Vulnerability-Lookup

FKIE_CVE-2018-15858

Vulnerability from fkie_nvd - Published: 2018-08-25 21:29 - Updated: 2026-06-17 01:43

Severity

5.5 (Medium) - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

Unchecked NULL pointer usage when handling invalid aliases in CopyKeyAliasesToKeymap in xkbcomp/keycodes.c in xkbcommon before 0.8.1 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file.

References

URL	Tags
cve@mitre.org	https://github.com/xkbcommon/libxkbcommon/commit/badb428e63387140720f22486b3acbd3d738859f	Patch, Third Party Advisory
cve@mitre.org	https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html	Mailing List, Patch, Third Party Advisory
cve@mitre.org	https://security.gentoo.org/glsa/201810-05	Third Party Advisory
cve@mitre.org	https://usn.ubuntu.com/3786-1/	Third Party Advisory
cve@mitre.org	https://usn.ubuntu.com/3786-2/	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/xkbcommon/libxkbcommon/commit/badb428e63387140720f22486b3acbd3d738859f	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html	Mailing List, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://security.gentoo.org/glsa/201810-05	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://usn.ubuntu.com/3786-1/	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://usn.ubuntu.com/3786-2/	Third Party Advisory

Impacted products

Vendor	Product	Version
xkbcommon	libxkbcommon	*
xkbcommon	xkbcommon	*
canonical	ubuntu_linux	14.04
canonical	ubuntu_linux	16.04
canonical	ubuntu_linux	18.04

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:xkbcommon:libxkbcommon:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "33CC7ED5-C297-470D-B26A-25D0EB694460",
              "versionEndExcluding": "0.8.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:xkbcommon:xkbcommon:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C7D955F4-3540-42A7-8551-EA1A266DDEA6",
              "versionEndExcluding": "0.8.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*",
              "matchCriteriaId": "B5A6F2F3-4894-4392-8296-3B8DD2679084",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
              "matchCriteriaId": "F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
              "matchCriteriaId": "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Unchecked NULL pointer usage when handling invalid aliases in CopyKeyAliasesToKeymap in xkbcomp/keycodes.c in xkbcommon before 0.8.1 could be used by local attackers to crash (NULL pointer dereference) the xkbcommon parser by supplying a crafted keymap file."
    },
    {
      "lang": "es",
      "value": "El uso de un puntero NULL no verificado al gestionar alias inv\u00e1lidos en CopyKeyAliasesToKeymap en xkbcomp/keycodes.c en xkbcommon, en versiones anteriores a la 0.8.1, podr\u00eda ser aprovechado por atacantes locales para provocar el cierre inesperado (desreferencia de puntero NULL) del analizador xkbcommon proporcionando un archivo keymap manipulado."
    }
  ],
  "id": "CVE-2018-15858",
  "lastModified": "2026-06-17T01:43:13.163",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": true,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 2.1,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P",
          "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": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2018-08-25T21:29:02.063",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/xkbcommon/libxkbcommon/commit/badb428e63387140720f22486b3acbd3d738859f"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Mailing List",
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://security.gentoo.org/glsa/201810-05"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://usn.ubuntu.com/3786-1/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://usn.ubuntu.com/3786-2/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/xkbcommon/libxkbcommon/commit/badb428e63387140720f22486b3acbd3d738859f"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://security.gentoo.org/glsa/201810-05"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://usn.ubuntu.com/3786-1/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://usn.ubuntu.com/3786-2/"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2018-15858 (GCVE-0-2018-15858)

Vulnerability from cvelistv5 – Published: 2018-08-25 21:00 – Updated: 2024-08-05 10:10

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

5 references

URL	Tags
https://github.com/xkbcommon/libxkbcommon/commit/…	x_refsource_MISC
https://security.gentoo.org/glsa/201810-05	vendor-advisoryx_refsource_GENTOO
https://usn.ubuntu.com/3786-1/	vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3786-2/	vendor-advisoryx_refsource_UBUNTU
https://lists.freedesktop.org/archives/wayland-de…	x_refsource_MISC

Date Public

2018-08-25 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T10:10:05.434Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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            ],
            "url": "https://github.com/xkbcommon/libxkbcommon/commit/badb428e63387140720f22486b3acbd3d738859f"
          },
          {
            "name": "GLSA-201810-05",
            "tags": [
              "vendor-advisory",
              "x_refsource_GENTOO",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/201810-05"
          },
          {
            "name": "USN-3786-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/3786-1/"
          },
          {
            "name": "USN-3786-2",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/3786-2/"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
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        }
      ],
      "problemTypes": [
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      "providerMetadata": {
        "dateUpdated": "2018-11-07T10:57:01.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
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          "url": "https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html"
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    "dateUpdated": "2024-08-05T10:10:05.434Z",
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}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

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FKIE_CVE-2018-15858

CVE-2018-15858 (GCVE-0-2018-15858)

Tags

Sightings

Nomenclature

Related by attack behaviour