UBUNTU-CVE-2021-20285

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Source
https://ubuntu.com/security/CVE-2021-20285
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20285.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2021-20285
Upstream
Published
2021-03-26T17:15:00Z
Modified
2026-01-20T17:18:54.694325Z
Severity
  • 6.6 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

A flaw was found in upx canPack in plxelf.cpp in UPX 3.96. This flaw allows attackers to cause a denial of service (SEGV or buffer overflow and application crash) or possibly have unspecified other impacts via a crafted ELF. The highest threat from this vulnerability is to system availability.

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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20285.json"
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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20285.json"
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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20285.json"
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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20285.json"
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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20285.json"
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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20285.json"