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CVE-2023-2828 (GCVE-0-2023-2828)

Vulnerability from cvelistv5 – Published: 2023-06-21 16:26 – Updated: 2025-02-13 16:48
VLAI
Title
named's configured cache size limit can be significantly exceeded
Summary
Every `named` instance configured to run as a recursive resolver maintains a cache database holding the responses to the queries it has recently sent to authoritative servers. The size limit for that cache database can be configured using the `max-cache-size` statement in the configuration file; it defaults to 90% of the total amount of memory available on the host. When the size of the cache reaches 7/8 of the configured limit, a cache-cleaning algorithm starts to remove expired and/or least-recently used RRsets from the cache, to keep memory use below the configured limit. It has been discovered that the effectiveness of the cache-cleaning algorithm used in `named` can be severely diminished by querying the resolver for specific RRsets in a certain order, effectively allowing the configured `max-cache-size` limit to be significantly exceeded. This issue affects BIND 9 versions 9.11.0 through 9.16.41, 9.18.0 through 9.18.15, 9.19.0 through 9.19.13, 9.11.3-S1 through 9.16.41-S1, and 9.18.11-S1 through 9.18.15-S1.
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 2024-12-06 18:36 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
ISC BIND 9 Affected: 9.11.0 , ≤ 9.16.41 (custom)
Affected: 9.18.0 , ≤ 9.18.15 (custom)
Affected: 9.19.0 , ≤ 9.19.13 (custom)
Affected: 9.11.3-S1 , ≤ 9.16.41-S1 (custom)
Affected: 9.18.11-S1 , ≤ 9.18.15-S1 (custom)
guessed Create a notification for this product.
Date Public
2023-06-21 00:00
Credits
ISC would like to thank Shoham Danino from Reichman University, Anat Bremler-Barr from Tel-Aviv University, Yehuda Afek from Tel-Aviv University, and Yuval Shavitt from Tel-Aviv University for bringing this vulnerability to our attention.
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    "redhat_vex": {
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      "current_release_date": "2026-08-06T19:54:26+00:00",
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      "initial_release_date": "2023-06-21T00:00:00+00:00",
      "product_status:fixed": "1456",
      "product_status:known_not_affected": "12",
      "source": "Red Hat CSAF VEX",
      "status": "final",
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      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-2828.json",
      "version": "3"
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    "suse_vex": {
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      "current_release_date": "2026-09-13T23:49:30Z",
      "cve": "CVE-2023-2828",
      "id": "CVE-2023-2828",
      "initial_release_date": "2023-06-24T01:47:55Z",
      "product_status:known_affected": "221",
      "product_status:known_not_affected": "24",
      "product_status:recommended": "990",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2023-2828",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-2828.json",
      "version": "56"
    },
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      "cveMetadata": "{\"cveId\": \"CVE-2023-2828\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-06T18:36:35.647Z\", \"dateReserved\": \"2023-05-22T07:57:41.362Z\", \"assignerOrgId\": \"404fd4d2-a609-4245-b543-2c944a302a22\", \"datePublished\": \"2023-06-21T16:26:07.096Z\", \"assignerShortName\": \"isc\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.