CVE-2016-2779

Impact:
Moderate
Public Date:
2016-02-26
CWE:
CWE-270
Bugzilla:
1312852: CVE-2016-2779 util-linux: runuser tty hijack via TIOCSTI ioctl
It was found that runuser was vulnerable to TIOCSTI ioctl attacks, allowing the executed program to push characters to its TTY's input buffer. While being executed as a non-privileged user, a specially crafted program could force its parent TTY to enter commands, interpreted by the shell when runuser exits.

Find out more about CVE-2016-2779 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

This issue affects the versions of util-linux as shipped with Red Hat Enterprise Linux 7. Red Hat Product Security has rated this issue as having Moderate security impact. A future update may address this issue. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 6.2
Base Metrics AV:L/AC:H/Au:N/C:C/I:C/A:C
Access Vector Local
Access Complexity High
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete

CVSS v3 metrics

NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.

CVSS3 Base Score 8.6
CVSS3 Base Metrics CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality High
Integrity Impact High
Availability Impact High

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 7 util-linux Will not fix
Red Hat Enterprise Linux 6 util-linux-ng Not affected
Red Hat Enterprise Linux 5 util-linux Not affected

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