UBUNTU-CVE-2021-42378

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Source

https://ubuntu.com/security/CVE-2021-42378

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-42378.json

JSON Data

https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2021-42378

Upstream

CVE-2021-42378

Downstream

USN-5179-1

Related

USN-5179-1

Published

2021-11-15T21:15:00Z

Modified

2025-09-08T16:47:23Z

Severity

7.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
7.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Ubuntu - low

Summary

[none]

Details

A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the getvar_i function

References

Affected packages

Ubuntu:Pro:14.04:LTS / busybox

Package

Name: busybox
Purl: pkg:deb/ubuntu/busybox@1:1.21.0-1ubuntu1.4+esm1?arch=source&distro=esm-infra-legacy/trusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:1.*

1:1.20.0-8.1ubuntu1

1:1.20.0-9ubuntu1

1:1.20.0-9ubuntu2

1:1.21.0-1ubuntu1

1:1.21.0-1ubuntu1.4

1:1.21.0-1ubuntu1.4+esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "1:1.21.0-1ubuntu1.4+esm1",
            "binary_name": "busybox"
        },
        {
            "binary_version": "1:1.21.0-1ubuntu1.4+esm1",
            "binary_name": "busybox-initramfs"
        },
        {
            "binary_version": "1:1.21.0-1ubuntu1.4+esm1",
            "binary_name": "busybox-static"
        },
        {
            "binary_version": "1:1.21.0-1ubuntu1.4+esm1",
            "binary_name": "busybox-syslogd"
        },
        {
            "binary_version": "1:1.21.0-1ubuntu1.4+esm1",
            "binary_name": "udhcpc"
        },
        {
            "binary_version": "1:1.21.0-1ubuntu1.4+esm1",
            "binary_name": "udhcpd"
        }
    ]
}

Ubuntu:Pro:16.04:LTS / busybox

Package

Name: busybox
Purl: pkg:deb/ubuntu/busybox@1:1.22.0-15ubuntu1.4+esm2?arch=source&distro=esm-infra/xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1:1.*

1:1.22.0-15ubuntu1

1:1.22.0-15ubuntu1.4

1:1.22.0-15ubuntu1.4+esm1

1:1.22.0-15ubuntu1.4+esm2

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "1:1.22.0-15ubuntu1.4+esm2",
            "binary_name": "busybox"
        },
        {
            "binary_version": "1:1.22.0-15ubuntu1.4+esm2",
            "binary_name": "busybox-initramfs"
        },
        {
            "binary_version": "1:1.22.0-15ubuntu1.4+esm2",
            "binary_name": "busybox-static"
        },
        {
            "binary_version": "1:1.22.0-15ubuntu1.4+esm2",
            "binary_name": "busybox-syslogd"
        },
        {
            "binary_version": "1:1.22.0-15ubuntu1.4+esm2",
            "binary_name": "udhcpc"
        },
        {
            "binary_version": "1:1.22.0-15ubuntu1.4+esm2",
            "binary_name": "udhcpd"
        }
    ]
}

Ubuntu:18.04:LTS / busybox

Package

Name: busybox
Purl: pkg:deb/ubuntu/busybox@1:1.27.2-2ubuntu3.4?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1:1.27.2-2ubuntu3.4

Affected versions

1:1.*

1:1.22.0-19ubuntu2

1:1.27.2-1ubuntu3

1:1.27.2-1ubuntu4

1:1.27.2-2ubuntu2

1:1.27.2-2ubuntu3

1:1.27.2-2ubuntu3.1

1:1.27.2-2ubuntu3.2

1:1.27.2-2ubuntu3.3

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1:1.27.2-2ubuntu3.4",
            "binary_name": "busybox"
        },
        {
            "binary_version": "1:1.27.2-2ubuntu3.4",
            "binary_name": "busybox-initramfs"
        },
        {
            "binary_version": "1:1.27.2-2ubuntu3.4",
            "binary_name": "busybox-static"
        },
        {
            "binary_version": "1:1.27.2-2ubuntu3.4",
            "binary_name": "busybox-syslogd"
        },
        {
            "binary_version": "1:1.27.2-2ubuntu3.4",
            "binary_name": "udhcpc"
        },
        {
            "binary_version": "1:1.27.2-2ubuntu3.4",
            "binary_name": "udhcpd"
        }
    ]
}

Ubuntu:20.04:LTS / busybox

Package

Name: busybox
Purl: pkg:deb/ubuntu/busybox@1:1.30.1-4ubuntu6.4?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1:1.30.1-4ubuntu6.4

Affected versions

1:1.*

1:1.30.1-4ubuntu4

1:1.30.1-4ubuntu5

1:1.30.1-4ubuntu6

1:1.30.1-4ubuntu6.1

1:1.30.1-4ubuntu6.2

1:1.30.1-4ubuntu6.3

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1:1.30.1-4ubuntu6.4",
            "binary_name": "busybox"
        },
        {
            "binary_version": "1:1.30.1-4ubuntu6.4",
            "binary_name": "busybox-initramfs"
        },
        {
            "binary_version": "1:1.30.1-4ubuntu6.4",
            "binary_name": "busybox-static"
        },
        {
            "binary_version": "1:1.30.1-4ubuntu6.4",
            "binary_name": "busybox-syslogd"
        },
        {
            "binary_version": "1:1.30.1-4ubuntu6.4",
            "binary_name": "udhcpc"
        },
        {
            "binary_version": "1:1.30.1-4ubuntu6.4",
            "binary_name": "udhcpd"
        }
    ]
}

Ubuntu:22.04:LTS / busybox

Package

Name: busybox
Purl: pkg:deb/ubuntu/busybox@1:1.30.1-7ubuntu2?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1:1.30.1-7ubuntu2

Affected versions

1:1.*

1:1.30.1-6ubuntu3

1:1.30.1-7ubuntu1

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1:1.30.1-7ubuntu2",
            "binary_name": "busybox"
        },
        {
            "binary_version": "1:1.30.1-7ubuntu2",
            "binary_name": "busybox-initramfs"
        },
        {
            "binary_version": "1:1.30.1-7ubuntu2",
            "binary_name": "busybox-static"
        },
        {
            "binary_version": "1:1.30.1-7ubuntu2",
            "binary_name": "busybox-syslogd"
        },
        {
            "binary_version": "1:1.30.1-7ubuntu2",
            "binary_name": "udhcpc"
        },
        {
            "binary_version": "1:1.30.1-7ubuntu2",
            "binary_name": "udhcpd"
        }
    ]
}