CVE-2022-38177 (GCVE-0-2022-38177)

Vulnerability from cvelistv5 – Published: 2022-09-21 10:15 – Updated: 2025-05-28 15:23
VLAI
Title
Memory leak in ECDSA DNSSEC verification code
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-28 15:23 UTC
CWE
  • In BIND 9.8.4 -> 9.16.32 and versions 9.9.4-S1 -> 9.11.37-S1, 9.16.8-S1 -> 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.
  • CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
isc CNA under the mitre root
CNA scorecard A 95/100 over 33 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
ISC BIND9 Affected: Open Source Branches 9.8 through 9.16 9.8.4 through versions before 9.16.33
Affected: Supported Preview Branches 9.9-S through 9.11-S 9.9.4-S1 through versions up to and including 9.11.37-S1
Affected: Supported Preview Branch 9.16-S 9.16.8-S1 through versions before 9.16.33-S1
guessed Create a notification for this product.
Date Public
2022-09-21 00:00
Show details on NVD website
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      "product_status:fixed": "942",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
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                "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MRHB6J4Z7BKH4HPEKG5D35QGRD6ANNMT/"
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            "metrics": [
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                    "id": "CVE-2022-38177",
                    "options": [
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            },
            {
              "name": "[debian-lts-announce] 20221005 [SECURITY] [DLA 3138-1] bind9 security update",
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              "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."
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          "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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        "assignerShortName": "isc",
        "cveId": "CVE-2022-38177",
        "datePublished": "2022-09-21T10:15:28.292Z",
        "dateReserved": "2022-08-12T00:00:00.000Z",
        "dateUpdated": "2025-05-28T15:23:30.627Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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