UBUNTU-CVE-2021-4021

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Source
https://ubuntu.com/security/CVE-2021-4021
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-4021.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-4021
Upstream
Published
2022-02-24T19:15:00Z
Modified
2025-09-08T16:46:50Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A vulnerability was found in Radare2 in versions prior to 5.6.2, 5.6.0, 5.5.4 and 5.5.2. Mapping a huge section filled with zeros of an ELF64 binary for MIPS architecture can lead to uncontrolled resource consumption and DoS.

References

Affected packages

Ubuntu:Pro:16.04:LTS / radare2

Package

Name
radare2
Purl
pkg:deb/ubuntu/radare2@0.9.6-3.1ubuntu1?arch=source&distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.9.6-3.1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libradare2-0.9.6",
            "binary_version": "0.9.6-3.1ubuntu1"
        },
        {
            "binary_name": "libradare2-common",
            "binary_version": "0.9.6-3.1ubuntu1"
        },
        {
            "binary_name": "libradare2-dev",
            "binary_version": "0.9.6-3.1ubuntu1"
        },
        {
            "binary_name": "radare2",
            "binary_version": "0.9.6-3.1ubuntu1"
        },
        {
            "binary_name": "radare2-plugins",
            "binary_version": "0.9.6-3.1ubuntu1"
        }
    ]
}

Ubuntu:Pro:18.04:LTS / radare2

Package

Name
radare2
Purl
pkg:deb/ubuntu/radare2@2.3.0+dfsg-2?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.6.0+dfsg-1

2.*

2.0.0+dfsg-1
2.1.0+dfsg-1
2.3.0+dfsg-1
2.3.0+dfsg-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libradare2-2.3",
            "binary_version": "2.3.0+dfsg-2"
        },
        {
            "binary_name": "libradare2-common",
            "binary_version": "2.3.0+dfsg-2"
        },
        {
            "binary_name": "libradare2-dev",
            "binary_version": "2.3.0+dfsg-2"
        },
        {
            "binary_name": "radare2",
            "binary_version": "2.3.0+dfsg-2"
        }
    ]
}

Ubuntu:Pro:20.04:LTS / radare2

Package

Name
radare2
Purl
pkg:deb/ubuntu/radare2@4.2.1+dfsg-2?arch=source&distro=esm-apps/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.2.1+dfsg-5build1

4.*

4.0.0+dfsg-1
4.2.1+dfsg-1
4.2.1+dfsg-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libradare2-4.2.1",
            "binary_version": "4.2.1+dfsg-2"
        },
        {
            "binary_name": "libradare2-common",
            "binary_version": "4.2.1+dfsg-2"
        },
        {
            "binary_name": "libradare2-dev",
            "binary_version": "4.2.1+dfsg-2"
        },
        {
            "binary_name": "radare2",
            "binary_version": "4.2.1+dfsg-2"
        }
    ]
}

Ubuntu:24.04:LTS / radare2

Package

Name
radare2
Purl
pkg:deb/ubuntu/radare2@5.5.0+dfsg-1.1ubuntu3?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

5.*

5.5.0+dfsg-1ubuntu1
5.5.0+dfsg-1.1ubuntu2
5.5.0+dfsg-1.1ubuntu3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libradare2-5.0.0t64",
            "binary_version": "5.5.0+dfsg-1.1ubuntu3"
        },
        {
            "binary_name": "libradare2-common",
            "binary_version": "5.5.0+dfsg-1.1ubuntu3"
        },
        {
            "binary_name": "libradare2-dev",
            "binary_version": "5.5.0+dfsg-1.1ubuntu3"
        },
        {
            "binary_name": "radare2",
            "binary_version": "5.5.0+dfsg-1.1ubuntu3"
        }
    ]
}

Ubuntu:25.04 / radare2

Package

Name
radare2
Purl
pkg:deb/ubuntu/radare2@5.9.8+dfsg-2?arch=source&distro=plucky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

5.*

5.9.4+dfsg-1
5.9.4+dfsg-1build1
5.9.8+dfsg-1
5.9.8+dfsg-1build1
5.9.8+dfsg-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libradare2-5.0.0t64",
            "binary_version": "5.9.8+dfsg-2"
        },
        {
            "binary_name": "libradare2-common",
            "binary_version": "5.9.8+dfsg-2"
        },
        {
            "binary_name": "libradare2-dev",
            "binary_version": "5.9.8+dfsg-2"
        },
        {
            "binary_name": "radare2",
            "binary_version": "5.9.8+dfsg-2"
        }
    ]
}