Improper input validation in GNU Coreutils
CVE-2016-2781
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.6 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (36.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.openwall.com/lists/oss-security/2016/02/28/2 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2016/02/28/3 (mailing-list, Mailing List, Third Party Advisory)
- lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac… (mailing-list)
Frequently asked questions
- What is CVE-2016-2781?
- CVE-2016-2781 is a medium-severity vulnerability in GNU Coreutils, classified under Improper Input Validation. CVSS score: 4.6/10. Published 2017-02-07.
- How severe is CVE-2016-2781?
- Medium severity. CVSS v3 base score is 4.6 out of 10.
- Is CVE-2016-2781 known to be exploited?
- 55 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.