CVE-2023-3341 (GCVE-0-2023-3341)

Vulnerability from cvelistv5 – Published: 2023-09-20 12:32 – Updated: 2025-12-02 20:15
VLAI
Title
A stack exhaustion flaw in control channel code may cause named to terminate unexpectedly
Summary
The code that processes control channel messages sent to `named` calls certain functions recursively during packet parsing. Recursion depth is only limited by the maximum accepted packet size; depending on the environment, this may cause the packet-parsing code to run out of available stack memory, causing `named` to terminate unexpectedly. Since each incoming control channel message is fully parsed before its contents are authenticated, exploiting this flaw does not require the attacker to hold a valid RNDC key; only network access to the control channel's configured TCP port is necessary. This issue affects BIND 9 versions 9.2.0 through 9.16.43, 9.18.0 through 9.18.18, 9.19.0 through 9.19.16, 9.9.3-S1 through 9.16.43-S1, and 9.18.0-S1 through 9.18.18-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 (v2.0.3)
CWE
  • CWE-1325 - Improperly Controlled Sequential Memory Allocation
Assigner
isc
References
Impacted products
Vendor Product Version
ISC BIND 9 Affected: 9.2.0 , ≤ 9.16.43 (custom)
Affected: 9.18.0 , ≤ 9.18.18 (custom)
Affected: 9.19.0 , ≤ 9.19.16 (custom)
Affected: 9.9.3-S1 , ≤ 9.16.43-S1 (custom)
Affected: 9.18.0-S1 , ≤ 9.18.18-S1 (custom)
Create a notification for this product.
Date Public
2023-09-20 00:00
Credits
ISC would like to thank Eric Sesterhenn from X41 D-Sec GmbH for bringing this vulnerability to our attention.
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Since each incoming control channel message is fully parsed before its contents are authenticated, exploiting this flaw does not require the attacker to hold a valid RNDC key; only network access to the control channel\u0027s configured TCP port is necessary.\\nThis issue affects BIND 9 versions 9.2.0 through 9.16.43, 9.18.0 through 9.18.18, 9.19.0 through 9.19.16, 9.9.3-S1 through 9.16.43-S1, and 9.18.0-S1 through 9.18.18-S1.\"},{\"lang\":\"es\",\"value\":\"El c\u00f3digo que procesa los mensajes del canal de control enviados a \\\"named\\\" llama a ciertas funciones de forma recursiva durante el an\u00e1lisis de paquetes. La profundidad de la recursividad s\u00f3lo est\u00e1 limitada por el tama\u00f1o m\u00e1ximo de paquete aceptado; Dependiendo del entorno, esto puede provocar que el c\u00f3digo de an\u00e1lisis de paquetes se quede sin memoria disponible, lo que provocar\u00e1 que \\\"named\\\" finalice inesperadamente. 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    "vulnrichment": {
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However, the attack only works in environments where the stack size available to each process/thread is small enough; the exact threshold depends on multiple factors and is therefore impossible to specify universally.\"}]}], \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}], \"affected\": [{\"vendor\": \"ISC\", \"product\": \"BIND 9\", \"versions\": [{\"status\": \"affected\", \"version\": \"9.2.0\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"9.16.43\"}, {\"status\": \"affected\", \"version\": \"9.18.0\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"9.18.18\"}, {\"status\": \"affected\", \"version\": \"9.19.0\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"9.19.16\"}, {\"status\": \"affected\", \"version\": \"9.9.3-S1\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"9.16.43-S1\"}, {\"status\": \"affected\", \"version\": \"9.18.0-S1\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"9.18.18-S1\"}], \"defaultStatus\": \"unaffected\"}], \"exploits\": [{\"lang\": \"en\", \"value\": \"We are not aware of any active exploits.\"}], \"solutions\": [{\"lang\": \"en\", \"value\": \"Upgrade to the patched release most closely related to your current version of BIND 9: 9.16.44, 9.18.19, 9.19.17, 9.16.44-S1, or 9.18.19-S1.\"}], \"datePublic\": \"2023-09-20T00:00:00.000Z\", \"references\": [{\"url\": \"https://kb.isc.org/docs/cve-2023-3341\", \"name\": \"CVE-2023-3341\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"http://www.openwall.com/lists/oss-security/2023/09/20/2\"}, {\"url\": \"https://www.debian.org/security/2023/dsa-5504\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IPJLLTJCSDJJII7IIZPLTBQNWP7MZH7F/\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U35OARLQCPMVCBBPHWBXY5M6XJLD2TZ5/\"}, {\"url\": \"https://security.netapp.com/advisory/ntap-20231013-0003/\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VSK5V4W4OHPM3JTJGWAQD6CZW7SFD75B/\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2024/01/msg00021.html\"}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"By default, `named` only allows control-channel connections over the loopback interface, making this attack impossible to carry out over the network. When enabling remote access to the control channel\u0027s configured TCP port, care should be taken to limit such access to trusted IP ranges on the network level, effectively preventing unauthorized parties from carrying out the attack described in this advisory.\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"The code that processes control channel messages sent to `named` calls certain functions recursively during packet parsing. Recursion depth is only limited by the maximum accepted packet size; depending on the environment, this may cause the packet-parsing code to run out of available stack memory, causing `named` to terminate unexpectedly. Since each incoming control channel message is fully parsed before its contents are authenticated, exploiting this flaw does not require the attacker to hold a valid RNDC key; only network access to the control channel\u0027s configured TCP port is necessary.\\nThis issue affects BIND 9 versions 9.2.0 through 9.16.43, 9.18.0 through 9.18.18, 9.19.0 through 9.19.16, 9.9.3-S1 through 9.16.43-S1, and 9.18.0-S1 through 9.18.18-S1.\"}], \"providerMetadata\": {\"orgId\": \"404fd4d2-a609-4245-b543-2c944a302a22\", \"shortName\": \"isc\", \"dateUpdated\": \"2024-01-31T00:06:17.912Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-3341\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-12-02T20:15:58.967Z\", \"dateReserved\": \"2023-06-20T16:19:13.104Z\", \"assignerOrgId\": \"404fd4d2-a609-4245-b543-2c944a302a22\", \"datePublished\": \"2023-09-20T12:32:03.073Z\", \"assignerShortName\": \"isc\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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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.