CVE-2014-0979 (GCVE-0-2014-0979)

Vulnerability from cvelistv5 – Published: 2014-01-23 01:00 – Updated: 2024-08-06 09:34
VLAI
Summary
The start_authentication function in lightdm-gtk-greeter.c in LightDM GTK+ Greeter before 1.7.1 does not properly handle the return value from the lightdm_greeter_get_authentication_user function, which allows local users to cause a denial of service (NULL pointer dereference) via an empty username.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
References
URL Tags
http://www.securityfocus.com/bid/64679 vdb-entryx_refsource_BID
http://lists.fedoraproject.org/pipermail/package-… vendor-advisoryx_refsource_FEDORA
https://bugzilla.novell.com/show_bug.cgi?id=857303 x_refsource_CONFIRM
http://www.openwall.com/lists/oss-security/2014/0… mailing-listx_refsource_MLIST
http://lists.fedoraproject.org/pipermail/package-… vendor-advisoryx_refsource_FEDORA
http://lists.opensuse.org/opensuse-updates/2014-0… vendor-advisoryx_refsource_SUSE
http://secunia.com/advisories/56211 third-party-advisoryx_refsource_SECUNIA
https://bugs.launchpad.net/lightdm-gtk-greeter/+b… x_refsource_CONFIRM
http://secunia.com/advisories/56423 third-party-advisoryx_refsource_SECUNIA
Date Public
2014-01-06 00:00
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-06T09:34:40.438Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "64679",
            "tags": [
              "vdb-entry",
              "x_refsource_BID",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/64679"
          },
          {
            "name": "FEDORA-2014-1648",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128150.html"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://bugzilla.novell.com/show_bug.cgi?id=857303"
          },
          {
            "name": "[oss-security] 20140107 Re: CVE request: lightdm-gtk-greeter - local DOS due to NULL pointer dereference",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2014/01/07/15"
          },
          {
            "name": "FEDORA-2014-1647",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128117.html"
          },
          {
            "name": "openSUSE-SU-2014:0071",
            "tags": [
              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-updates/2014-01/msg00048.html"
          },
          {
            "name": "56211",
            "tags": [
              "third-party-advisory",
              "x_refsource_SECUNIA",
              "x_transferred"
            ],
            "url": "http://secunia.com/advisories/56211"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://bugs.launchpad.net/lightdm-gtk-greeter/+bug/1266449"
          },
          {
            "name": "56423",
            "tags": [
              "third-party-advisory",
              "x_refsource_SECUNIA",
              "x_transferred"
            ],
            "url": "http://secunia.com/advisories/56423"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2014-01-06T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "The start_authentication function in lightdm-gtk-greeter.c in LightDM GTK+ Greeter before 1.7.1 does not properly handle the return value from the lightdm_greeter_get_authentication_user function, which allows local users to cause a denial of service (NULL pointer dereference) via an empty username."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2014-02-18T17:57:02.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "name": "64679",
          "tags": [
            "vdb-entry",
            "x_refsource_BID"
          ],
          "url": "http://www.securityfocus.com/bid/64679"
        },
        {
          "name": "FEDORA-2014-1648",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128150.html"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://bugzilla.novell.com/show_bug.cgi?id=857303"
        },
        {
          "name": "[oss-security] 20140107 Re: CVE request: lightdm-gtk-greeter - local DOS due to NULL pointer dereference",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2014/01/07/15"
        },
        {
          "name": "FEDORA-2014-1647",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128117.html"
        },
        {
          "name": "openSUSE-SU-2014:0071",
          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-updates/2014-01/msg00048.html"
        },
        {
          "name": "56211",
          "tags": [
            "third-party-advisory",
            "x_refsource_SECUNIA"
          ],
          "url": "http://secunia.com/advisories/56211"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://bugs.launchpad.net/lightdm-gtk-greeter/+bug/1266449"
        },
        {
          "name": "56423",
          "tags": [
            "third-party-advisory",
            "x_refsource_SECUNIA"
          ],
          "url": "http://secunia.com/advisories/56423"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2014-0979",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "The start_authentication function in lightdm-gtk-greeter.c in LightDM GTK+ Greeter before 1.7.1 does not properly handle the return value from the lightdm_greeter_get_authentication_user function, which allows local users to cause a denial of service (NULL pointer dereference) via an empty username."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "64679",
              "refsource": "BID",
              "url": "http://www.securityfocus.com/bid/64679"
            },
            {
              "name": "FEDORA-2014-1648",
              "refsource": "FEDORA",
              "url": "http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128150.html"
            },
            {
              "name": "https://bugzilla.novell.com/show_bug.cgi?id=857303",
              "refsource": "CONFIRM",
              "url": "https://bugzilla.novell.com/show_bug.cgi?id=857303"
            },
            {
              "name": "[oss-security] 20140107 Re: CVE request: lightdm-gtk-greeter - local DOS due to NULL pointer dereference",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2014/01/07/15"
            },
            {
              "name": "FEDORA-2014-1647",
              "refsource": "FEDORA",
              "url": "http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128117.html"
            },
            {
              "name": "openSUSE-SU-2014:0071",
              "refsource": "SUSE",
              "url": "http://lists.opensuse.org/opensuse-updates/2014-01/msg00048.html"
            },
            {
              "name": "56211",
              "refsource": "SECUNIA",
              "url": "http://secunia.com/advisories/56211"
            },
            {
              "name": "https://bugs.launchpad.net/lightdm-gtk-greeter/+bug/1266449",
              "refsource": "CONFIRM",
              "url": "https://bugs.launchpad.net/lightdm-gtk-greeter/+bug/1266449"
            },
            {
              "name": "56423",
              "refsource": "SECUNIA",
