Vulnerability-Lookup

GHSA-4GRV-WGVH-8X82

Vulnerability from github – Published: 2023-08-16 15:30 – Updated: 2026-02-25 18:31

Details

kdc/do_tgs_req.c in MIT Kerberos 5 (aka krb5) 1.21 before 1.21.2 has a double free that is reachable if an authenticated user can trigger an authorization-data handling failure. Incorrect data is copied from one ticket to another.

Severity

8.8 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2023-39975"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-415"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-08-16T15:15:11Z",
    "severity": "HIGH"
  },
  "details": "kdc/do_tgs_req.c in MIT Kerberos 5 (aka krb5) 1.21 before 1.21.2 has a double free that is reachable if an authenticated user can trigger an authorization-data handling failure. Incorrect data is copied from one ticket to another.",
  "id": "GHSA-4grv-wgvh-8x82",
  "modified": "2026-02-25T18:31:23Z",
  "published": "2023-08-16T15:30:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-39975"
    },
    {
      "type": "WEB",
      "url": "https://github.com/krb5/krb5/commit/88a1701b423c13991a8064feeb26952d3641d840"
    },
    {
      "type": "WEB",
      "url": "https://github.com/krb5/krb5/compare/krb5-1.21.1-final...krb5-1.21.2-final"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20230915-0014"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20240201-0005"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20240201-0008"
    },
    {
      "type": "WEB",
      "url": "https://web.mit.edu/kerberos/www/advisories"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2023-39975 (GCVE-0-2023-39975)

Vulnerability from cvelistv5 – Published: 2023-08-16 00:00 – Updated: 2026-02-25 17:20

Summary

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-02-15 05:16 UTC

CWE

n/a
CWE-415 - Double Free

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2349 records in the last 180 days details

References

6 references

URL	Tags
https://web.mit.edu/kerberos/www/advisories/
https://github.com/krb5/krb5/compare/krb5-1.21.1-…
https://github.com/krb5/krb5/commit/88a1701b423c1…
https://security.netapp.com/advisory/ntap-2023091…
https://security.netapp.com/advisory/ntap-2024020…
https://security.netapp.com/advisory/ntap-2024020…

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JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T18:18:10.190Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
          {
            "tags": [
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            ],
            "url": "https://web.mit.edu/kerberos/www/advisories/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://github.com/krb5/krb5/compare/krb5-1.21.1-final...krb5-1.21.2-final"
          },
          {
            "tags": [
              "x_transferred"
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            "url": "https://github.com/krb5/krb5/commit/88a1701b423c13991a8064feeb26952d3641d840"
          },
          {
            "tags": [
              "x_transferred"
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            "url": "https://security.netapp.com/advisory/ntap-20230915-0014/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20240201-0008/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20240201-0005/"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 8.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
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            "other": {
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                "id": "CVE-2023-39975",
                "options": [
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                  },
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                "timestamp": "2024-02-15T05:16:00.473844Z",
                "version": "2.0.3"
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                "description": "CWE-415 Double Free",
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          "dateUpdated": "2026-02-25T17:20:11.934Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
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        }
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      "problemTypes": [
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      "providerMetadata": {
        "dateUpdated": "2024-02-01T17:06:58.025Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
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      "references": [
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        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20230915-0014/"
        },
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        },
        {
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    "dateReserved": "2023-08-07T00:00:00.000Z",
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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.

Vulnerability timeline

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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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