USN-4754-4

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Source
https://ubuntu.com/security/notices/USN-4754-4
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4754-4.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-4754-4
Upstream
Related
Published
2021-03-03T11:38:20.852456Z
Modified
2025-12-23T06:46:45.886214Z
Summary
python2.7 vulnerability
Details

USN-4754-1 fixed vulnerabilities in Python. Because of a regression, a subsequent update removed the fix for CVE-2021-3177. This update reinstates the security fix for CVE-2021-3177.

We apologize for the inconvenience.

Original advisory details:

It was discovered that Python incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code or cause a denial of service. (CVE-2020-27619, CVE-2021-3177)

References

Affected packages

Ubuntu:16.04:LTS / python2.7

Package

Name
python2.7
Purl
pkg:deb/ubuntu/python2.7@2.7.12-1ubuntu0~16.04.18?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.7.12-1ubuntu0~16.04.18

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
2.7.12-1ubuntu0~16.04.13
2.7.12-1ubuntu0~16.04.14
2.7.12-1ubuntu0~16.04.16

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2.7.12-1ubuntu0~16.04.18",
            "binary_name": "idle-python2.7"
        },
        {
            "binary_version": "2.7.12-1ubuntu0~16.04.18",
            "binary_name": "libpython2.7"
        },
        {
            "binary_version": "2.7.12-1ubuntu0~16.04.18",
            "binary_name": "libpython2.7-dev"
        },
        {
            "binary_version": "2.7.12-1ubuntu0~16.04.18",
            "binary_name": "libpython2.7-minimal"
        },
        {
            "binary_version": "2.7.12-1ubuntu0~16.04.18",
            "binary_name": "libpython2.7-stdlib"
        },
        {
            "binary_version": "2.7.12-1ubuntu0~16.04.18",
            "binary_name": "libpython2.7-testsuite"
        },
        {
            "binary_version": "2.7.12-1ubuntu0~16.04.18",
            "binary_name": "python2.7"
        },
        {
            "binary_version": "2.7.12-1ubuntu0~16.04.18",
            "binary_name": "python2.7-dev"
        },
        {
            "binary_version": "2.7.12-1ubuntu0~16.04.18",
            "binary_name": "python2.7-examples"
        },
        {
            "binary_version": "2.7.12-1ubuntu0~16.04.18",
            "binary_name": "python2.7-minimal"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4754-4.json"

cves_map

{
    "cves": [
        {
            "id": "CVE-2021-3177",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "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@2.7.17-1~18.04ubuntu1.6?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.7.17-1~18.04ubuntu1.6

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
2.7.17-1~18.04ubuntu1.2
2.7.17-1~18.04ubuntu1.3
2.7.17-1~18.04ubuntu1.5

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2.7.17-1~18.04ubuntu1.6",
            "binary_name": "idle-python2.7"
        },
        {
            "binary_version": "2.7.17-1~18.04ubuntu1.6",
            "binary_name": "libpython2.7"
        },
        {
            "binary_version": "2.7.17-1~18.04ubuntu1.6",
            "binary_name": "libpython2.7-dev"
        },
        {
            "binary_version": "2.7.17-1~18.04ubuntu1.6",
            "binary_name": "libpython2.7-minimal"
        },
        {
            "binary_version": "2.7.17-1~18.04ubuntu1.6",
            "binary_name": "libpython2.7-stdlib"
        },
        {
            "binary_version": "2.7.17-1~18.04ubuntu1.6",
            "binary_name": "libpython2.7-testsuite"
        },
        {
            "binary_version": "2.7.17-1~18.04ubuntu1.6",
            "binary_name": "python2.7"
        },
        {
            "binary_version": "2.7.17-1~18.04ubuntu1.6",
            "binary_name": "python2.7-dev"
        },
        {
            "binary_version": "2.7.17-1~18.04ubuntu1.6",
            "binary_name": "python2.7-examples"
        },
        {
            "binary_version": "2.7.17-1~18.04ubuntu1.6",
            "binary_name": "python2.7-minimal"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4754-4.json"

cves_map

{
    "cves": [
        {
            "id": "CVE-2021-3177",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:18.04:LTS"
}