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CVE-2016-2781

chroot in GNU coreutils, when used with --userspec, allows local users to escape to the parent...

6.5 MediumFix available

CVE-2016-2781 is a medium vulnerability (CVSS 6.5) in Gnu Coreutils, published February 7, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.43%, the 37th percentile. Fixed in coreutils 9.4-1.

chroot in GNU coreutils, when used with --userspec, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
High
Availability
None

Exploit likelihood

0.43%Down 0.5 points since Feb 4, 2022
90%50%10%1%

What each source reports

CVE List 4.6

chroot in GNU coreutils, when used with --userspec, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.

Record
CVE-2016-2781
CVSS 3.1
4.6 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Weakness
CWE-20
Updated
2026-11-02
EUVDEUVD-2016-3855 4.6

chroot in GNU coreutils, when used with --userspec, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.

Record
EUVD-2016-3855
CVSS 3.1
4.6 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-vf3q-65gx-324p 6.5

chroot in GNU coreutils, when used with --userspec, allows local users to escape to the parent...

chroot in GNU coreutils, when used with --userspec, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.

Record
GHSA-vf3q-65gx-324p
CVSS 3.0
6.5 MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
Weakness
CWE-20
Updated
2026-11-02
NVD 4.6

chroot in GNU coreutils, when used with --userspec, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.

Record
CVE-2016-2781
CVSS 3.1
4.6 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS 3.0
6.5 MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
CVSS 2.0
2.1 LowAV:L/AC:L/Au:N/C:N/I:P/A:N
Weakness
CWE-20
Updated
2026-11-02
OSVAZL-34628 6.5

CVE-2016-2781 affecting package coreutils for versions less than 9.4-1

chroot in GNU coreutils, when used with --userspec, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.

Record
AZL-34628
CVSS 3.0
6.5 MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
Updated
2026-11-02
OSVAZL-6355 6.5

CVE-2016-2781 affecting package coreutils for versions less than 8.32-1

chroot in GNU coreutils, when used with --userspec, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.

Record
AZL-6355
CVSS 3.0
6.5 MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
Updated
2026-11-02
OSV 6.5

chroot in GNU coreutils, when used with --userspec, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.

Record
CVE-2016-2781
CVSS 3.0
6.5 MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
Updated
2026-11-02
OSVDEBIAN-CVE-2016-2781 6.5

chroot in GNU coreutils, when used with --userspec, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.

Record
DEBIAN-CVE-2016-2781
CVSS 3.0
6.5 MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
Updated
2026-11-02
OSVUBUNTU-CVE-2016-2781 4.6

chroot in GNU coreutils, when used with --userspec, allows local users to escape to the parent session via a crafted TIOCSTI ioctl call, which pushes characters to the terminal's input buffer.

Record
UBUNTU-CVE-2016-2781
CVSS 3.1
4.6 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS 3.0
6.5 MediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
coreutils
Azure Linux:3
 before 9.4-1
9.4-1
coreutils
Azure Linux:2
 before 8.32-1
8.32-1
coreutils
Debian:12
 All versions, plus listed versions
9.1-19.10-19.4-19.4-29.4-3
Show 7 moreShow less
9.4-3.19.5-19.6-19.6-29.7-19.7-29.7-3
 None known
coreutils
Debian:13
 before 9.4-1
9.4-1
coreutils
Debian:14
 before 9.4-1
9.4-1
coreutils
Ubuntu:14.04:LTS
 All versions, plus listed versions
8.20-3ubuntu58.21-1ubuntu38.21-1ubuntu48.21-1ubuntu58.21-1ubuntu5.18.21-1ubuntu5.38.21-1ubuntu5.4
 None known
coreutils
Ubuntu:16.04:LTS
 All versions, plus listed versions
8.23-4ubuntu28.25-2ubuntu28.25-2ubuntu3~16.04
 None known
coreutils
Ubuntu:18.04:LTS
 All versions, plus listed versions
8.26-3ubuntu48.28-1ubuntu1
 None known
coreutils
Ubuntu:20.04:LTS
 All versions, plus listed versions
8.30-3ubuntu2
 None known
coreutils
Ubuntu:22.04:LTS
 All versions, plus listed versions
8.32-4ubuntu28.32-4ubuntu38.32-4.1ubuntu18.32-4.1ubuntu1.18.32-4.1ubuntu1.28.32-4.1ubuntu1.38.32-4.1ubuntu1.4
 None known
coreutils
Ubuntu:24.04:LTS
 All versions, plus listed versions
9.1-1ubuntu29.4-2ubuntu19.4-2ubuntu29.4-2ubuntu39.4-2ubuntu4
Show 6 moreShow less
9.4-3ubuntu39.4-3ubuntu59.4-3ubuntu69.4-3ubuntu6.19.4-3ubuntu6.29.4-3ubuntu6.3
 None known
coreutils
Ubuntu:25.10
 All versions, plus listed versions
9.5-1ubuntu19.5-1ubuntu1.25.10.19.5-1ubuntu29.5-1ubuntu39.5-1ubuntu49.5-1ubuntu4.1
 None known

History

History
WhenChangedSources
2026-11-02createdCVE List, EUVD, GitHub Advisories, NVD, OSV

References

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