UBUNTU-CVE-2016-9401

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Source
https://ubuntu.com/security/CVE-2016-9401
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-9401.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2016-9401
Upstream
Downstream
Related
Published
2017-01-23T00:00:00Z
Modified
2025-08-08T04:43:01Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 6.2 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 5.5 (Medium) CVSS_V3 - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
  • Ubuntu - negligible
Summary
[none]
Details

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

References

Affected packages

Ubuntu:14.04:LTS / bash

Package

Name
bash
Purl
pkg:deb/ubuntu/bash@4.3-7ubuntu1.7?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.3-7ubuntu1.7

Affected versions

4.*

4.2-5ubuntu3
4.3-1ubuntu2
4.3-2ubuntu1
4.3-3ubuntu1
4.3-4ubuntu1
4.3-4ubuntu2
4.3-6ubuntu1
4.3-7ubuntu1
4.3-7ubuntu1.1
4.3-7ubuntu1.2
4.3-7ubuntu1.3
4.3-7ubuntu1.4
4.3-7ubuntu1.5
4.3-7ubuntu1.6

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "bash",
            "binary_version": "4.3-7ubuntu1.7"
        },
        {
            "binary_name": "bash-builtins",
            "binary_version": "4.3-7ubuntu1.7"
        },
        {
            "binary_name": "bash-dbgsym",
            "binary_version": "4.3-7ubuntu1.7"
        },
        {
            "binary_name": "bash-doc",
            "binary_version": "4.3-7ubuntu1.7"
        },
        {
            "binary_name": "bash-static",
            "binary_version": "4.3-7ubuntu1.7"
        },
        {
            "binary_name": "bash-static-dbgsym",
            "binary_version": "4.3-7ubuntu1.7"
        }
    ]
}

Ubuntu:16.04:LTS / bash

Package

Name
bash
Purl
pkg:deb/ubuntu/bash@4.3-14ubuntu1.2?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.3-14ubuntu1.2

Affected versions

4.*

4.3-14ubuntu1
4.3-14ubuntu1.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "bash",
            "binary_version": "4.3-14ubuntu1.2"
        },
        {
            "binary_name": "bash-builtins",
            "binary_version": "4.3-14ubuntu1.2"
        },
        {
            "binary_name": "bash-dbgsym",
            "binary_version": "4.3-14ubuntu1.2"
        },
        {
            "binary_name": "bash-doc",
            "binary_version": "4.3-14ubuntu1.2"
        },
        {
            "binary_name": "bash-static",
            "binary_version": "4.3-14ubuntu1.2"
        },
        {
            "binary_name": "bash-static-dbgsym",
            "binary_version": "4.3-14ubuntu1.2"
        }
    ]
}

Ubuntu:18.04:LTS / bash

Package

Name
bash
Purl
pkg:deb/ubuntu/bash@4.4-5ubuntu1?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.4-5ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "bash",
            "binary_version": "4.4-5ubuntu1"
        },
        {
            "binary_name": "bash-builtins",
            "binary_version": "4.4-5ubuntu1"
        },
        {
            "binary_name": "bash-builtins-dbgsym",
            "binary_version": "4.4-5ubuntu1"
        },
        {
            "binary_name": "bash-dbgsym",
            "binary_version": "4.4-5ubuntu1"
        },
        {
            "binary_name": "bash-doc",
            "binary_version": "4.4-5ubuntu1"
        },
        {
            "binary_name": "bash-static",
            "binary_version": "4.4-5ubuntu1"
        },
        {
            "binary_name": "bash-static-dbgsym",
            "binary_version": "4.4-5ubuntu1"
        }
    ]
}