USN-4581-1

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Please try reporting it to the source first.
Source
https://ubuntu.com/security/notices/USN-4581-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4581-1.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-4581-1
Upstream
Related
Published
2020-10-14T14:35:01.306002Z
Modified
2025-10-13T04:35:16Z
Summary
python2.7, python3.4, python3.5, python3.6 vulnerability
Details

It was discovered that Python incorrectly handled certain character sequences. A remote attacker could possibly use this issue to perform CRLF injection.

References

Affected packages

Ubuntu:16.04:LTS

python2.7

Package

Name
python2.7
Purl
pkg:deb/ubuntu/python2.7@2.7.12-1ubuntu0~16.04.13?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.7.12-1ubuntu0~16.04.13

Affected versions

2.*

2.7.10-4ubuntu1
2.7.10-4ubuntu2
2.7.11-2
2.7.11-3
2.7.11-4
2.7.11-6
2.7.11-7
2.7.11-7ubuntu1
2.7.12-1~16.04
2.7.12-1ubuntu0~16.04.1
2.7.12-1ubuntu0~16.04.2
2.7.12-1ubuntu0~16.04.3
2.7.12-1ubuntu0~16.04.4
2.7.12-1ubuntu0~16.04.8
2.7.12-1ubuntu0~16.04.9
2.7.12-1ubuntu0~16.04.11
2.7.12-1ubuntu0~16.04.12

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2.7.12-1ubuntu0~16.04.13",
            "binary_name": "idle-python2.7"
        },
        {
            "binary_version": "2.7.12-1ubuntu0~16.04.13",
            "binary_name": "libpython2.7"
        },
        {
            "binary_version": "2.7.12-1ubuntu0~16.04.13",
            "binary_name": "libpython2.7-dev"
        },
        {
            "binary_version": "2.7.12-1ubuntu0~16.04.13",
            "binary_name": "libpython2.7-minimal"
        },
        {
            "binary_version": "2.7.12-1ubuntu0~16.04.13",
            "binary_name": "libpython2.7-stdlib"
        },
        {
            "binary_version": "2.7.12-1ubuntu0~16.04.13",
            "binary_name": "libpython2.7-testsuite"
        },
        {
            "binary_version": "2.7.12-1ubuntu0~16.04.13",
            "binary_name": "python2.7"
        },
        {
            "binary_version": "2.7.12-1ubuntu0~16.04.13",
            "binary_name": "python2.7-dev"
        },
        {
            "binary_version": "2.7.12-1ubuntu0~16.04.13",
            "binary_name": "python2.7-examples"
        },
        {
            "binary_version": "2.7.12-1ubuntu0~16.04.13",
            "binary_name": "python2.7-minimal"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4581-1.json"

cves_map

{
    "cves": [
        {
            "id": "CVE-2020-26116",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:16.04:LTS"
}

python3.5

Package

Name
python3.5
Purl
pkg:deb/ubuntu/python3.5@3.5.2-2ubuntu0~16.04.12?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.5.2-2ubuntu0~16.04.12

Affected versions

3.*

3.5.0-3
3.5.0-3ubuntu1
3.5.1~rc1-2ubuntu1
3.5.1-1
3.5.1-2
3.5.1-3
3.5.1-5
3.5.1-6ubuntu1
3.5.1-6ubuntu2
3.5.1-9ubuntu1
3.5.1-10
3.5.2-2~16.01
3.5.2-2~16.04
3.5.2-2ubuntu0~16.04.1
3.5.2-2ubuntu0~16.04.2
3.5.2-2ubuntu0~16.04.3
3.5.2-2ubuntu0~16.04.4
3.5.2-2ubuntu0~16.04.5
3.5.2-2ubuntu0~16.04.8
3.5.2-2ubuntu0~16.04.9
3.5.2-2ubuntu0~16.04.10
3.5.2-2ubuntu0~16.04.11

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "3.5.2-2ubuntu0~16.04.12",
            "binary_name": "idle-python3.5"
        },
        {
            "binary_version": "3.5.2-2ubuntu0~16.04.12",
            "binary_name": "libpython3.5"
        },
        {
            "binary_version": "3.5.2-2ubuntu0~16.04.12",
            "binary_name": "libpython3.5-dev"
        },
        {
            "binary_version": "3.5.2-2ubuntu0~16.04.12",
            "binary_name": "libpython3.5-minimal"
        },
        {
            "binary_version": "3.5.2-2ubuntu0~16.04.12",
            "binary_name": "libpython3.5-stdlib"
        },
        {
            "binary_version": "3.5.2-2ubuntu0~16.04.12",
            "binary_name": "libpython3.5-testsuite"
        },
        {
            "binary_version": "3.5.2-2ubuntu0~16.04.12",
            "binary_name": "python3.5"
        },
        {
            "binary_version": "3.5.2-2ubuntu0~16.04.12",
            "binary_name": "python3.5-dev"
        },
        {
            "binary_version": "3.5.2-2ubuntu0~16.04.12",
            "binary_name": "python3.5-examples"
        },
        {
            "binary_version": "3.5.2-2ubuntu0~16.04.12",
            "binary_name": "python3.5-minimal"
        },
        {
            "binary_version": "3.5.2-2ubuntu0~16.04.12",
            "binary_name": "python3.5-venv"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4581-1.json"

cves_map

{
    "cves": [
        {
            "id": "CVE-2020-26116",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:16.04:LTS"
}

