CVE-2016-2781

Severity: medium (CVSS 6.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-02-07 · updated 2026-06-17
Weakness: CWE-20

Description

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.

Affected products

GNU coreutils: all versions

References

http://www.openwall.com/lists/oss-security/2016/02/28/2
http://www.openwall.com/lists/oss-security/2016/02/28/3
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
http://www.openwall.com/lists/oss-security/2016/02/28/2
http://www.openwall.com/lists/oss-security/2016/02/28/3
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E

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