CVE-2019-20393 (GCVE-0-2019-20393)

Vulnerability from cvelistv5 – Published: 2020-01-22 00:00 – Updated: 2024-08-05 02:39
VLAI?
Summary
A double-free is present in libyang before v1.0-r1 in the function yyparse() when an empty description is used. Applications that use libyang to parse untrusted input yang files may be vulnerable to this flaw, which would cause a crash or potentially code execution.
Severity ?
No CVSS data available.
CWE
  • n/a
Assigner
References
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T02:39:09.836Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/CESNET/libyang/issues/742"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/CESNET/libyang/commit/d9feacc4a590d35dbc1af21caf9080008b4450ed"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1793930"
          },
          {
            "name": "[debian-lts-announce] 20230919 [SECURITY] [DLA 3572-1] libyang security update",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A double-free is present in libyang before v1.0-r1 in the function yyparse() when an empty description is used. Applications that use libyang to parse untrusted input yang files may be vulnerable to this flaw, which would cause a crash or potentially code execution."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-09-19T21:06:16.669404",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1"
        },
        {
          "url": "https://github.com/CESNET/libyang/issues/742"
        },
        {
          "url": "https://github.com/CESNET/libyang/commit/d9feacc4a590d35dbc1af21caf9080008b4450ed"
        },
        {
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1793930"
        },
        {
          "name": "[debian-lts-announce] 20230919 [SECURITY] [DLA 3572-1] libyang security update",
          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2019-20393",
    "datePublished": "2020-01-22T00:00:00",
    "dateReserved": "2020-01-22T00:00:00",
    "dateUpdated": "2024-08-05T02:39:09.836Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:cesnet:libyang:0.11:r1:*:*:*:*:*:*\", \"matchCriteriaId\": \"65E91322-5F67-43C2-8112-5ECAEC2A3C12\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:cesnet:libyang:0.11:r2:*:*:*:*:*:*\", \"matchCriteriaId\": \"80A88DE4-93F8-40C3-AA52-A5F353F028AA\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:cesnet:libyang:0.12:r1:*:*:*:*:*:*\", \"matchCriteriaId\": \"05C120CA-50EF-4B6D-92C9-ED736219DB07\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:cesnet:libyang:0.12:r2:*:*:*:*:*:*\", \"matchCriteriaId\": \"99D1FA55-3F56-4E09-B41E-B05C199B96B8\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:cesnet:libyang:0.13:r1:*:*:*:*:*:*\", \"matchCriteriaId\": \"35D48EC4-58D2-49C6-8049-920787733587\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:cesnet:libyang:0.13:r2:*:*:*:*:*:*\", \"matchCriteriaId\": \"B57F3953-49D6-413C-A4AE-03125935FC77\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:cesnet:libyang:0.14:r1:*:*:*:*:*:*\", \"matchCriteriaId\": \"DD62411F-A524-4E80-B540-780EA39CB6A4\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:cesnet:libyang:0.15:r1:*:*:*:*:*:*\", \"matchCriteriaId\": \"FEF091B1-978A-4881-B1FC-6848CD1A7BBF\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:cesnet:libyang:0.16:r1:*:*:*:*:*:*\", \"matchCriteriaId\": \"0C50D690-9A4D-4B78-BF4E-A4D9B4074216\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:cesnet:libyang:0.16:r2:*:*:*:*:*:*\", \"matchCriteriaId\": \"124A5D30-7451-4516-9AA2-963AE62DD679\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:cesnet:libyang:0.16:r3:*:*:*:*:*:*\", \"matchCriteriaId\": \"C260D13B-82E9-4596-9116-61073B42D661\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"A double-free is present in libyang before v1.0-r1 in the function yyparse() when an empty description is used. Applications that use libyang to parse untrusted input yang files may be vulnerable to this flaw, which would cause a crash or potentially code execution.\"}, {\"lang\": \"es\", \"value\": \"Una doble liberaci\\u00f3n est\\u00e1 presente en libyang versiones anteriores a v1.0-r1, en la funci\\u00f3n yyparse() cuando es usada una descripci\\u00f3n vac\\u00eda. Las aplicaciones que usan libyang para analizar archivos de entrada yang no confiables pueden ser vulnerables a este fallo, lo que podr\\u00eda causar un bloqueo o potencialmente una ejecuci\\u00f3n de c\\u00f3digo.\"}]",
      "id": "CVE-2019-20393",
      "lastModified": "2024-11-21T04:38:22.720",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\", \"baseScore\": 8.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"REQUIRED\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 2.8, \"impactScore\": 5.9}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:M/Au:N/C:P/I:P/A:P\", \"baseScore\": 6.8, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"MEDIUM\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"PARTIAL\", \"integrityImpact\": \"PARTIAL\", \"availabilityImpact\": \"PARTIAL\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 8.6, \"impactScore\": 6.4, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": true}]}",
      "published": "2020-01-22T22:15:10.237",
