USN-2380-1

Michal Zalewski discovered that Bash incorrectly handled parsing certain function definitions. If an attacker were able to create an environment variable containing a function definition with a very specific name, these issues could possibly be used to bypass certain environment restrictions and execute arbitrary code. (CVE-2014-6277, CVE-2014-6278)

Please note that the previous Bash security update, USN-2364-1, includes a hardening measure that prevents these issues from being used in a Shellshock attack.

References

Affected packages

Ubuntu:14.04:LTS / bash

Package

Name: bash
Purl: pkg:deb/ubuntu/bash@4.3-7ubuntu1.5?arch=source&distro=trusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

4.3-7ubuntu1.5

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

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "bash",
            "binary_version": "4.3-7ubuntu1.5"
        },
        {
            "binary_name": "bash-builtins",
            "binary_version": "4.3-7ubuntu1.5"
        },
        {
            "binary_name": "bash-static",
            "binary_version": "4.3-7ubuntu1.5"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "id": "CVE-2014-6277",
            "severity": [
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2014-6278",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:14.04:LTS"
}