CVE-2016-9401

2017-01-2300:00:00

ubuntu.com

CVSS2

2.1

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:N/I:N/A:P

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

Percentile

5.1%

JSON

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

Bugs

<http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=844727>

Notes

Author	Note
sbeattie	not sure how this has security impact

OSVersionArchitecturePackageVersionFilename
ubuntu17.10noarchbash< 4.4-5ubuntu1UNKNOWN
ubuntu18.04noarchbash< 4.4-5ubuntu1UNKNOWN
ubuntu18.10noarchbash< 4.4-5ubuntu1UNKNOWN
ubuntu19.04noarchbash< 4.4-5ubuntu1UNKNOWN
ubuntu19.10noarchbash< 4.4-5ubuntu1UNKNOWN
ubuntu20.04noarchbash< 4.4-5ubuntu1UNKNOWN
ubuntu20.10noarchbash< 4.4-5ubuntu1UNKNOWN
ubuntu21.04noarchbash< 4.4-5ubuntu1UNKNOWN
ubuntu14.04noarchbash< 4.3-7ubuntu1.7UNKNOWN
ubuntu16.04noarchbash< 4.3-14ubuntu1.2UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	17.10	noarch	bash	< 4.4-5ubuntu1	UNKNOWN
ubuntu	18.04	noarch	bash	< 4.4-5ubuntu1	UNKNOWN
ubuntu	18.10	noarch	bash	< 4.4-5ubuntu1	UNKNOWN
ubuntu	19.04	noarch	bash	< 4.4-5ubuntu1	UNKNOWN
ubuntu	19.10	noarch	bash	< 4.4-5ubuntu1	UNKNOWN
ubuntu	20.04	noarch	bash	< 4.4-5ubuntu1	UNKNOWN
ubuntu	20.10	noarch	bash	< 4.4-5ubuntu1	UNKNOWN
ubuntu	21.04	noarch	bash	< 4.4-5ubuntu1	UNKNOWN
ubuntu	14.04	noarch	bash	< 4.3-7ubuntu1.7	UNKNOWN
ubuntu	16.04	noarch	bash	< 4.3-14ubuntu1.2	UNKNOWN