GHSA-C8WJ-435X-F2CC

Vulnerability from github – Published: 2023-05-26 21:30 – Updated: 2024-04-04 04:21
VLAI?
Details

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.

Severity ?
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2023-28320"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-362",
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-05-26T21:15:15Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-c8wj-435x-f2cc",
  "modified": "2024-04-04T04:21:32Z",
  "published": "2023-05-26T21:30:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-28320"
    },
    {
      "type": "WEB",
      "url": "https://hackerone.com/reports/1929597"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202310-12"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20230609-0009"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT213843"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT213844"
    },
    {
      "type": "WEB",
      "url": "https://support.apple.com/kb/HT213845"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/fulldisclosure/2023/Jul/47"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/fulldisclosure/2023/Jul/48"
    },
    {
      "type": "WEB",
      "url": "http://seclists.org/fulldisclosure/2023/Jul/52"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}


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  • 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.
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  • 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.



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