USN-2364-1

Florian Weimer and Todd Sabin discovered that the Bash parser incorrectly handled memory. An attacker could possibly use this issue to bypass certain environment restrictions and execute arbitrary code. (CVE-2014-7186, CVE-2014-7187)

In addition, this update introduces a hardening measure which adds prefixes and suffixes around environment variable names which contain shell functions.

References

Affected packages

Ubuntu:14.04:LTS / bash

Package

Name: bash
Purl: pkg:deb/ubuntu/bash@4.3-7ubuntu1.4?arch=source&distro=trusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

4.3-7ubuntu1.4

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

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "bash",
            "binary_version": "4.3-7ubuntu1.4"
        },
        {
            "binary_name": "bash-builtins",
            "binary_version": "4.3-7ubuntu1.4"
        },
        {
            "binary_name": "bash-static",
            "binary_version": "4.3-7ubuntu1.4"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-2364-1.json"

cves_map

{
    "ecosystem": "Ubuntu:14.04:LTS",
    "cves": [
        {
            "id": "CVE-2014-7186",
            "severity": [
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2014-7187",
            "severity": [
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}