Ubuntu:18.04:LTS

python2.7

Package

Name
python2.7
Purl
pkg:deb/ubuntu/python2.7@2.7.17-1~18.04ubuntu1.2?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.7.17-1~18.04ubuntu1.2

Affected versions

2.*

2.7.14-2ubuntu2
2.7.14-4
2.7.14-6
2.7.14-7
2.7.14-8
2.7.15~rc1-1
2.7.15~rc1-1ubuntu0.1
2.7.15-4ubuntu4~18.04
2.7.15-4ubuntu4~18.04.1
2.7.15-4ubuntu4~18.04.2
2.7.17-1~18.04
2.7.17-1~18.04ubuntu1
2.7.17-1~18.04ubuntu1.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2.7.17-1~18.04ubuntu1.2",
            "binary_name": "idle-python2.7"
        },
        {
            "binary_version": "2.7.17-1~18.04ubuntu1.2",
            "binary_name": "libpython2.7"
        },
        {
            "binary_version": "2.7.17-1~18.04ubuntu1.2",
            "binary_name": "libpython2.7-dev"
        },
        {
            "binary_version": "2.7.17-1~18.04ubuntu1.2",
            "binary_name": "libpython2.7-minimal"
        },
        {
            "binary_version": "2.7.17-1~18.04ubuntu1.2",
            "binary_name": "libpython2.7-stdlib"
        },
        {
            "binary_version": "2.7.17-1~18.04ubuntu1.2",
            "binary_name": "libpython2.7-testsuite"
        },
        {
            "binary_version": "2.7.17-1~18.04ubuntu1.2",
            "binary_name": "python2.7"
        },
        {
            "binary_version": "2.7.17-1~18.04ubuntu1.2",
            "binary_name": "python2.7-dev"
        },
        {
            "binary_version": "2.7.17-1~18.04ubuntu1.2",
            "binary_name": "python2.7-examples"
        },
        {
            "binary_version": "2.7.17-1~18.04ubuntu1.2",
            "binary_name": "python2.7-minimal"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4581-1.json"

cves_map

{
    "cves": [
        {
            "id": "CVE-2020-26116",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:18.04:LTS"
}

python3.6

Package

Name
python3.6
Purl
pkg:deb/ubuntu/python3.6@3.6.9-1~18.04ubuntu1.3?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.6.9-1~18.04ubuntu1.3

Affected versions

3.*

3.6.3-1ubuntu1
3.6.4~rc1-1
3.6.4~rc1-2
3.6.4-1
3.6.4-2
3.6.4-3build1
3.6.4-4
3.6.5~rc1-1
3.6.5-3
3.6.6-1~18.04
3.6.7-1~18.04
3.6.8-1~18.04.1
3.6.8-1~18.04.2
3.6.8-1~18.04.3
3.6.9-1~18.04
3.6.9-1~18.04ubuntu1
3.6.9-1~18.04ubuntu1.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "3.6.9-1~18.04ubuntu1.3",
            "binary_name": "idle-python3.6"
        },
        {
            "binary_version": "3.6.9-1~18.04ubuntu1.3",
            "binary_name": "libpython3.6"
        },
        {
            "binary_version": "3.6.9-1~18.04ubuntu1.3",
            "binary_name": "libpython3.6-dev"
        },
        {
            "binary_version": "3.6.9-1~18.04ubuntu1.3",
            "binary_name": "libpython3.6-minimal"
        },
        {
            "binary_version": "3.6.9-1~18.04ubuntu1.3",
            "binary_name": "libpython3.6-stdlib"
        },
        {
            "binary_version": "3.6.9-1~18.04ubuntu1.3",
            "binary_name": "libpython3.6-testsuite"
        },
        {
            "binary_version": "3.6.9-1~18.04ubuntu1.3",
            "binary_name": "python3.6"
        },
        {
            "binary_version": "3.6.9-1~18.04ubuntu1.3",
            "binary_name": "python3.6-dev"
        },
        {
            "binary_version": "3.6.9-1~18.04ubuntu1.3",
            "binary_name": "python3.6-examples"
        },
        {
            "binary_version": "3.6.9-1~18.04ubuntu1.3",
            "binary_name": "python3.6-minimal"
        },
        {
            "binary_version": "3.6.9-1~18.04ubuntu1.3",
            "binary_name": "python3.6-venv"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4581-1.json"

cves_map

{
    "cves": [
        {
            "id": "CVE-2020-26116",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:18.04:LTS"
}

Ubuntu:Pro:14.04:LTS

python2.7

Package

Name
python2.7
Purl
pkg:deb/ubuntu/python2.7@2.7.6-8ubuntu0.6+esm7?arch=source&distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.7.6-8ubuntu0.6+esm7

