usn-4668-4
Vulnerability from osv_ubuntu
Published
2021-01-11 18:14
Modified
2026-04-22 07:36
Summary
python-apt vulnerability
Details

USN-4668-1 fixed a vulnerability in python-apt. This update provides the corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

Kevin Backhouse discovered that python-apt incorrectly handled resources. A local attacker could possibly use this issue to cause python-apt to consume resources, leading to a denial of service.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-27351",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "python-apt",
            "binary_version": "0.9.3.5ubuntu3+esm4"
          },
          {
            "binary_name": "python-apt-common",
            "binary_version": "0.9.3.5ubuntu3+esm4"
          },
          {
            "binary_name": "python3-apt",
            "binary_version": "0.9.3.5ubuntu3+esm4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "python-apt",
        "purl": "pkg:deb/ubuntu/python-apt@0.9.3.5ubuntu3+esm4?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.9.3.5ubuntu3+esm4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.8.9.1ubuntu1",
        "0.9.0",
        "0.9.1",
        "0.9.1ubuntu1",
        "0.9.3.2",
        "0.9.3.2ubuntu2",
        "0.9.3.3",
        "0.9.3.3ubuntu1",
        "0.9.3.4",
        "0.9.3.4build1",
        "0.9.3.5",
        "0.9.3.5ubuntu1",
        "0.9.3.5ubuntu2",
        "0.9.3.5ubuntu3",
        "0.9.3.5ubuntu3+esm2"
      ]
    }
  ],
  "aliases": [],
  "details": "USN-4668-1 fixed a vulnerability in python-apt. This update provides\nthe corresponding update for Ubuntu 14.04 ESM.\n\nOriginal advisory details:\n\n Kevin Backhouse discovered that python-apt incorrectly handled resources. A\n local attacker could possibly use this issue to cause python-apt to consume\n resources, leading to a denial of service.\n",
  "id": "USN-4668-4",
  "modified": "2026-04-22T07:36:58Z",
  "published": "2021-01-11T18:14:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4668-4"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-27351"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "python-apt vulnerability",
  "upstream": [
    "UBUNTU-CVE-2020-27351"
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.