FKIE_CVE-2016-7796

Vulnerability from fkie_nvd - Published: 2016-10-13 14:59 - Updated: 2026-06-17 00:53
Severity
5.5 (Medium) - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
The manager_dispatch_notify_fd function in systemd allows local users to cause a denial of service (system hang) via a zero-length message received over a notify socket, which causes an error to be returned and the notification handler to be disabled.
References
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2016-10/msg00015.htmlThird Party Advisory
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2016-10/msg00016.htmlThird Party Advisory
cve@mitre.orghttp://rhn.redhat.com/errata/RHSA-2017-0003.html
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2016/09/30/1Third Party Advisory
cve@mitre.orghttp://www.securityfocus.com/bid/93250Third Party Advisory
cve@mitre.orghttp://www.securitytracker.com/id/1037320
cve@mitre.orghttps://bugzilla.redhat.com/show_bug.cgi?id=1381911Issue Tracking, Third Party Advisory, VDB Entry
cve@mitre.orghttps://github.com/systemd/systemd/issues/4234#issuecomment-250441246Exploit, Patch, Vendor Advisory
cve@mitre.orghttps://rhn.redhat.com/errata/RHBA-2015-2092.htmlThird Party Advisory
cve@mitre.orghttps://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweetExploit, Technical Description, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00015.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2016-10/msg00016.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://rhn.redhat.com/errata/RHSA-2017-0003.html
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2016/09/30/1Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/93250Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1037320
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1381911Issue Tracking, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://github.com/systemd/systemd/issues/4234#issuecomment-250441246Exploit, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://rhn.redhat.com/errata/RHBA-2015-2092.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.agwa.name/blog/post/how_to_crash_systemd_in_one_tweetExploit, Technical Description, Third Party Advisory
Impacted products
Vendor Product Version
systemd_project systemd 209
systemd_project systemd 213
systemd_project systemd 214
systemd_project systemd 229
novell suse_linux_enterprise_software_development_kit 12.0
novell suse_linux_enterprise_desktop 12
novell suse_linux_enterprise_server 12.0
novell suse_linux_enterprise_server 12.0
novell suse_linux_enterprise_server_for_sap 12.0
redhat enterprise_linux_desktop 7.0
redhat enterprise_linux_hpc_node 7.0
redhat enterprise_linux_server 7.0
redhat enterprise_linux_workstation 7.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
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        }
      ],
      "source": "cve@mitre.org"
    }
  ],
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  "cveTags": [],
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    {
      "lang": "en",
      "value": "The manager_dispatch_notify_fd function in systemd allows local users to cause a denial of service (system hang) via a zero-length message received over a notify socket, which causes an error to be returned and the notification handler to be disabled."
    },
    {
      "lang": "es",
      "value": "La funci\u00f3n manager_dispatch_notify_fd en systemd permite a usuarios locales provocar una denegaci\u00f3n de servicio (colgado de sistema) a trav\u00e9s de un mensaje de longitud cero recibido sobre una notificaci\u00f3n de encaje, lo que provoca que se devuelva un error y que el controlador de notificaci\u00f3n se desactive."
    }
  ],
  "id": "CVE-2016-7796",
  "lastModified": "2026-06-17T00:53:30.750",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 4.9,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C",
          "version": "2.0"
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        "exploitabilityScore": 3.9,
        "impactScore": 6.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
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        "userInteractionRequired": false
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          "attackVector": "LOCAL",
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          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
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  "published": "2016-10-13T14:59:14.567",
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          "value": "CWE-20"
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      "source": "nvd@nist.gov",
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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.



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.