Affected versions

2.*

2.7.5-8ubuntu3
2.7.5-8ubuntu4
2.7.6-2
2.7.6-2ubuntu1
2.7.6-3
2.7.6-3ubuntu1
2.7.6-4
2.7.6-4ubuntu1
2.7.6-5
2.7.6-7
2.7.6-8
2.7.6-8ubuntu0.2
2.7.6-8ubuntu0.3
2.7.6-8ubuntu0.4
2.7.6-8ubuntu0.5
2.7.6-8ubuntu0.6+esm2
2.7.6-8ubuntu0.6+esm3
2.7.6-8ubuntu0.6+esm5
2.7.6-8ubuntu0.6+esm6

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "2.7.6-8ubuntu0.6+esm7",
            "binary_name": "idle-python2.7"
        },
        {
            "binary_version": "2.7.6-8ubuntu0.6+esm7",
            "binary_name": "libpython2.7"
        },
        {
            "binary_version": "2.7.6-8ubuntu0.6+esm7",
            "binary_name": "libpython2.7-dev"
        },
        {
            "binary_version": "2.7.6-8ubuntu0.6+esm7",
            "binary_name": "libpython2.7-minimal"
        },
        {
            "binary_version": "2.7.6-8ubuntu0.6+esm7",
            "binary_name": "libpython2.7-stdlib"
        },
        {
            "binary_version": "2.7.6-8ubuntu0.6+esm7",
            "binary_name": "libpython2.7-testsuite"
        },
        {
            "binary_version": "2.7.6-8ubuntu0.6+esm7",
            "binary_name": "python2.7"
        },
        {
            "binary_version": "2.7.6-8ubuntu0.6+esm7",
            "binary_name": "python2.7-dev"
        },
        {
            "binary_version": "2.7.6-8ubuntu0.6+esm7",
            "binary_name": "python2.7-examples"
        },
        {
            "binary_version": "2.7.6-8ubuntu0.6+esm7",
            "binary_name": "python2.7-minimal"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4581-1.json"

cves_map

{
    "cves": [
        {
            "id": "CVE-2020-26116",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:14.04:LTS"
}

python3.4

Package

Name
python3.4
Purl
pkg:deb/ubuntu/python3.4@3.4.3-1ubuntu1~14.04.7+esm8?arch=source&distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.4.3-1ubuntu1~14.04.7+esm8

Affected versions

3.*

3.4~b1-0ubuntu3
3.4~b1-4ubuntu4
3.4~b1-4ubuntu6
3.4~b1-5ubuntu2
3.4~b2-1
3.4~b3-1ubuntu1
3.4~rc1-1build1
3.4~rc2-1
3.4~rc3-0ubuntu1
3.4.0-1
3.4.0-2ubuntu1
3.4.0-2ubuntu1.1
3.4.3-1ubuntu1~14.04.1
3.4.3-1ubuntu1~14.04.3
3.4.3-1ubuntu1~14.04.4
3.4.3-1ubuntu1~14.04.5
3.4.3-1ubuntu1~14.04.6
3.4.3-1ubuntu1~14.04.7
3.4.3-1ubuntu1~14.04.7+esm2
3.4.3-1ubuntu1~14.04.7+esm4
3.4.3-1ubuntu1~14.04.7+esm6
3.4.3-1ubuntu1~14.04.7+esm7

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "3.4.3-1ubuntu1~14.04.7+esm8",
            "binary_name": "idle-python3.4"
        },
        {
            "binary_version": "3.4.3-1ubuntu1~14.04.7+esm8",
            "binary_name": "libpython3.4"
        },
        {
            "binary_version": "3.4.3-1ubuntu1~14.04.7+esm8",
            "binary_name": "libpython3.4-dev"
        },
        {
            "binary_version": "3.4.3-1ubuntu1~14.04.7+esm8",
            "binary_name": "libpython3.4-minimal"
        },
        {
            "binary_version": "3.4.3-1ubuntu1~14.04.7+esm8",
            "binary_name": "libpython3.4-stdlib"
        },
        {
            "binary_version": "3.4.3-1ubuntu1~14.04.7+esm8",
            "binary_name": "libpython3.4-testsuite"
        },
        {
            "binary_version": "3.4.3-1ubuntu1~14.04.7+esm8",
            "binary_name": "python3.4"
        },
        {
            "binary_version": "3.4.3-1ubuntu1~14.04.7+esm8",
            "binary_name": "python3.4-dev"
        },
        {
            "binary_version": "3.4.3-1ubuntu1~14.04.7+esm8",
            "binary_name": "python3.4-examples"
        },
        {
            "binary_version": "3.4.3-1ubuntu1~14.04.7+esm8",
            "binary_name": "python3.4-minimal"
        },
        {
            "binary_version": "3.4.3-1ubuntu1~14.04.7+esm8",
            "binary_name": "python3.4-venv"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4581-1.json"

cves_map

{
    "cves": [
        {
            "id": "CVE-2020-26116",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:Pro:14.04:LTS"
}