USN-6584-2 (UBUNTU-CVE-2021-33912)

Vulnerability from osv_ubuntu – Published: 2024-02-21 10:40 – Updated: 2026-06-25 10:46 – Source website
VLAI
Summary
libspf2 vulnerabilities
Details

USN-6584-1 fixed several vulnerabilities in Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. This update provides the corresponding updates for CVE-2021-33912 and CVE-2021-33913 in Ubuntu 16.04 LTS.

We apologize for the inconvenience.

Original advisory details:

Philipp Jeitner and Haya Shulman discovered that Libspf2 incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2021-20314)

It was discovered that Libspf2 incorrectly handled certain inputs. If a user or an automated system were tricked into opening a specially crafted input file, a remote attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-33912, CVE-2021-33913)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-33912",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2021-33913",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libmail-spf-xs-perl",
            "binary_version": "1.2.10-6ubuntu0.1~esm2"
          },
          {
            "binary_name": "libspf2-2",
            "binary_version": "1.2.10-6ubuntu0.1~esm2"
          },
          {
            "binary_name": "spfquery",
            "binary_version": "1.2.10-6ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "libspf2",
        "purl": "pkg:deb/ubuntu/libspf2@1.2.10-6ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.2.10-6ubuntu0.1~esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.2.10-6",
        "1.2.10-6build1",
        "1.2.10-6ubuntu0.1~esm1"
      ]
    }
  ],
  "aliases": [],
  "details": "USN-6584-1 fixed several vulnerabilities in Ubuntu 18.04 LTS and\nUbuntu 20.04 LTS. This update provides the corresponding updates for\nCVE-2021-33912 and CVE-2021-33913 in Ubuntu 16.04 LTS.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n Philipp Jeitner and Haya Shulman discovered that Libspf2 incorrectly handled\n certain inputs. If a user or an automated system were tricked into opening a\n specially crafted input file, a remote attacker could possibly use this issue\n to cause a denial of service or execute arbitrary code. (CVE-2021-20314)\n \n It was discovered that Libspf2 incorrectly handled certain inputs. If a user or\n an automated system were tricked into opening a specially crafted input file, a\n remote attacker could possibly use this issue to cause a denial of service or\n execute arbitrary code. This issue only affected Ubuntu 18.04 LTS and \n Ubuntu 20.04 LTS. (CVE-2021-33912, CVE-2021-33913)\n",
  "id": "USN-6584-2",
  "modified": "2026-06-25T10:46:18Z",
  "published": "2024-02-21T10:40:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6584-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-33912"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-33913"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "libspf2 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2021-33912",
    "UBUNTU-CVE-2021-33913"
  ]
}



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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.