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 (v2.0.3)
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
References
Impacted products
Vendor Product Version
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
Create a notification for this product.
Date Public
2022-09-21 00:00
Show details on NVD website
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    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2025-11-21T11:36:28+00:00",
      "cve": "CVE-2022-38177",
      "id": "CVE-2022-38177",
      "initial_release_date": "2022-09-21T00:00:00+00:00",
      "product_status:fixed": "1741",
      "product_status:known_not_affected": "18",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "bind: memory leak in ECDSA DNSSEC verification code",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-38177.json",
      "version": "3"
    },
    "vulnrichment": {
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Note that this causes zones signed with these algorithms to be treated as insecure.\"}], \"descriptions\": [{\"lang\": \"en\", \"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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"text\", \"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.\"}]}], \"providerMetadata\": {\"orgId\": \"404fd4d2-a609-4245-b543-2c944a302a22\", \"shortName\": \"isc\", \"dateUpdated\": \"2022-12-28T00:00:00.000Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-38177\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-05-28T15:23:30.627Z\", \"dateReserved\": \"2022-08-12T00:00:00.000Z\", \"assignerOrgId\": \"404fd4d2-a609-4245-b543-2c944a302a22\", \"datePublished\": \"2022-09-21T10:15:28.292Z\", \"assignerShortName\": \"isc\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.


Detection rules are retrieved from Rulezet.