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CVE-2016-2119 (GCVE-0-2016-2119)

Vulnerability from cvelistv5 – Published: 2016-07-07 15:00 – Updated: 2024-08-05 23:17
VLAI
Summary
libcli/smb/smbXcli_base.c in Samba 4.x before 4.2.14, 4.3.x before 4.3.11, and 4.4.x before 4.4.5 allows man-in-the-middle attackers to bypass a client-signing protection mechanism, and consequently spoof SMB2 and SMB3 servers, via the (1) SMB2_SESSION_FLAG_IS_GUEST or (2) SMB2_SESSION_FLAG_IS_NULL flag.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
  • n/a
Assigner
References
Date Public
2016-07-07 00:00
Show details on NVD website
To clipboard 

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Advisory\"]},{\"url\":\"http://www.securityfocus.com/bid/91700\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"http://www.securitytracker.com/id/1036244\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"https://security.gentoo.org/glsa/201805-07\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.samba.org/samba/security/CVE-2016-2119.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-27T07:19:10+00:00",
      "cve": "CVE-2016-2119",
      "id": "CVE-2016-2119",
      "initial_release_date": "2016-07-07T00:00:00+00:00",
      "product_status:fixed": "433",
      "product_status:known_not_affected": "15",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "samba: Client side SMB2/3 required signing can be downgraded",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-2119.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-23T00:36:43Z",
      "cve": "CVE-2016-2119",
      "id": "CVE-2016-2119",
      "initial_release_date": "2023-02-15T05:06:35Z",
      "product_status:known_affected": "320",
      "product_status:known_not_affected": "892",
      "product_status:recommended": "3879",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2016-2119",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2016-2119.json",
      "version": "39"
    }
  }
}



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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.


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.