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CVE-2016-9401

Published: 23 January 2017

popd in bash might allow local users to bypass the restricted shell and cause a use-after-free via a crafted address.

Notes

AuthorNote
sbeattie
not sure how this has security impact

Priority

Negligible

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
bash
Launchpad, Ubuntu, Debian
upstream Needs triage

artful
Released (4.4-5ubuntu1)
bionic
Released (4.4-5ubuntu1)
cosmic
Released (4.4-5ubuntu1)
disco
Released (4.4-5ubuntu1)
eoan
Released (4.4-5ubuntu1)
focal
Released (4.4-5ubuntu1)
precise Ignored
(end of life)
trusty
Released (4.3-7ubuntu1.7)
xenial
Released (4.3-14ubuntu1.2)
yakkety
Released (4.3-15ubuntu1.1)
zesty
Released (4.4-2ubuntu1.1)
groovy
Released (4.4-5ubuntu1)
hirsute
Released (4.4-5ubuntu1)
Patches:
upstream: https://ftp.gnu.org/pub/gnu/bash/bash-4.4-patches/bash44-006

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H