FKIE_CVE-2017-9461

Vulnerability from fkie_nvd - Published: 2017-06-06 21:29 - Updated: 2026-06-17 01:28
Severity
6.5 (Medium) - CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
smbd in Samba before 4.4.10 and 4.5.x before 4.5.6 has a denial of service vulnerability (fd_open_atomic infinite loop with high CPU usage and memory consumption) due to wrongly handling dangling symlinks.
References
cve@mitre.orghttp://www.securityfocus.com/bid/99455Third Party Advisory, VDB Entry
cve@mitre.orghttps://access.redhat.com/errata/RHSA-2017:1950Third Party Advisory
cve@mitre.orghttps://access.redhat.com/errata/RHSA-2017:2338Third Party Advisory
cve@mitre.orghttps://access.redhat.com/errata/RHSA-2017:2778Third Party Advisory
cve@mitre.orghttps://bugs.debian.org/864291Exploit, Issue Tracking, Patch, Third Party Advisory
cve@mitre.orghttps://bugzilla.samba.org/show_bug.cgi?id=12572Exploit, Issue Tracking, Patch, Third Party Advisory, VDB Entry
cve@mitre.orghttps://git.samba.org/?p=samba.git%3Ba=commit%3Bh=10c3e3923022485c720f322ca4f0aca5d7501310
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2019/04/msg00013.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/99455Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2017:1950Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2017:2338Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2017:2778Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugs.debian.org/864291Exploit, Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.samba.org/show_bug.cgi?id=12572Exploit, Issue Tracking, Patch, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://git.samba.org/?p=samba.git%3Ba=commit%3Bh=10c3e3923022485c720f322ca4f0aca5d7501310
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2019/04/msg00013.htmlThird Party Advisory
Impacted products
Vendor Product Version
samba samba *
samba samba 4.5.0
samba samba 4.5.1
samba samba 4.5.2
samba samba 4.5.3
samba samba 4.5.4
samba samba 4.5.5
redhat enterprise_linux_desktop 7.0
redhat enterprise_linux_server 7.0
redhat enterprise_linux_server_aus 7.4
redhat enterprise_linux_server_aus 7.6
redhat enterprise_linux_server_eus 7.4
redhat enterprise_linux_server_eus 7.5
redhat enterprise_linux_server_eus 7.6
redhat enterprise_linux_server_tus 7.6
redhat enterprise_linux_workstation 7.0
debian debian_linux 8.0
To clipboard 

{
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    {
      "affectedData": [
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          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "smbd in Samba before 4.4.10 and 4.5.x before 4.5.6 has a denial of service vulnerability (fd_open_atomic infinite loop with high CPU usage and memory consumption) due to wrongly handling dangling symlinks."
    },
    {
      "lang": "es",
      "value": "smbd en Samba versiones anteriores a 4.4.10 y 4.5.x versiones anteriores a 4.5.6, tienen una vulnerabilidad de denegaci\u00f3n de servicio (fd_open_atomic infinite loop con un alto uso de CPU y consumo de memoria) debido a un manejo inadecuado de los enlaces simb\u00f3licos colgantes."
    }
  ],
  "id": "CVE-2017-9461",
  "lastModified": "2026-06-17T01:28:08.827",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 6.8,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 8.0,
        "impactScore": 6.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
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        "source": "nvd@nist.gov",
        "type": "Primary",
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    "cvssMetricV30": [
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        "cvssData": {
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          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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  "published": "2017-06-06T21:29:00.313",
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      "source": "nvd@nist.gov",
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  ]
}



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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.



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