat Enterprise Linux 7.0 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
#816062 - policykit-1: CVE-2016-2568: Program run via pkexec as unprivileged user can escape to parent session via TIOCSTI ioctl - Debian Bug report logs af854a3a-2127-422b-91ae-364da2661108 bugs.debian.org Mailing List, Third Party Advisory
CVE-2016-2568 | Ubuntu af854a3a-2127-422b-91ae-364da2661108 ubuntu.com Third Party Advisory
CVE-2016-2568 - Red Hat Customer Portal af854a3a-2127-422b-91ae-364da2661108 access.redhat.com Third Party Advisory
oss-security - Re: CVE Request: pkexec tty hijacking via TIOCSTI ioctl af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Third Party Advisory
1300746 – (CVE-2016-2568) CVE-2016-2568 polkit: Program run via pkexec as unprivileged user can escape to parent session via TIOCSTI ioctl af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 900083 CBL-Mariner Linux Security Update for polkit 0.116
  • 901175 Common Base Linux Mariner (CBL-Mariner) Security Update for polkit (6800)
  • 902994 Common Base Linux Mariner (CBL-Mariner) Security Update for polkit (2698)
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