UBUNTU-CVE-2020-5238

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Source

https://ubuntu.com/security/CVE-2020-5238

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-5238.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-5238

Upstream

CVE-2020-5238

Published

2020-07-01T23:15:00Z

Modified

2025-09-08T16:45:57Z

Severity

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

Summary

[none]

Details

The table extension in GitHub Flavored Markdown before version 0.29.0.gfm.1 takes O(n * n) time to parse certain inputs. An attacker could craft a markdown table which would take an unreasonably long time to process, causing a denial of service. This issue does not affect the upstream cmark project. The issue has been fixed in version 0.29.0.gfm.1.

References

Affected packages

Ubuntu:Pro:20.04:LTS / cmark-gfm

Package

Name: cmark-gfm
Purl: pkg:deb/ubuntu/cmark-gfm@0.29.0.gfm.0-4ubuntu0.1~esm1?arch=source&distro=esm-apps/focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.28.3.gfm.20-3

0.29.0.gfm.0-3

0.29.0.gfm.0-4

0.29.0.gfm.0-4ubuntu0.1~esm1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "cmark-gfm",
            "binary_version": "0.29.0.gfm.0-4ubuntu0.1~esm1"
        },
        {
            "binary_name": "libcmark-gfm-dev",
            "binary_version": "0.29.0.gfm.0-4ubuntu0.1~esm1"
        },
        {
            "binary_name": "libcmark-gfm-extensions-dev",
            "binary_version": "0.29.0.gfm.0-4ubuntu0.1~esm1"
        },
        {
            "binary_name": "libcmark-gfm-extensions0",
            "binary_version": "0.29.0.gfm.0-4ubuntu0.1~esm1"
        },
        {
            "binary_name": "libcmark-gfm0",
            "binary_version": "0.29.0.gfm.0-4ubuntu0.1~esm1"
        }
    ]
}

Ubuntu:Pro:20.04:LTS / haskell-cmark-gfm

Package

Name: haskell-cmark-gfm
Purl: pkg:deb/ubuntu/haskell-cmark-gfm@0.1.8-1build1?arch=source&distro=esm-apps/focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.1.8-1build1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libghc-cmark-gfm-dev",
            "binary_version": "0.1.8-1build1"
        },
        {
            "binary_name": "libghc-cmark-gfm-prof",
            "binary_version": "0.1.8-1build1"
        }
    ]
}

Ubuntu:Pro:20.04:LTS / python-cmarkgfm

Package

Name: python-cmarkgfm
Purl: pkg:deb/ubuntu/python-cmarkgfm@0.4.2-1build2?arch=source&distro=esm-apps/focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.4.2-1build1

0.4.2-1build2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "python3-cmarkgfm",
            "binary_version": "0.4.2-1build2"
        }
    ]
}

Ubuntu:Pro:20.04:LTS / r-cran-commonmark

Package

Name: r-cran-commonmark
Purl: pkg:deb/ubuntu/r-cran-commonmark@1.7-1?arch=source&distro=esm-apps/focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.7-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "r-cran-commonmark",
            "binary_version": "1.7-1"
        }
    ]
}

Ubuntu:Pro:20.04:LTS / ruby-commonmarker

Package

Name: ruby-commonmarker
Purl: pkg:deb/ubuntu/ruby-commonmarker@0.20.2-1build1?arch=source&distro=esm-apps/focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.17.9-1

0.20.2-1build1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "ruby-commonmarker",
            "binary_version": "0.20.2-1build1"
        }
    ]
}

Ubuntu:22.04:LTS / haskell-cmark-gfm

Package

Name: haskell-cmark-gfm
Purl: pkg:deb/ubuntu/haskell-cmark-gfm@0.2.1+ds1-2build2?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.2.1+ds1-1build1

0.2.1+ds1-2build1

0.2.1+ds1-2build2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libghc-cmark-gfm-dev",
            "binary_version": "0.2.1+ds1-2build2"
        },
        {
            "binary_name": "libghc-cmark-gfm-prof",
            "binary_version": "0.2.1+ds1-2build2"
        }
    ]
}

Ubuntu:22.04:LTS / python-cmarkgfm

Package

Name: python-cmarkgfm
Purl: pkg:deb/ubuntu/python-cmarkgfm@0.8.0-1?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.4.2-1build3

0.4.2-1build5

0.8.0-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "python3-cmarkgfm",
            "binary_version": "0.8.0-1"
        }
    ]
}

Ubuntu:22.04:LTS / r-cran-commonmark

Package

Name: r-cran-commonmark
Purl: pkg:deb/ubuntu/r-cran-commonmark@1.7-2?arch=source&distro=jammy

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.7-2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "r-cran-commonmark",
            "binary_version": "1.7-2"
        }
    ]
}

Ubuntu:24.04:LTS / haskell-cmark-gfm

Package

Name: haskell-cmark-gfm
Purl: pkg:deb/ubuntu/haskell-cmark-gfm@0.2.5+ds1-2?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.2.5+ds1-1build2

0.2.5+ds1-2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libghc-cmark-gfm-dev",
            "binary_version": "0.2.5+ds1-2"
        },
        {
            "binary_name": "libghc-cmark-gfm-prof",
            "binary_version": "0.2.5+ds1-2"
        }
    ]
}

Ubuntu:24.04:LTS / python-cmarkgfm

Package

Name: python-cmarkgfm
Purl: pkg:deb/ubuntu/python-cmarkgfm@0.8.0-3?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.8.0-3

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "python3-cmarkgfm",
            "binary_version": "0.8.0-3"
        }
    ]
}

Ubuntu:24.04:LTS / r-cran-commonmark

Package

Name: r-cran-commonmark
Purl: pkg:deb/ubuntu/r-cran-commonmark@1.9.1-1?arch=source&distro=noble

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.9.0-1

1.9.1-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "r-cran-commonmark",
            "binary_version": "1.9.1-1"
        }
    ]
}

Ubuntu:25.04 / haskell-cmark-gfm

Package

Name: haskell-cmark-gfm
Purl: pkg:deb/ubuntu/haskell-cmark-gfm@0.2.6+ds1-1?arch=source&distro=plucky

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.2.5+ds1-2build1

0.2.5+ds1-3

0.2.5+ds1-3ubuntu1

0.2.6+ds1-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libghc-cmark-gfm-dev",
            "binary_version": "0.2.6+ds1-1"
        },
        {
            "binary_name": "libghc-cmark-gfm-prof",
            "binary_version": "0.2.6+ds1-1"
        }
    ]
}

Ubuntu:25.04 / python-cmarkgfm

Package

Name: python-cmarkgfm
Purl: pkg:deb/ubuntu/python-cmarkgfm@0.8.0-3?arch=source&distro=plucky

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.8.0-3

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "python3-cmarkgfm",
            "binary_version": "0.8.0-3"
        }
    ]
}

Ubuntu:25.04 / r-cran-commonmark

Package

Name: r-cran-commonmark
Purl: pkg:deb/ubuntu/r-cran-commonmark@1.9.5-1?arch=source&distro=plucky

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.9.1-1

1.9.2-2

1.9.5-1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "r-cran-commonmark",
            "binary_version": "1.9.5-1"
        }
    ]
}