GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2018-15853 (GCVE-0-2018-15853)

Vulnerability from cvelistv5 – Published: 2018-08-25 21:00 – Updated: 2024-08-05 10:10
VLAI
Summary
Endless recursion exists in xkbcomp/expr.c in xkbcommon and libxkbcommon before 0.8.1, which could be used by local attackers to crash xkbcommon users by supplying a crafted keymap file that triggers boolean negation.
CWE
  • n/a
References
URL Tags
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
https://github.com/xkbcommon/libxkbcommon/commit/… x_refsource_MISC
https://access.redhat.com/errata/RHSA-2019:2079 vendor-advisoryx_refsource_REDHAT
Date Public
2018-08-25 00:00
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T10:10:04.991Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "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"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/xkbcommon/libxkbcommon/commit/1f9d1248c07cda8aaff762429c0dce146de8632a"
          },
          {
            "name": "RHSA-2019:2079",
            "tags": [
              "vendor-advisory",
              "x_refsource_REDHAT",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2019:2079"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2018-08-25T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Endless recursion exists in xkbcomp/expr.c in xkbcommon and libxkbcommon before 0.8.1, which could be used by local attackers to crash xkbcommon users by supplying a crafted keymap file that triggers boolean negation."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2019-08-06T16:06:20.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "name": "GLSA-201810-05",
          "tags": [
            "vendor-advisory",
            "x_refsource_GENTOO"
          ],
          "url": "https://security.gentoo.org/glsa/201810-05"
        },
        {
          "name": "USN-3786-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/3786-1/"
        },
        {
          "name": "USN-3786-2",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/3786-2/"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/xkbcommon/libxkbcommon/commit/1f9d1248c07cda8aaff762429c0dce146de8632a"
        },
        {
          "name": "RHSA-2019:2079",
          "tags": [
            "vendor-advisory",
            "x_refsource_REDHAT"
          ],
          "url": "https://access.redhat.com/errata/RHSA-2019:2079"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2018-15853",
          "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": "Endless recursion exists in xkbcomp/expr.c in xkbcommon and libxkbcommon before 0.8.1, which could be used by local attackers to crash xkbcommon users by supplying a crafted keymap file that triggers boolean negation."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "GLSA-201810-05",
              "refsource": "GENTOO",
              "url": "https://security.gentoo.org/glsa/201810-05"
            },
            {
              "name": "USN-3786-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/3786-1/"
            },
            {
              "name": "USN-3786-2",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/3786-2/"
            },
            {
              "name": "https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html",
              "refsource": "MISC",
              "url": "https://lists.freedesktop.org/archives/wayland-devel/2018-August/039232.html"
            },
            {
              "name": "https://github.com/xkbcommon/libxkbcommon/commit/1f9d1248c07cda8aaff762429c0dce146de8632a",
              "refsource": "MISC",
              "url": "https://github.com/xkbcommon/libxkbcommon/commit/1f9d1248c07cda8aaff762429c0dce146de8632a"
            },
            {
              "name": "RHSA-2019:2079",
              "refsource": "REDHAT",
              "url": "https://access.redhat.com/errata/RHSA-2019:2079"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2018-15853",
    "datePublished": "2018-08-25T21:00:00.000Z",
    "dateReserved": "2018-08-24T00:00:00.000Z",
    "dateUpdated": "2024-08-05T10:10:04.991Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2018-15853",
      "date": "2026-09-19",
      "epss": "0.00539",
      "percentile": "0.44296"
    },
    "fkie_nvd": {
      "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"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Endless recursion exists in xkbcomp/expr.c in xkbcommon and libxkbcommon before 0.8.1, which could be used by local attackers to crash xkbcommon users by supplying a crafted keymap file that triggers boolean negation."
        },
        {
          "lang": "es",
          "value": "Existe recursi\u00f3n infinita en xkbcomp/expr.c en xkbcommon y libxkbcommon en versiones anteriores a la 0.8.1, lo que podr\u00eda ser empleado por atacantes locales para provocar el cierre inesperado de usuarios xkbcommon proporcionando un archivo keymap manipulado que desencadena la negaci\u00f3n booleana."
        }
      ],
      "id": "CVE-2018-15853",
      "lastModified": "2024-11-21T03:51:34.440",
      "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": "2018-08-25T21:29:01.483",
      "references": [
        {
          "source": "cve@mitre.org",
          "url": "https://access.redhat.com/errata/RHSA-2019:2079"
        },
        {
          "source": "cve@mitre.org",
          "tags": [
            "Patch",
            "Third Party Advisory"
          ],
          "url": "https://github.com/xkbcommon/libxkbcommon/commit/1f9d1248c07cda8aaff762429c0dce146de8632a"
        },
        {
          "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",
          "url": "https://access.redhat.com/errata/RHSA-2019:2079"
        },
        {
          "source": "af854a3a-2127-422b-91ae-364da2661108",
          "tags": [
            "Patch",
            "Third Party Advisory"
          ],
          "url": "https://github.com/xkbcommon/libxkbcommon/commit/1f9d1248c07cda8aaff762429c0dce146de8632a"
        },
        {
          "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-400"
            }
          ],
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "nvd": {
      "cve": {
        "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": "Endless recursion exists in xkbcomp/expr.c in xkbcommon and libxkbcommon before 0.8.1, which could be used by local attackers to crash xkbcommon users by supplying a crafted keymap file that triggers boolean negation."
          },
          {
            "lang": "es",
            "value": "Existe recursi\u00f3n infinita en xkbcomp/expr.c en xkbcommon y libxkbcommon en versiones anteriores a la 0.8.1, lo que podr\u00eda ser empleado por atacantes locales para provocar el cierre inesperado de usuarios xkbcommon proporcionando un archivo keymap manipulado que desencadena la negaci\u00f3n booleana."
          }
        ],
        "id": "CVE-2018-15853",
        "lastModified": "2024-11-21T03:51:34.440",
        "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": "2018-08-25T21:29:01.483",
        "references": [
          {
            "source": "cve@mitre.org",
            "url": "https://access.redhat.com/errata/RHSA-2019:2079"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://github.com/xkbcommon/libxkbcommon/commit/1f9d1248c07cda8aaff762429c0dce146de8632a"
          },
          {
            "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",
            "url": "https://access.redhat.com/errata/RHSA-2019:2079"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Patch",
              "Third Party Advisory"
            ],
            "url": "https://github.com/xkbcommon/libxkbcommon/commit/1f9d1248c07cda8aaff762429c0dce146de8632a"
          },
          {
            "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-400"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-30T10:19:59+00:00",
      "cve": "CVE-2018-15853",
      "id": "CVE-2018-15853",
      "initial_release_date": "2018-03-10T00:00:00+00:00",
      "product_status:fixed": "371",
      "product_status:known_affected": "2",
      "product_status:known_not_affected": "4",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "libxkbcommon: xkbcomp: Endless recursion in xkbcomp/expr.c resulting in a crash",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2018/cve-2018-15853.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "low",
      "current_release_date": "2026-09-14T00:04:04Z",
      "cve": "CVE-2018-15853",
      "id": "CVE-2018-15853",
      "initial_release_date": "2023-02-15T04:24:49Z",
      "product_status:known_affected": "574",
      "product_status:known_not_affected": "55",
      "product_status:recommended": "431",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2018-15853",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2018-15853.json",
      "version": "68"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

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.

Loading…

Detection rules are retrieved from Rulezet.

Loading…

Loading…

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.


Loading…