USN-4897-1

Ben Caller discovered that Pygments incorrectly handled parsing certain files. If a user or automated system were tricked into parsing a specially crafted file, a remote attacker could cause Pygments to hang or consume resources, resulting in a denial of service.

References

Affected packages

Ubuntu:16.04:LTS / pygments

Package

Name: pygments
Purl: pkg:deb/ubuntu/pygments@2.1+dfsg-1ubuntu0.2?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.1+dfsg-1ubuntu0.2

Affected versions

2.*

2.0.1+dfsg-1.1svn1

2.0.1+dfsg-1.1ubuntu1

2.1+dfsg-1

2.1+dfsg-1ubuntu0.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "python-pygments",
            "binary_version": "2.1+dfsg-1ubuntu0.2"
        },
        {
            "binary_name": "python3-pygments",
            "binary_version": "2.1+dfsg-1ubuntu0.2"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4897-1.json"

cves_map

{
    "ecosystem": "Ubuntu:16.04:LTS",
    "cves": [
        {
            "id": "CVE-2021-27291",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:18.04:LTS / pygments

Package

Name: pygments
Purl: pkg:deb/ubuntu/pygments@2.2.0+dfsg-1ubuntu0.2?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.2.0+dfsg-1ubuntu0.2

Affected versions

2.*

2.2.0+dfsg-1

2.2.0+dfsg-1ubuntu0.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "python-pygments",
            "binary_version": "2.2.0+dfsg-1ubuntu0.2"
        },
        {
            "binary_name": "python3-pygments",
            "binary_version": "2.2.0+dfsg-1ubuntu0.2"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4897-1.json"

cves_map

{
    "ecosystem": "Ubuntu:18.04:LTS",
    "cves": [
        {
            "id": "CVE-2021-27291",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:20.04:LTS / pygments

Package

Name: pygments
Purl: pkg:deb/ubuntu/pygments@2.3.1+dfsg-1ubuntu2.2?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.3.1+dfsg-1ubuntu2.2

Affected versions

2.*

2.3.1+dfsg-1ubuntu1

2.3.1+dfsg-1ubuntu2

2.3.1+dfsg-1ubuntu2.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "python-pygments",
            "binary_version": "2.3.1+dfsg-1ubuntu2.2"
        },
        {
            "binary_name": "python3-pygments",
            "binary_version": "2.3.1+dfsg-1ubuntu2.2"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4897-1.json"

cves_map

{
    "ecosystem": "Ubuntu:20.04:LTS",
    "cves": [
        {
            "id": "CVE-2021-27291",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}