UBUNTU-CVE-2020-21047

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Source
https://ubuntu.com/security/CVE-2020-21047
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-21047.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2020-21047
Upstream
Downstream
Related
Published
2023-08-22T19:16:00Z
Modified
2025-09-08T16:46:16Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

The libcpu component which is used by libasm of elfutils version 0.177 (git 47780c9e), suffers from denial-of-service vulnerability caused by application crashes due to out-of-bounds write (CWE-787), off-by-one error (CWE-193) and reachable assertion (CWE-617); to exploit the vulnerability, the attackers need to craft certain ELF files which bypass the missing bound checks.

References

Affected packages

Ubuntu:Pro:14.04:LTS / elfutils

Package

Name
elfutils
Purl
pkg:deb/ubuntu/elfutils@0.158-0ubuntu5.3+esm1?arch=source&distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.158-0ubuntu5.3+esm1

Affected versions

0.*

0.157-1ubuntu1
0.158-0ubuntu3
0.158-0ubuntu4
0.158-0ubuntu5
0.158-0ubuntu5.1
0.158-0ubuntu5.2
0.158-0ubuntu5.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "elfutils",
            "binary_version": "0.158-0ubuntu5.3+esm1"
        },
        {
            "binary_name": "libasm-dev",
            "binary_version": "0.158-0ubuntu5.3+esm1"
        },
        {
            "binary_name": "libasm1",
            "binary_version": "0.158-0ubuntu5.3+esm1"
        },
        {
            "binary_name": "libdw-dev",
            "binary_version": "0.158-0ubuntu5.3+esm1"
        },
        {
            "binary_name": "libdw1",
            "binary_version": "0.158-0ubuntu5.3+esm1"
        },
        {
            "binary_name": "libelf-dev",
            "binary_version": "0.158-0ubuntu5.3+esm1"
        },
        {
            "binary_name": "libelf1",
            "binary_version": "0.158-0ubuntu5.3+esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Ubuntu:Pro:16.04:LTS / elfutils

Package

Name
elfutils
Purl
pkg:deb/ubuntu/elfutils@0.165-3ubuntu1.2+esm1?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.165-3ubuntu1.2+esm1

Affected versions

0.*

0.163-4ubuntu1
0.163-5.1
0.164-1
0.165-3
0.165-3ubuntu1
0.165-3ubuntu1.1
0.165-3ubuntu1.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "elfutils",
            "binary_version": "0.165-3ubuntu1.2+esm1"
        },
        {
            "binary_name": "libasm-dev",
            "binary_version": "0.165-3ubuntu1.2+esm1"
        },
        {
            "binary_name": "libasm1",
            "binary_version": "0.165-3ubuntu1.2+esm1"
        },
        {
            "binary_name": "libdw-dev",
            "binary_version": "0.165-3ubuntu1.2+esm1"
        },
        {
            "binary_name": "libdw1",
            "binary_version": "0.165-3ubuntu1.2+esm1"
        },
        {
            "binary_name": "libelf-dev",
            "binary_version": "0.165-3ubuntu1.2+esm1"
        },
        {
            "binary_name": "libelf1",
            "binary_version": "0.165-3ubuntu1.2+esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Ubuntu:Pro:18.04:LTS / elfutils

Package

Name
elfutils
Purl
pkg:deb/ubuntu/elfutils@0.170-0.4ubuntu0.1+esm1?arch=source&distro=esm-infra/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.170-0.4ubuntu0.1+esm1

Affected versions

0.*

0.170-0.1
0.170-0.2
0.170-0.3
0.170-0.4
0.170-0.4ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "elfutils",
            "binary_version": "0.170-0.4ubuntu0.1+esm1"
        },
        {
            "binary_name": "libasm-dev",
            "binary_version": "0.170-0.4ubuntu0.1+esm1"
        },
        {
            "binary_name": "libasm1",
            "binary_version": "0.170-0.4ubuntu0.1+esm1"
        },
        {
            "binary_name": "libdw-dev",
            "binary_version": "0.170-0.4ubuntu0.1+esm1"
        },
        {
            "binary_name": "libdw1",
            "binary_version": "0.170-0.4ubuntu0.1+esm1"
        },
        {
            "binary_name": "libelf-dev",
            "binary_version": "0.170-0.4ubuntu0.1+esm1"
        },
        {
            "binary_name": "libelf1",
            "binary_version": "0.170-0.4ubuntu0.1+esm1"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Ubuntu:20.04:LTS / elfutils

Package

Name
elfutils
Purl
pkg:deb/ubuntu/elfutils@0.176-1.1ubuntu0.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.176-1.1ubuntu0.1

Affected versions

0.*

0.176-1.1
0.176-1.1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "elfutils",
            "binary_version": "0.176-1.1ubuntu0.1"
        },
        {
            "binary_name": "libasm-dev",
            "binary_version": "0.176-1.1ubuntu0.1"
        },
        {
            "binary_name": "libasm1",
            "binary_version": "0.176-1.1ubuntu0.1"
        },
        {
            "binary_name": "libdw-dev",
            "binary_version": "0.176-1.1ubuntu0.1"
        },
        {
            "binary_name": "libdw1",
            "binary_version": "0.176-1.1ubuntu0.1"
        },
        {
            "binary_name": "libelf-dev",
            "binary_version": "0.176-1.1ubuntu0.1"
        },
        {
            "binary_name": "libelf1",
            "binary_version": "0.176-1.1ubuntu0.1"
        }
    ],
    "availability": "No subscription required"
}