CVE-2016-9401: popd in bash might allow local users to bypass the restricted shell and cause a use-after-free via a crafted address

Medium severity · published Jan 23, 2017

CVE-2016-9401

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

5.5

CVSS

0.4%

EPSS

On KEV

Description

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

CVSS vector

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

Attack vector

Local

Complexity

Low

Privileges

Low

User interaction

None

Confidentiality

None

Integrity

None

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)0.4% · higher than 36% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Bash · Gnu

before 4.4; 4.4; 4.4; 4.4; 4.4; 4.4 · source: NVD

Debian Linux · Debian

8.0 · source: NVD

Enterprise Linux Desktop · Redhat

6.0; 7.0 · source: NVD

Enterprise Linux Server · Redhat

6.0; 7.0 · source: NVD

Enterprise Linux Server Aus · Redhat

7.4; 7.6; 7.7 · source: NVD

Enterprise Linux Server Eus · Redhat

7.4; 7.5; 7.6; 7.7 · source: NVD

Enterprise Linux Server Tus · Redhat

7.6; 7.7 · source: NVD

Enterprise Linux Workstation · Redhat

6.0; 7.0 · source: NVD

Affected product

Debian Linux

Debian

All Debian Linux CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2016-9401

CVE.org

https://www.cve.org/CVERecord?id=CVE-2016-9401

Third Party Advisory

http://rhn.redhat.com/errata/RHSA-2017-0725.html

Mailing List

http://www.openwall.com/lists/oss-security/2016/11/17/5

Mailing List

http://www.openwall.com/lists/oss-security/2016/11/17/9

Third Party Advisory

http://www.securityfocus.com/bid/94398

Third Party Advisory

https://access.redhat.com/errata/RHSA-2017:1931

Mailing List

https://lists.debian.org/debian-lts-announce/2019/03/msg00028.html