cve-2023-31147
Vulnerability from cvelistv5
Published
2023-05-25 21:55
Modified
2024-08-02 14:45
Summary
Insufficient randomness in generation of DNS query IDs in c-ares
Impacted products
Vendor Product Version
Show details on NVD website


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          "shortName": "CVE"
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            "url": "https://security.gentoo.org/glsa/202310-09"
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        "title": "CVE Program Container"
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    "cna": {
      "affected": [
        {
          "product": "c-ares",
          "vendor": "c-ares",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.19.1"
            }
          ]
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      ],
      "descriptions": [
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          "lang": "en",
          "value": "c-ares is an asynchronous resolver library. When /dev/urandom or RtlGenRandom() are unavailable, c-ares uses rand() to generate random numbers used for DNS query ids. This is not a CSPRNG, and it is also not seeded by srand() so will generate predictable output. Input from the random number generator is fed into a non-compilant RC4 implementation and may not be as strong as the original RC4 implementation. No attempt is made to look for modern OS-provided CSPRNGs like arc4random() that is widely available. This issue has been fixed in version 1.19.1."
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            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
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            "version": "3.1"
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        "dateUpdated": "2023-05-25T21:55:47.585Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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        {
          "url": "https://security.gentoo.org/glsa/202310-09"
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      ],
      "source": {
        "advisory": "GHSA-8r8p-23f3-64c2",
        "discovery": "UNKNOWN"
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      "title": "Insufficient randomness in generation of DNS query IDs in c-ares"
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    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2023-31147",
    "datePublished": "2023-05-25T21:55:47.585Z",
    "dateReserved": "2023-04-24T21:44:10.418Z",
    "dateUpdated": "2024-08-02T14:45:25.630Z",
    "state": "PUBLISHED"
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  }
}


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