CVE-2014-0979
Estado: ModificadaBaja (2.1)—
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.
CVSS
- Versión: 2.0
- Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P
- Puntuación base: 2.1
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.41%
- Percentil entre todas las CVEs puntuadas: 33
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (2)
CWE
- NVD-CWE-Other
Referencias
- http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128117.html
- http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128150.html
- http://lists.opensuse.org/opensuse-updates/2014-01/msg00048.html
- http://secunia.com/advisories/56211
- http://secunia.com/advisories/56423
- http://www.openwall.com/lists/oss-security/2014/01/07/15
- http://www.securityfocus.com/bid/64679
- https://bugs.launchpad.net/lightdm-gtk-greeter/+bug/1266449
- https://bugzilla.novell.com/show_bug.cgi?id=857303
- http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128117.html
- http://lists.fedoraproject.org/pipermail/package-announce/2014-February/128150.html
- http://lists.opensuse.org/opensuse-updates/2014-01/msg00048.html
- http://secunia.com/advisories/56211
- http://secunia.com/advisories/56423
- http://www.openwall.com/lists/oss-security/2014/01/07/15
- http://www.securityfocus.com/bid/64679
- https://bugs.launchpad.net/lightdm-gtk-greeter/+bug/1266449
- https://bugzilla.novell.com/show_bug.cgi?id=857303
JSON original (NVD)
Mostrar
{
"id": "CVE-2014-0979",
"cveTags": [],
"metrics": {
"cvssMetricV2": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"version": "2.0",
"baseScore": 2.1,
"accessVector": "LOCAL",
"vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P",
"authentication": "NONE",
"integrityImpact": "NONE",
"accessComplexity": "LOW",
"availabilityImpact": "PARTIAL",
"confidentialityImpact": "NONE"
},
"acInsufInfo": false,
"impactScore": 2.9,
"baseSeverity": "LOW",
"obtainAllPrivilege": false,
"exploitabilityScore": 3.9,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
]
},
"affected": [
{
"source": "cve@mitre.org",
"affectedData": [
{
"vendor": "n/a",
"product": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
]
}
],
"published": "2014-01-23T01:55:04.460",
"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",
"tags": [
"Vendor Advisory"
],
"source": "cve@mitre.org"
},
{
"url": "http://secunia.com/advisories/56423",
"tags": [
"Vendor Advisory"
],
"source": "cve@mitre.org"
},
{
"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",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"url": "http://secunia.com/advisories/56423",
"tags": [
"Vendor Advisory"
],
"source": "af854a3a-2127-422b-91ae-364da2661108"
},
{
"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"
}
],
"vulnStatus": "Modified",
"weaknesses": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "NVD-CWE-Other"
}
]
}
],
"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 función start_authentication en lightdm-gtk-greeter.c de LightDM GTK+ Greeter anterior a la versión 1.7.1 no maneja adecuadamente el valor desde la función lightdm_greeter_get_authentication_user, lo que permite a usuarios locales provocar una denegación de servicio (dereferencia a puntero nulo) a través de un nombre de usuario vacío."
}
],
"lastModified": "2026-06-17T00:03:57.420",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:opensuse:opensuse:12.2:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "D806A17E-B8F9-466D-807D-3F1E77603DC8"
},
{
"criteria": "cpe:2.3:o:opensuse:opensuse:12.3:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "DFBF430B-0832-44B0-AA0E-BA9E467F7668"
},
{
"criteria": "cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A10BC294-9196-425F-9FB0-B1625465B47F"
}
],
"operator": "OR"
}
]
},
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:lightdm_gtk\\+_greeter_project:lightdm_gtk\\+_greeter:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F4789405-AA43-4E89-9400-B8DD43CFE55B",
"versionEndIncluding": "1.7.0"
},
{
"criteria": "cpe:2.3:a:lightdm_gtk\\+_greeter_project:lightdm_gtk\\+_greeter:1.1.1:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "85D39613-2BDD-4503-A77A-A0EA257C2B67"
},
{
"criteria": "cpe:2.3:a:lightdm_gtk\\+_greeter_project:lightdm_gtk\\+_greeter:1.1.2:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "50D021C1-9E9D-43AB-9F4D-FF675F81222F"
},
{
"criteria": "cpe:2.3:a:lightdm_gtk\\+_greeter_project:lightdm_gtk\\+_greeter:1.1.3:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C89217FB-6080-4D10-A109-8206D9F06BAA"
},
{
"criteria": "cpe:2.3:a:lightdm_gtk\\+_greeter_project:lightdm_gtk\\+_greeter:1.1.4:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1C5A90F3-0B68-4E45-8193-739FA9626B0D"
},
{
"criteria": "cpe:2.3:a:lightdm_gtk\\+_greeter_project:lightdm_gtk\\+_greeter:1.1.5:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "09717FA8-CCE4-45B3-9328-035A34C1828F"
},
{
"criteria": "cpe:2.3:a:lightdm_gtk\\+_greeter_project:lightdm_gtk\\+_greeter:1.1.6:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F05C06E7-16D0-417D-8080-ED2964C57590"
},
{
"criteria": "cpe:2.3:a:lightdm_gtk\\+_greeter_project:lightdm_gtk\\+_greeter:1.3.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "048C3F4F-2B46-4B17-9EDC-6155B20D6EB7"
},
{
"criteria": "cpe:2.3:a:lightdm_gtk\\+_greeter_project:lightdm_gtk\\+_greeter:1.3.1:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "758DDB75-14ED-4EC2-A6AA-F919CAEE8794"
},
{
"criteria": "cpe:2.3:a:lightdm_gtk\\+_greeter_project:lightdm_gtk\\+_greeter:1.5.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "14158AEF-1D52-467F-84AD-A96E2B82612A"
},
{
"criteria": "cpe:2.3:a:lightdm_gtk\\+_greeter_project:lightdm_gtk\\+_greeter:1.5.1:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "E9908043-959C-4A59-8AD6-1B9CE1525FC8"
},
{
"criteria": "cpe:2.3:a:lightdm_gtk\\+_greeter_project:lightdm_gtk\\+_greeter:1.5.2:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "0544FB24-056C-4915-8771-C2FDA4AE4D4F"
},
{
"criteria": "cpe:2.3:a:lightdm_gtk\\+_greeter_project:lightdm_gtk\\+_greeter:1.6.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "14A940B8-4CAB-4352-A213-EE5EAC7C938A"
},
{
"criteria": "cpe:2.3:a:lightdm_gtk\\+_greeter_project:lightdm_gtk\\+_greeter:1.6.1:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "2C7878C5-5F71-422F-9F58-61193CF2C066"
}
],
"operator": "OR"
}
]
}
],
"evaluatorComment": "Per: http://cwe.mitre.org/data/definitions/476.html\n\n\"CWE-476: NULL Pointer Dereference\"",
"sourceIdentifier": "cve@mitre.org"
}