UBUNTU-CVE-2021-20270

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Source
https://ubuntu.com/security/CVE-2021-20270
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20270.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-20270
Related
Published
2021-03-09T00:00:00Z
Modified
2025-01-13T10:22:28Z
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
Summary
[none]
Details

An infinite loop in SMLLexer in Pygments versions 1.5 to 2.7.3 may lead to denial of service when performing syntax highlighting of a Standard ML (SML) source file, as demonstrated by input that only contains the "exception" keyword.

References

Affected packages

Ubuntu:Pro:14.04:LTS / pygments

Package

Name
pygments
Purl
pkg:deb/ubuntu/pygments@1.6+dfsg-1ubuntu1.1+esm1?arch=source&distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6+dfsg-1ubuntu1.1+esm1

Affected versions

1.*

1.6+dfsg-1
1.6+dfsg-1build1
1.6+dfsg-1ubuntu1
1.6+dfsg-1ubuntu1.1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_name": "python-pygments",
            "binary_version": "1.6+dfsg-1ubuntu1.1+esm1"
        },
        {
            "binary_name": "python3-pygments",
            "binary_version": "1.6+dfsg-1ubuntu1.1+esm1"
        }
    ]
}

Ubuntu:16.04:LTS / pygments

Package

Name
pygments
Purl
pkg:deb/ubuntu/pygments@2.1+dfsg-1ubuntu0.1?arch=source&distro=xenial

Affected ranges

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

Affected versions

2.*

2.0.1+dfsg-1.1svn1
2.0.1+dfsg-1.1ubuntu1
2.1+dfsg-1

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_name": "python-pygments",
            "binary_version": "2.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "python-pygments-doc",
            "binary_version": "2.1+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "python3-pygments",
            "binary_version": "2.1+dfsg-1ubuntu0.1"
        }
    ]
}

Ubuntu:18.04:LTS / pygments

Package

Name
pygments
Purl
pkg:deb/ubuntu/pygments@2.2.0+dfsg-1ubuntu0.1?arch=source&distro=bionic

Affected ranges

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

Affected versions

2.*

2.2.0+dfsg-1

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_name": "python-pygments",
            "binary_version": "2.2.0+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "python-pygments-doc",
            "binary_version": "2.2.0+dfsg-1ubuntu0.1"
        },
        {
            "binary_name": "python3-pygments",
            "binary_version": "2.2.0+dfsg-1ubuntu0.1"
        }
    ]
}

Ubuntu:20.04:LTS / pygments

Package

Name
pygments
Purl
pkg:deb/ubuntu/pygments@2.3.1+dfsg-1ubuntu2.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.3.1+dfsg-1ubuntu2.1

Affected versions

2.*

2.3.1+dfsg-1ubuntu1
2.3.1+dfsg-1ubuntu2

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_name": "python-pygments",
            "binary_version": "2.3.1+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "python-pygments-doc",
            "binary_version": "2.3.1+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "python3-pygments",
            "binary_version": "2.3.1+dfsg-1ubuntu2.1"
        }
    ]
}