CVE-2023-28320 (GCVE-0-2023-28320)

Vulnerability from cvelistv5 – Published: 2023-05-26 00:00 – Updated: 2025-01-15 15:59
VLAI
Summary
A denial of service vulnerability exists in curl <v8.1.0 in the way libcurl provides several different backends for resolving host names, selected at build time. If it is built to use the synchronous resolver, it allows name resolves to time-out slow operations using `alarm()` and `siglongjmp()`. When doing this, libcurl used a global buffer that was not mutex protected and a multi-threaded application might therefore crash or otherwise misbehave.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-15 15:57 UTC
CWE
  • CWE-400 - Denial of Service (CWE-400)
Assigner
hackerone CNA under the mitre root
CNA scorecard D 59/100 over 187 records in the last 180 days details
Impacted products
Vendor Product Version CPE status
n/a https://github.com/curl/curl Affected: Fixed in 8.1.0
Show details on NVD website

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                "url": "https://support.apple.com/kb/HT213845"
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                "url": "http://seclists.org/fulldisclosure/2023/Jul/52"
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                "name": "20230725 APPLE-SA-2023-07-24-5 macOS Monterey 12.6.8",
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                "name": "20230725 APPLE-SA-2023-07-24-4 macOS Ventura 13.5",
                "tags": [
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                "name": "GLSA-202310-12",
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                  "vendor-advisory",
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                ],
                "url": "https://security.gentoo.org/glsa/202310-12"
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            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "cvssV3_1": {
                  "attackComplexity": "HIGH",
                  "attackVector": "NETWORK",
                  "availabilityImpact": "HIGH",
                  "baseScore": 5.9,
                  "baseSeverity": "MEDIUM",
                  "confidentialityImpact": "NONE",
                  "integrityImpact": "NONE",
                  "privilegesRequired": "NONE",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
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                    "id": "CVE-2023-28320",
                    "options": [
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                        "Exploitation": "poc"
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                      {
                        "Automatable": "no"
                      },
                      {
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                    "role": "CISA Coordinator",
                    "timestamp": "2025-01-15T15:57:47.806370Z",
                    "version": "2.0.3"
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              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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              "product": "https://github.com/curl/curl",
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              "versions": [
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                  "version": "Fixed in 8.1.0"
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          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "A denial of service vulnerability exists in curl \u003cv8.1.0 in the way libcurl provides several different backends for resolving host names, selected at build time. If it is built to use the synchronous resolver, it allows name resolves to time-out slow operations using `alarm()` and `siglongjmp()`. When doing this, libcurl used a global buffer that was not mutex protected and a multi-threaded application might therefore crash or otherwise misbehave."
            }
          ],
          "problemTypes": [
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              "descriptions": [
                {
                  "cweId": "CWE-400",
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          },
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              "url": "https://hackerone.com/reports/1929597"
            },
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              "url": "https://security.netapp.com/advisory/ntap-20230609-0009/"
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            },
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            },
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            },
            {
              "name": "GLSA-202310-12",
              "tags": [
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              ],
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        "assignerShortName": "hackerone",
        "cveId": "CVE-2023-28320",
        "datePublished": "2023-05-26T00:00:00.000Z",
        "dateReserved": "2023-03-14T00:00:00.000Z",
        "dateUpdated": "2025-01-15T15:59:07.016Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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