CVE-2020-12100 (GCVE-0-2020-12100)

Vulnerability from cvelistv5 – Published: 2020-08-12 15:07 – Updated: 2024-08-04 11:48
VLAI
Summary
In Dovecot before 2.3.11.3, uncontrolled recursion in submission, lmtp, and lda allows remote attackers to cause a denial of service (resource consumption) via a crafted e-mail message with deeply nested MIME parts.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • n/a
Assigner
References
URL Tags
https://dovecot.org/security x_refsource_MISC
http://www.openwall.com/lists/oss-security/2020/08/12/1 mailing-listx_refsource_MLIST
https://www.debian.org/security/2020/dsa-4745 vendor-advisoryx_refsource_DEBIAN
https://lists.debian.org/debian-lts-announce/2020… mailing-listx_refsource_MLIST
https://usn.ubuntu.com/4456-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/4456-2/ vendor-advisoryx_refsource_UBUNTU
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://security.gentoo.org/glsa/202009-02 vendor-advisoryx_refsource_GENTOO
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
http://www.openwall.com/lists/oss-security/2021/01/04/3 mailing-listx_refsource_MLIST
http://seclists.org/fulldisclosure/2021/Jan/18 mailing-listx_refsource_FULLDISC
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    },
    "redhat_vex": {
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      "current_release_date": "2025-11-21T16:56:17+00:00",
      "cve": "CVE-2020-12100",
      "id": "CVE-2020-12100",
      "initial_release_date": "2020-08-12T12:00:00+00:00",
      "product_status:fixed": "333",
      "product_status:known_affected": "6",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "dovecot: Resource exhaustion via deeply nested MIME parts",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-12100.json",
      "version": "3"
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      "cve": "CVE-2020-12100",
      "id": "CVE-2020-12100",
      "initial_release_date": "2023-02-15T03:59:21Z",
      "product_status:known_affected": "8",
      "product_status:recommended": "471",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2020-12100",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2020-12100.json",
      "version": "24"
    }
  }
}



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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.