UBUNTU-CVE-2021-30500

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Source
https://ubuntu.com/security/CVE-2021-30500
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-30500.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-30500
Upstream
Published
2021-05-27T00:15:00Z
Modified
2025-10-24T04:50:17Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Null pointer dereference was found in upx PackLinuxElf::canUnpack() in plxelf.cpp,in version UPX 4.0.0. That allow attackers to execute arbitrary code and cause a denial of service via a crafted file.

References

Affected packages

Ubuntu:16.04:LTS

upx-ucl

Package

Name
upx-ucl
Purl
pkg:deb/ubuntu/upx-ucl@3.91-1?arch=source&distro=xenial

Affected ranges

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

Affected versions

3.*

3.91-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.91-1",
            "binary_name": "upx-ucl"
        }
    ]
}

Ubuntu:18.04:LTS

upx-ucl

Package

Name
upx-ucl
Purl
pkg:deb/ubuntu/upx-ucl@3.94-4?arch=source&distro=bionic

Affected ranges

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

Affected versions

3.*

3.94-2
3.94-3
3.94-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.94-4",
            "binary_name": "upx-ucl"
        }
    ]
}

Ubuntu:20.04:LTS

upx-ucl

Package

Name
upx-ucl
Purl
pkg:deb/ubuntu/upx-ucl@3.95-2build1?arch=source&distro=focal

Affected ranges

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

Affected versions

3.*

3.95-2
3.95-2build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.95-2build1",
            "binary_name": "upx-ucl"
        }
    ]
}

Ubuntu:22.04:LTS

upx-ucl

Package

Name
upx-ucl
Purl
pkg:deb/ubuntu/upx-ucl@3.96-3?arch=source&distro=jammy

Affected ranges

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

Affected versions

3.*

3.96-2
3.96-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.96-3",
            "binary_name": "upx-ucl"
        }
    ]
}

Ubuntu:24.04:LTS

upx-ucl

Package

Name
upx-ucl
Purl
pkg:deb/ubuntu/upx-ucl@4.2.2-3?arch=source&distro=noble

Affected ranges

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

Affected versions

3.*

3.96-3

4.*

4.2.2-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.2.2-3",
            "binary_name": "upx-ucl"
        }
    ]
}

Ubuntu:25.04

upx-ucl

Package

Name
upx-ucl
Purl
pkg:deb/ubuntu/upx-ucl@4.2.4-1?arch=source&distro=plucky

Affected ranges

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

Affected versions

4.*

4.2.2-3
4.2.4-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.2.4-1",
            "binary_name": "upx-ucl"
        }
    ]
}

Ubuntu:25.10

upx-ucl

Package

Name
upx-ucl
Purl
pkg:deb/ubuntu/upx-ucl@4.2.4-1.1?arch=source&distro=questing

Affected ranges

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

Affected versions

4.*

4.2.4-1
4.2.4-1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.2.4-1.1",
            "binary_name": "upx-ucl"
        }
    ]
}