      "references": "[{\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=1793930\", \"source\": \"cve@mitre.org\", \"tags\": [\"Issue Tracking\", \"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://github.com/CESNET/libyang/commit/d9feacc4a590d35dbc1af21caf9080008b4450ed\", \"source\": \"cve@mitre.org\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1\", \"source\": \"cve@mitre.org\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://github.com/CESNET/libyang/issues/742\", \"source\": \"cve@mitre.org\", \"tags\": [\"Exploit\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html\", \"source\": \"cve@mitre.org\"}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=1793930\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Issue Tracking\", \"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://github.com/CESNET/libyang/commit/d9feacc4a590d35dbc1af21caf9080008b4450ed\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\", \"Third Party Advisory\"]}, {\"url\": \"https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://github.com/CESNET/libyang/issues/742\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Exploit\", \"Third Party Advisory\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
      "sourceIdentifier": "cve@mitre.org",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-415\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2019-20393\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2020-01-22T22:15:10.237\",\"lastModified\":\"2024-11-21T04:38:22.720\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A double-free is present in libyang before v1.0-r1 in the function yyparse() when an empty description is used. Applications that use libyang to parse untrusted input yang files may be vulnerable to this flaw, which would cause a crash or potentially code execution.\"},{\"lang\":\"es\",\"value\":\"Una doble liberaci\u00f3n est\u00e1 presente en libyang versiones anteriores a v1.0-r1, en la funci\u00f3n yyparse() cuando es usada una descripci\u00f3n vac\u00eda. Las aplicaciones que usan libyang para analizar archivos de entrada yang no confiables pueden ser vulnerables a este fallo, lo que podr\u00eda causar un bloqueo o potencialmente una ejecuci\u00f3n de c\u00f3digo.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H\",\"baseScore\":8.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"REQUIRED\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.8,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:P/I:P/A:P\",\"baseScore\":6.8,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":true}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-415\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cesnet:libyang:0.11:r1:*:*:*:*:*:*\",\"matchCriteriaId\":\"65E91322-5F67-43C2-8112-5ECAEC2A3C12\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cesnet:libyang:0.11:r2:*:*:*:*:*:*\",\"matchCriteriaId\":\"80A88DE4-93F8-40C3-AA52-A5F353F028AA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cesnet:libyang:0.12:r1:*:*:*:*:*:*\",\"matchCriteriaId\":\"05C120CA-50EF-4B6D-92C9-ED736219DB07\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cesnet:libyang:0.12:r2:*:*:*:*:*:*\",\"matchCriteriaId\":\"99D1FA55-3F56-4E09-B41E-B05C199B96B8\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cesnet:libyang:0.13:r1:*:*:*:*:*:*\",\"matchCriteriaId\":\"35D48EC4-58D2-49C6-8049-920787733587\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cesnet:libyang:0.13:r2:*:*:*:*:*:*\",\"matchCriteriaId\":\"B57F3953-49D6-413C-A4AE-03125935FC77\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cesnet:libyang:0.14:r1:*:*:*:*:*:*\",\"matchCriteriaId\":\"DD62411F-A524-4E80-B540-780EA39CB6A4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cesnet:libyang:0.15:r1:*:*:*:*:*:*\",\"matchCriteriaId\":\"FEF091B1-978A-4881-B1FC-6848CD1A7BBF\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cesnet:libyang:0.16:r1:*:*:*:*:*:*\",\"matchCriteriaId\":\"0C50D690-9A4D-4B78-BF4E-A4D9B4074216\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cesnet:libyang:0.16:r2:*:*:*:*:*:*\",\"matchCriteriaId\":\"124A5D30-7451-4516-9AA2-963AE62DD679\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:cesnet:libyang:0.16:r3:*:*:*:*:*:*\",\"matchCriteriaId\":\"C260D13B-82E9-4596-9116-61073B42D661\"}]}]}],\"references\":[{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=1793930\",\"source\":\"cve@mitre.org\",\"tags\":[\"Issue Tracking\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/CESNET/libyang/commit/d9feacc4a590d35dbc1af21caf9080008b4450ed\",\"source\":\"cve@mitre.org\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/CESNET/libyang/issues/742\",\"source\":\"cve@mitre.org\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html\",\"source\":\"cve@mitre.org\"},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=1793930\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Issue Tracking\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/CESNET/libyang/commit/d9feacc4a590d35dbc1af21caf9080008b4450ed\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://github.com/CESNET/libyang/issues/742\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.