              "url": "http://secunia.com/advisories/56423"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2014-0979",
    "datePublished": "2014-01-23T01:00:00.000Z",
    "dateReserved": "2014-01-07T00:00:00.000Z",
    "dateUpdated": "2024-08-06T09:34:40.438Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2014-0979",
      "date": "2026-06-03",
      "epss": "0.00069",
      "percentile": "0.21252"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2014-0979\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2014-01-23T01:55:04.460\",\"lastModified\":\"2026-04-29T01:13:23.040\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The start_authentication function in lightdm-gtk-greeter.c in LightDM GTK+ Greeter before 1.7.1 does not properly handle the return value from the lightdm_greeter_get_authentication_user function, which allows local users to cause a denial of service (NULL pointer dereference) via an empty username.\"},{\"lang\":\"es\",\"value\":\"La funci\u00f3n start_authentication en lightdm-gtk-greeter.c de LightDM GTK+ Greeter anterior a la versi\u00f3n 1.7.1 no maneja adecuadamente el valor desde la funci\u00f3n lightdm_greeter_get_authentication_user, lo que permite a usuarios locales provocar una denegaci\u00f3n de servicio (dereferencia a puntero nulo) a trav\u00e9s de un nombre de usuario vac\u00edo.\"}],\"metrics\":{\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:L/Au:N/C:N/I:N/A:P\",\"baseScore\":2.1,\"accessVector\":\"LOCAL\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"LOW\",\"exploitabilityScore\":3.9,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-Other\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:opensuse:opensuse:12.2:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D806A17E-B8F9-466D-807D-3F1E77603DC8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:opensuse:opensuse:12.3:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DFBF430B-0832-44B0-AA0E-BA9E467F7668\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A10BC294-9196-425F-9FB0-B1625465B47F\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:lightdm_gtk\\\\+_greeter_project:lightdm_gtk\\\\+_greeter:*:*:*:*:*:*:*:*\",\"versionEndIncluding\":\"1.7.0\",\"matchCriteriaId\":\"F4789405-AA43-4E89-9400-B8DD43CFE55B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:lightdm_gtk\\\\+_greeter_project:lightdm_gtk\\\\+_greeter:1.1.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"85D39613-2BDD-4503-A77A-A0EA257C2B67\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:lightdm_gtk\\\\+_greeter_project:lightdm_gtk\\\\+_greeter:1.1.2:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"50D021C1-9E9D-43AB-9F4D-FF675F81222F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:lightdm_gtk\\\\+_greeter_project:lightdm_gtk\\\\+_greeter:1.1.3:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C89217FB-6080-4D10-A109-8206D9F06BAA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:lightdm_gtk\\\\+_greeter_project:lightdm_gtk\\\\+_greeter:1.1.4:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"1C5A90F3-0B68-4E45-8193-739FA9626B0D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:lightdm_gtk\\\\+_greeter_project:lightdm_gtk\\\\+_greeter:1.1.5:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"09717FA8-CCE4-45B3-9328-035A34C1828F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:lightdm_gtk\\\\+_greeter_project:lightdm_gtk\\\\+_greeter:1.1.6:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"F05C06E7-16D0-417D-8080-ED2964C57590\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:lightdm_gtk\\\\+_greeter_project:lightdm_gtk\\\\+_greeter:1.3.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"048C3F4F-2B46-4B17-9EDC-6155B20D6EB7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:lightdm_gtk\\\\+_greeter_project:lightdm_gtk\\\\+_greeter:1.3.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"758DDB75-14ED-4EC2-A6AA-F919CAEE8794\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:lightdm_gtk\\\\+_greeter_project:lightdm_gtk\\\\+_greeter:1.5.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"14158AEF-1D52-467F-84AD-A96E2B82612A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:lightdm_gtk\\\\+_greeter_project:lightdm_gtk\\\\+_greeter:1.5.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E9908043-959C-4A59-8AD6-1B9CE1525FC8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:lightdm_gtk\\\\+_greeter_project:lightdm_gtk\\\\+_greeter:1.5.2:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"0544FB24-056C-4915-8771-C2FDA4AE4D4F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:lightdm_gtk\\\\+_greeter_project:lightdm_gtk\\\\+_greeter:1.6.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"14A940B8-4CAB-4352-A213-EE5EAC7C938A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:lightdm_gtk\\\\+_greeter_project:lightdm_gtk\\\\+_greeter:1.6.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"2C7878C5-5F71-422F-9F58-61193CF2C066\"}]}]}],\"references\":[{\"url\":\"http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128117.html\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128150.html\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://lists.opensuse.org/opensuse-updates/2014-01/msg00048.html\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://secunia.com/advisories/56211\",\"source\":\"cve@mitre.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"http://secunia.com/advisories/56423\",\"source\":\"cve@mitre.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"http://www.openwall.com/lists/oss-security/2014/01/07/15\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://www.securityfocus.com/bid/64679\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://bugs.launchpad.net/lightdm-gtk-greeter/+bug/1266449\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://bugzilla.novell.com/show_bug.cgi?id=857303\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128117.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128150.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://lists.opensuse.org/opensuse-updates/2014-01/msg00048.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://secunia.com/advisories/56211\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"http://secunia.com/advisories/56423\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"http://www.openwall.com/lists/oss-security/2014/01/07/15\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.securityfocus.com/bid/64679\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://bugs.launchpad.net/lightdm-gtk-greeter/+bug/1266449\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://bugzilla.novell.com/show_bug.cgi?id=857303\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}],\"evaluatorComment\":\"Per: http://cwe.mitre.org/data/definitions/476.html\\n\\n\\\"CWE-476: NULL Pointer Dereference\\\"\"}}"
  }
}


Log in or create an account to share your comment.




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.