GSD-2021-28906

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
In function read_yin_leaf() in libyang <= v1.0.225, it doesn't check whether the value of retval->ext[r] is NULL. In some cases, it can be NULL, which leads to the operation of retval->ext[r]->flags that results in a crash.
Aliases
Aliases
CVE-2021-28906
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{
  "GSD": {
    "alias": "CVE-2021-28906",
    "description": "In function read_yin_leaf() in libyang \u003c= v1.0.225, it doesn\u0027t check whether the value of retval-\u003eext[r] is NULL. In some cases, it can be NULL, which leads to the operation of retval-\u003eext[r]-\u003eflags that results in a crash.",
    "id": "GSD-2021-28906",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-28906.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-28906"
      ],
      "details": "In function read_yin_leaf() in libyang \u003c= v1.0.225, it doesn\u0027t check whether the value of retval-\u003eext[r] is NULL. In some cases, it can be NULL, which leads to the operation of retval-\u003eext[r]-\u003eflags that results in a crash.",
      "id": "GSD-2021-28906",
      "modified": "2023-12-13T01:23:28.782159Z",
      "schema_version": "1.4.0"
    }
  },
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        "ID": "CVE-2021-28906",
        "STATE": "PUBLIC"
      },
      "affects": {
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                  {
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                    "version": {
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            "value": "In function read_yin_leaf() in libyang \u003c= v1.0.225, it doesn\u0027t check whether the value of retval-\u003eext[r] is NULL. In some cases, it can be NULL, which leads to the operation of retval-\u003eext[r]-\u003eflags that results in a crash."
          }
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      "problemtype": {
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                "lang": "eng",
                "value": "n/a"
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      "references": {
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          {
            "name": "https://github.com/CESNET/libyang/issues/1455",
            "refsource": "CONFIRM",
            "url": "https://github.com/CESNET/libyang/issues/1455"
          },
          {
            "name": "GLSA-202107-54",
            "refsource": "GENTOO",
            "url": "https://security.gentoo.org/glsa/202107-54"
          }
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      }
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        "nodes": [
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            "cpe_match": [
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                "cpe23Uri": "cpe:2.3:a:cesnet:libyang:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "1.0.225",
                "vulnerable": true
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            ],
            "operator": "OR"
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      "cve": {
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          "ID": "CVE-2021-28906"
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        "description": {
          "description_data": [
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              "value": "In function read_yin_leaf() in libyang \u003c= v1.0.225, it doesn\u0027t check whether the value of retval-\u003eext[r] is NULL. In some cases, it can be NULL, which leads to the operation of retval-\u003eext[r]-\u003eflags that results in a crash."
            }
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        },
        "problemtype": {
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                  "value": "CWE-252"
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        "references": {
          "reference_data": [
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              "name": "https://github.com/CESNET/libyang/issues/1455",
              "refsource": "CONFIRM",
              "tags": [
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                "Third Party Advisory"
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              "url": "https://github.com/CESNET/libyang/issues/1455"
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2022-04-06T17:35Z",
      "publishedDate": "2021-05-20T19:15Z"
    }
  }
}


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