fkie_cve-2017-2625
Vulnerability from fkie_nvd
Published
2018-07-27 18:29
Modified
2024-11-21 03:23
Severity ?
6.5 (Medium) - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
5.5 (Medium) - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Summary
It was discovered that libXdmcp before 1.1.2 including used weak entropy to generate session keys. On a multi-user system using xdmcp, a local attacker could potentially use information available from the process list to brute force the key, allowing them to hijack other users' sessions.
References
secalert@redhat.comhttp://www.securityfocus.com/bid/96480Third Party Advisory, VDB Entry
secalert@redhat.comhttp://www.securitytracker.com/id/1037919Third Party Advisory, VDB Entry
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2017:1865Third Party Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2625Issue Tracking, Third Party Advisory
secalert@redhat.comhttps://cgit.freedesktop.org/xorg/lib/libXdmcp/commit/?id=0554324ec6bbc2071f5d1f8ad211a1643e29eb1fThird Party Advisory
secalert@redhat.comhttps://lists.debian.org/debian-lts-announce/2019/11/msg00024.html
secalert@redhat.comhttps://security.gentoo.org/glsa/201704-03Third Party Advisory
secalert@redhat.comhttps://www.x41-dsec.de/lab/advisories/x41-2017-001-xorg/Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/96480Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1037919Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2017:1865Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2625Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://cgit.freedesktop.org/xorg/lib/libXdmcp/commit/?id=0554324ec6bbc2071f5d1f8ad211a1643e29eb1fThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2019/11/msg00024.html
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201704-03Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.x41-dsec.de/lab/advisories/x41-2017-001-xorg/Exploit, Third Party Advisory
Impacted products
Vendor Product Version
x.org libxdmcp *
redhat enterprise_linux 7.0
redhat enterprise_linux_desktop 7.0
redhat enterprise_linux_server 7.0
redhat enterprise_linux_server_aus 7.4
redhat enterprise_linux_server_eus 7.4
redhat enterprise_linux_server_eus 7.5
redhat enterprise_linux_workstation 7.0


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:x.org:libxdmcp:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E0896D7E-B141-40BB-A78B-7BB07F46830D",
              "versionEndExcluding": "1.1.2",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
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              "matchCriteriaId": "142AD0DD-4CF3-4D74-9442-459CE3347E3A",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "33C068A4-3780-4EAB-A937-6082DF847564",
              "vulnerable": true
            },
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              "matchCriteriaId": "51EF4996-72F4-4FA4-814F-F5991E7A8318",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*",
              "matchCriteriaId": "D99A687E-EAE6-417E-A88E-D0082BC194CD",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*",
              "matchCriteriaId": "9EC0D196-F7B8-4BDD-9050-779F7A7FBEE4",
              "vulnerable": true
            },
            {
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              "matchCriteriaId": "A4E9DD8A-A68B-4A69-8B01-BFF92A2020A8",
              "vulnerable": true
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              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "It was discovered that libXdmcp before 1.1.2 including used weak entropy to generate session keys. On a multi-user system using xdmcp, a local attacker could potentially use information available from the process list to brute force the key, allowing them to hijack other users\u0027 sessions."
    },
    {
      "lang": "es",
      "value": "Se ha descubierto que libXdmcp en versiones anteriores a la 1.1.2 usaba entrop\u00eda d\u00e9bil para generar claves de sesi\u00f3n. En un sistema multiusuario que utilice xdmcp, un atacante local podr\u00eda utilizar la informaci\u00f3n disponible en la lista de procesos para usar un ataque de fuerza bruta en la clave, permiti\u00e9ndole secuestrar las sesiones de otros usuarios."
    }
  ],
  "id": "CVE-2017-2625",
  "lastModified": "2024-11-21T03:23:51.520",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": true,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 2.1,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
          "version": "3.0"
        },
        "exploitabilityScore": 2.0,
        "impactScore": 4.0,
        "source": "secalert@redhat.com",
        "type": "Secondary"
      },
      {
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          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
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          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.0"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2018-07-27T18:29:00.860",
  "references": [
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      "tags": [
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      ],
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    },
    {
      "source": "secalert@redhat.com",
      "tags": [
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        "VDB Entry"
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    {
      "source": "secalert@redhat.com",
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      "url": "https://access.redhat.com/errata/RHSA-2017:1865"
    },
    {
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      "tags": [
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      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2625"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://cgit.freedesktop.org/xorg/lib/libXdmcp/commit/?id=0554324ec6bbc2071f5d1f8ad211a1643e29eb1f"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://lists.debian.org/debian-lts-announce/2019/11/msg00024.html"
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    {
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    },
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    },
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  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-331"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Primary"
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    {
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          "lang": "en",
          "value": "CWE-320"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Secondary"
    }
  ]
}


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