cve-2022-38177
Vulnerability from cvelistv5
Published
2022-09-21 10:15
Modified
2024-09-17 00:06
Summary
Memory leak in ECDSA DNSSEC verification code
Impacted products
ISCBIND9
Show details on NVD website


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            "name": "[oss-security] 20220921 ISC has disclosed six vulnerabilities in BIND (CVE-2022-2795, CVE-2022-2881, CVE-2022-2906, CVE-2022-3080, CVE-2022-38177, CVE-2022-38178)",
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    "cna": {
      "affected": [
        {
          "product": "BIND9",
          "vendor": "ISC",
          "versions": [
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              "version": "Open Source Branches 9.8 through 9.16 9.8.4 through versions before 9.16.33"
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              "version": "Supported Preview Branches 9.9-S through 9.11-S 9.9.4-S1 through versions up to and including 9.11.37-S1"
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      "datePublic": "2022-09-21T00:00:00",
      "descriptions": [
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          "value": "By spoofing the target resolver with responses that have a malformed ECDSA signature, an attacker can trigger a small memory leak. It is possible to gradually erode available memory to the point where named crashes for lack of resources."
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      "exploits": [
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          "value": "This flaw was discovered in internal testing. We are not aware of any active exploits."
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            "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",
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              "description": "In BIND 9.8.4 -\u003e 9.16.32 and versions 9.9.4-S1 -\u003e 9.11.37-S1, 9.16.8-S1 -\u003e 9.16.32-S1 of the BIND Supported Preview Edition, the DNSSEC verification code for the ECDSA algorithm leaks memory when there is a signature length mismatch.",
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      "solutions": [
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          "lang": "en",
          "value": "Upgrade to the patched release most closely related to your current version of BIND: BIND 9.16.33, or for BIND Supported Preview Edition (a special feature preview branch of BIND provided to eligible ISC support customers): BIND 9.16.33-S1."
        }
      ],
      "source": {
        "discovery": "INTERNAL"
      },
      "title": "Memory leak in ECDSA DNSSEC verification code",
      "workarounds": [
        {
          "lang": "en",
          "value": "Disable the following algorithms in your configuration using the disable-algorithms option: ECDSAP256SHA256, ECDSAP384SHA384. Note that this causes zones signed with these algorithms to be treated as insecure."
        }
      ]
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  },
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    "assignerShortName": "isc",
    "cveId": "CVE-2022-38177",
    "datePublished": "2022-09-21T10:15:28.292139Z",
    "dateReserved": "2022-08-12T00:00:00",
    "dateUpdated": "2024-09-17T00:06:02.235Z",
    "state": "PUBLISHED"
  },
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  }
}


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