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CVE-2012-6648

Status: ModifiedLow (2.1)—

gdm/guest-session-cleanup.sh in gdm-guest-session 0.24 and earlier, as used in Ubuntu Linux 10.04 LTS, 10.10, and 11.04, allows local users to delete arbitrary files via a space in the name of a file in /tmp. NOTE: this identifier was SPLIT from CVE-2012-0943 per ADT1/ADT2 due to different codebases and affected versions. CVE-2012-0943 is used for the guest-account issue.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (2)

Canonical — Ubuntu LinuxGdm-guest-session Project — Gdm-guest-session

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2012-6648",
  "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": "2014-05-22T23:55:03.003",
  "references": [
    {
      "url": "http://ubuntu.com/usn/usn-1399-1",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://bugs.launchpad.net/ubuntu/%2Bsource/lightdm/%2Bbug/953044",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://launchpadlibrarian.net/96474113/gdm-guest-session.secure-cleanup.debdiff",
      "source": "cve@mitre.org"
    },
    {
      "url": "http://ubuntu.com/usn/usn-1399-1",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugs.launchpad.net/ubuntu/%2Bsource/lightdm/%2Bbug/953044",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://launchpadlibrarian.net/96474113/gdm-guest-session.secure-cleanup.debdiff",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-264"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "gdm/guest-session-cleanup.sh in gdm-guest-session 0.24 and earlier, as used in Ubuntu Linux 10.04 LTS, 10.10, and 11.04, allows local users to delete arbitrary files via a space in the name of a file in /tmp. NOTE: this identifier was SPLIT from CVE-2012-0943 per ADT1/ADT2 due to different codebases and affected versions. CVE-2012-0943 is used for the guest-account issue."
    },
    {
      "lang": "es",
      "value": "gdm/guest-session-cleanup.sh en gdm-guest-session 0.24 y anteriores, utilizado en Ubuntu Linux 10.04 LTS, 10.10 y 11.04, permite a usuarios locales eliminar archivos arbitrarios a través de un espacio en el nombre de un archivo en /tmp. NOTA: este identificador fue dividido (SPLIT) de CVE-2012-0943 por ADT1/ADT2 debido a bases de código y versiones afectadas diferentes. CVE-2012-0943 se utiliza para el asunto guest-account."
    }
  ],
  "lastModified": "2026-06-16T23:48:32.997",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:gdm-guest-session_project:gdm-guest-session:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "44B39902-CE75-4ACC-8FF0-DEDCE6D4BEF9",
              "versionEndIncluding": "0.24"
            },
            {
              "criteria": "cpe:2.3:a:gdm-guest-session_project:gdm-guest-session:0.20:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8E7ACFB5-27E5-44A0-9C35-6270BB5520A1"
            },
            {
              "criteria": "cpe:2.3:a:gdm-guest-session_project:gdm-guest-session:0.21:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "685F8494-C197-43C3-9D04-54A82EF0D9EF"
            },
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              "criteria": "cpe:2.3:a:gdm-guest-session_project:gdm-guest-session:0.22:*:*:*:*:*:*:*",
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              "matchCriteriaId": "94A2CD0F-8037-45F7-8DE0-12C938B3C010"
            },
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              "vulnerable": true,
              "matchCriteriaId": "AAAB6195-632A-450F-B556-306E35957D57"
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:10.04:-:lts:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7118F616-25CA-4E34-AA13-4D14BB62419F"
            },
            {
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              "vulnerable": true,
              "matchCriteriaId": "87614B58-24AB-49FB-9C84-E8DDBA16353B"
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:11.04:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "EF49D26F-142E-468B-87C1-BABEA445255C"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}