usn-4973-1
Vulnerability from osv_ubuntu
Published
2021-06-01 11:56
Modified
2026-04-22 07:36
Summary
python3.8 vulnerability
Details

It was discovered that the Python stdlib ipaddress API incorrectly handled octal strings. A remote attacker could possibly use this issue to perform a wide variety of attacks, including bypassing certain access restrictions.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "idle-python3.8",
            "binary_version": "3.8.5-1~20.04.3"
          },
          {
            "binary_name": "libpython3.8",
            "binary_version": "3.8.5-1~20.04.3"
          },
          {
            "binary_name": "libpython3.8-minimal",
            "binary_version": "3.8.5-1~20.04.3"
          },
          {
            "binary_name": "libpython3.8-stdlib",
            "binary_version": "3.8.5-1~20.04.3"
          },
          {
            "binary_name": "libpython3.8-testsuite",
            "binary_version": "3.8.5-1~20.04.3"
          },
          {
            "binary_name": "python3.8",
            "binary_version": "3.8.5-1~20.04.3"
          },
          {
            "binary_name": "python3.8-examples",
            "binary_version": "3.8.5-1~20.04.3"
          },
          {
            "binary_name": "python3.8-minimal",
            "binary_version": "3.8.5-1~20.04.3"
          },
          {
            "binary_name": "python3.8-venv",
            "binary_version": "3.8.5-1~20.04.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "python3.8",
        "purl": "pkg:deb/ubuntu/python3.8@3.8.5-1~20.04.3?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.8.5-1~20.04.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.8.0-1",
        "3.8.0-2",
        "3.8.0-3",
        "3.8.0-4",
        "3.8.0-5",
        "3.8.1-2ubuntu3",
        "3.8.2~rc1-1ubuntu1",
        "3.8.2-1",
        "3.8.2-1ubuntu1",
        "3.8.2-1ubuntu1.1",
        "3.8.2-1ubuntu1.2",
        "3.8.5-1~20.04",
        "3.8.5-1~20.04.2"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that the Python stdlib ipaddress API incorrectly handled\noctal strings. A remote attacker could possibly use this issue to perform a\nwide variety of attacks, including bypassing certain access restrictions.\n",
  "id": "USN-4973-1",
  "modified": "2026-04-22T07:36:59Z",
  "published": "2021-06-01T11:56:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4973-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-29921"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "python3.8 vulnerability",
  "upstream": [
    "UBUNTU-CVE-2021-29921"
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.