USN-3294-1

Bernd Dietzel discovered that Bash incorrectly expanded the hostname when displaying the prompt. If a remote attacker were able to modify a hostname, this flaw could be exploited to execute arbitrary code. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-0634)

It was discovered that Bash incorrectly handled the SHELLOPTS and PS4 environment variables. A local attacker could use this issue to execute arbitrary code with root privileges. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-7543)

It was discovered that Bash incorrectly handled the popd command. A remote attacker could possibly use this issue to bypass restricted shells. (CVE-2016-9401)

It was discovered that Bash incorrectly handled path autocompletion. A local attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 17.04. (CVE-2017-5932)

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

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

Database specific

cves_map

{
    "ecosystem": "Ubuntu:14.04:LTS",
    "cves": [
        {
            "id": "CVE-2016-0634",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "low"
                }
            ]
        },
        {
            "id": "CVE-2016-7543",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2016-9401",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "negligible"
                }
            ]
        }
    ]
}

Ubuntu:16.04:LTS / bash