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FKIE_CVE-2020-1712

Vulnerability from fkie_nvd - Published: 2020-03-31 17:15 - Updated: 2026-06-17 03:02
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
A heap use-after-free vulnerability was found in systemd before version v245-rc1, where asynchronous Polkit queries are performed while handling dbus messages. A local unprivileged attacker can abuse this flaw to crash systemd services or potentially execute code and elevate their privileges, by sending specially crafted dbus messages.
References
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1712Issue Tracking, Patch, Third Party Advisory
secalert@redhat.comhttps://github.com/systemd/systemd/commit/1068447e6954dc6ce52f099ed174c442cb89ed54Patch, Third Party Advisory
secalert@redhat.comhttps://github.com/systemd/systemd/commit/637486261528e8aa3da9f26a4487dc254f4b7abbPatch, Third Party Advisory
secalert@redhat.comhttps://github.com/systemd/systemd/commit/bc130b6858327b382b07b3985cf48e2aa9016b2dPatch, Third Party Advisory
secalert@redhat.comhttps://github.com/systemd/systemd/commit/ea0d0ede03c6f18dbc5036c5e9cccf97e415ccc2Patch, Third Party Advisory
secalert@redhat.comhttps://lists.debian.org/debian-lts-announce/2022/06/msg00025.htmlMailing List, Third Party Advisory
secalert@redhat.comhttps://www.openwall.com/lists/oss-security/2020/02/05/1Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1712Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/systemd/systemd/commit/1068447e6954dc6ce52f099ed174c442cb89ed54Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/systemd/systemd/commit/637486261528e8aa3da9f26a4487dc254f4b7abbPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/systemd/systemd/commit/bc130b6858327b382b07b3985cf48e2aa9016b2dPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/systemd/systemd/commit/ea0d0ede03c6f18dbc5036c5e9cccf97e415ccc2Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/06/msg00025.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.openwall.com/lists/oss-security/2020/02/05/1Mailing List, Patch, Third Party Advisory
Impacted products
Vendor Product Version
systemd_project systemd *
redhat ceph_storage 4.0
redhat discovery -
redhat migration_toolkit 1.0
redhat openshift_container_platform 4.0
redhat enterprise_linux 8.0
debian debian_linux 9.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "systemd",
          "vendor": "[UNKNOWN]",
          "versions": [
            {
              "status": "affected",
              "version": "before v245-rc1"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
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              "versionEndIncluding": "244",
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A heap use-after-free vulnerability was found in systemd before version v245-rc1, where asynchronous Polkit queries are performed while handling dbus messages. A local unprivileged attacker can abuse this flaw to crash systemd services or potentially execute code and elevate their privileges, by sending specially crafted dbus messages."
    },
    {
      "lang": "es",
      "value": "Se detect\u00f3 una vulnerabilidad uso de la memoria previamente liberada de la pila en systemd versiones anteriores a v245-rc1, donde se llevaron a cabo consultas de Polkit asincr\u00f3nicas mientras se manejan mensajes dbus. Un atacante no privilegiado local puede abusar de este fallo para bloquear los servicios de systemd o potencialmente ejecutar c\u00f3digo y elevar sus privilegios, mediante el env\u00edo de mensajes dbus especialmente dise\u00f1ados."
    }
  ],
  "id": "CVE-2020-1712",
  "lastModified": "2026-06-17T03:02:15.560",
  "metrics": {
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        "baseSeverity": "MEDIUM",
        "cvssData": {
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          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.6,
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          "integrityImpact": "PARTIAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
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        "obtainAllPrivilege": false,
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        "source": "nvd@nist.gov",
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            {
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            {
              "technicalImpact": "total"
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          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-06-09T15:52:42.249101Z",
          "version": "2.0.3"
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  "published": "2020-03-31T17:15:26.577",
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}



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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.


Detection rules are retrieved from Rulezet.


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.