Ubuntu.comUB:CVE-2016-2779CVE-2016-2779
7.2 High
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0.0004 Low
EPSS
Percentile
5.1%
runuser in util-linux allows local users to escape to the parent session
via a crafted TIOCSTI ioctl call, which pushes characters to the terminal’s
input buffer.
Bugs
- <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=815922>
- <https://bugzilla.redhat.com/show_bug.cgi?id=1312852>
Notes
| Author | Note |
|---|---|
| mdeslaur | 2.31 introduced a --pty option that can be used |
| eslerm | upstream revereted their patch backporting 2.31’s optional --pty flag has high risk potential |
References
marc.info/?l=util-linux-ng&m=145694736107128&w=2
www.openwall.com/lists/oss-security/2016/02/27/1
github.com/util-linux/util-linux/commit/23f75093264aae5d58d61016cb1a29d8ebdfa157
github.com/util-linux/util-linux/commit/a0a8e9884443601abf9f06b715f2f6bb0820cbad
launchpad.net/bugs/cve/CVE-2016-2779
nvd.nist.gov/vuln/detail/CVE-2016-2779
security-tracker.debian.org/tracker/CVE-2016-2779
www.cve.org/CVERecord?id=CVE-2016-2779
Related
7.2 High
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0.0004 Low
EPSS
Percentile
5.1%