4.6med

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, wh…

Published 9 y ago · modified 4 mo ago · JSON

CVSS
4.6
v3.1 · CNA
CISA KEV
No
not known exploited
EPSS
0.4%
percentile 37%
Public exploits
0
none known

Summary

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.

CISA SSVC assessment

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
16 mo ago

Exploit prediction (EPSS)

0.43% probability of exploitation in the next 30 days, higher than 37% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
CISA ADP3.14.6CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CNA3.14.6CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD3.06.5CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
NVD2.02.1AV:L/AC:L/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-20 Improper Input Validation

References

  • openwall.com /lists/oss-security/2016/02/28/2 · mailing-list, x_refsource_MLIST, x_transferred
  • openwall.com /lists/oss-security/2016/02/28/3 · mailing-list, x_refsource_MLIST, x_transferred
  • lists.apache.org /thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apach · mailing-list, x_refsource_MLIST, x_transferred

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.