USN-4478-1

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Source
https://ubuntu.com/security/notices/USN-4478-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4478-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-4478-1
Upstream
Related
Published
2020-08-31T17:48:35.041087Z
Modified
2025-10-13T04:35:12Z
Summary
python-rsa vulnerability
Details

It was discovered that Python-RSA incorrectly handled certain ciphertexts. An attacker could possibly use this issue to obtain sensitive information.

References

Affected packages

Ubuntu:Pro:14.04:LTS / python-rsa

Package

Name
python-rsa
Purl
pkg:deb/ubuntu/python-rsa@3.1.2-1ubuntu0.1+esm1?arch=source&distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.1.2-1ubuntu0.1+esm1

Affected versions

3.*

3.1.2-1
3.1.2-1ubuntu0.1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "3.1.2-1ubuntu0.1+esm1",
            "binary_name": "python-rsa"
        },
        {
            "binary_version": "3.1.2-1ubuntu0.1+esm1",
            "binary_name": "python3-rsa"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4478-1.json"

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2020-13757"
        }
    ],
    "ecosystem": "Ubuntu:Pro:14.04:LTS"
}