gsd-2018-5743
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
By design, BIND is intended to limit the number of TCP clients that can be connected at any given time. The number of allowed connections is a tunable parameter which, if unset, defaults to a conservative value for most servers. Unfortunately, the code which was intended to limit the number of simultaneous connections contained an error which could be exploited to grow the number of simultaneous connections beyond this limit. Versions affected: BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.6, 9.12.0 -> 9.12.4, 9.14.0. BIND 9 Supported Preview Edition versions 9.9.3-S1 -> 9.11.5-S3, and 9.11.5-S5. Versions 9.13.0 -> 9.13.7 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5743.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2018-5743",
"description": "By design, BIND is intended to limit the number of TCP clients that can be connected at any given time. The number of allowed connections is a tunable parameter which, if unset, defaults to a conservative value for most servers. Unfortunately, the code which was intended to limit the number of simultaneous connections contained an error which could be exploited to grow the number of simultaneous connections beyond this limit. Versions affected: BIND 9.9.0 -\u003e 9.10.8-P1, 9.11.0 -\u003e 9.11.6, 9.12.0 -\u003e 9.12.4, 9.14.0. BIND 9 Supported Preview Edition versions 9.9.3-S1 -\u003e 9.11.5-S3, and 9.11.5-S5. Versions 9.13.0 -\u003e 9.13.7 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5743.",
"id": "GSD-2018-5743",
"references": [
"https://www.suse.com/security/cve/CVE-2018-5743.html",
"https://www.debian.org/security/2019/dsa-4440",
"https://access.redhat.com/errata/RHSA-2019:2977",
"https://access.redhat.com/errata/RHSA-2019:2698",
"https://access.redhat.com/errata/RHSA-2019:1492",
"https://access.redhat.com/errata/RHSA-2019:1294",
"https://access.redhat.com/errata/RHSA-2019:1145",
"https://ubuntu.com/security/CVE-2018-5743",
"https://advisories.mageia.org/CVE-2018-5743.html",
"https://alas.aws.amazon.com/cve/html/CVE-2018-5743.html",
"https://linux.oracle.com/cve/CVE-2018-5743.html"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2018-5743"
],
"details": "By design, BIND is intended to limit the number of TCP clients that can be connected at any given time. The number of allowed connections is a tunable parameter which, if unset, defaults to a conservative value for most servers. Unfortunately, the code which was intended to limit the number of simultaneous connections contained an error which could be exploited to grow the number of simultaneous connections beyond this limit. Versions affected: BIND 9.9.0 -\u003e 9.10.8-P1, 9.11.0 -\u003e 9.11.6, 9.12.0 -\u003e 9.12.4, 9.14.0. BIND 9 Supported Preview Edition versions 9.9.3-S1 -\u003e 9.11.5-S3, and 9.11.5-S5. Versions 9.13.0 -\u003e 9.13.7 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5743.",
"id": "GSD-2018-5743",
"modified": "2023-12-13T01:22:40.163787Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
"cve.org": {
"CVE_data_meta": {
"ASSIGNER": "security-officer@isc.org",
"DATE_PUBLIC": "2019-04-24T23:00:00.000Z",
"ID": "CVE-2018-5743",
"STATE": "PUBLIC",
"TITLE": "Limiting simultaneous TCP clients was ineffective"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "BIND 9",
"version": {
"version_data": [
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"version_name": "BIND 9",
"version_value": "BIND 9.9.0 -\u003e 9.10.8-P1, 9.11.0 -\u003e 9.11.6, 9.12.0 -\u003e 9.12.4, 9.14.0. BIND 9 Supported Preview Edition versions 9.9.3-S1 -\u003e 9.11.5-S3, and 9.11.5-S5. Versions 9.13.0 -\u003e 9.13.7 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5743."
}
]
}
}
]
},
"vendor_name": "ISC"
}
]
}
},
"credit": [
{
"lang": "eng",
"value": "ISC would like to thank AT\u0026T for helping us to discover this issue."
}
],
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "By design, BIND is intended to limit the number of TCP clients that can be connected at any given time. The number of allowed connections is a tunable parameter which, if unset, defaults to a conservative value for most servers. Unfortunately, the code which was intended to limit the number of simultaneous connections contained an error which could be exploited to grow the number of simultaneous connections beyond this limit. Versions affected: BIND 9.9.0 -\u003e 9.10.8-P1, 9.11.0 -\u003e 9.11.6, 9.12.0 -\u003e 9.12.4, 9.14.0. BIND 9 Supported Preview Edition versions 9.9.3-S1 -\u003e 9.11.5-S3, and 9.11.5-S5. Versions 9.13.0 -\u003e 9.13.7 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5743."
}
]
},
"generator": {
"engine": "Vulnogram 0.0.7"
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.0"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "By exploiting the failure to limit simultaneous TCP connections, an attacker can deliberately exhaust the pool of file descriptors available to named, potentially affecting network connections and the management of files such as log files or zone journal files. In cases where the named process is not limited by OS-enforced per-process limits, this could additionally potentially lead to exhaustion of all available free file descriptors on that system."
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://kb.isc.org/docs/cve-2018-5743",
"refsource": "CONFIRM",
"url": "https://kb.isc.org/docs/cve-2018-5743"
},
{
"name": "https://www.synology.com/security/advisory/Synology_SA_19_20",
"refsource": "CONFIRM",
"url": "https://www.synology.com/security/advisory/Synology_SA_19_20"
},
{
"name": "https://support.f5.com/csp/article/K74009656?utm_source=f5support\u0026amp;utm_medium=RSS",
"refsource": "CONFIRM",
"url": "https://support.f5.com/csp/article/K74009656?utm_source=f5support\u0026amp;utm_medium=RSS"
}
]
},
"solution": [
{
"lang": "eng",
"value": "Upgrade to a version of BIND containing a fix for the ineffective limits.\n\n+ BIND 9.11.6-P1\n+ BIND 9.12.4-P1\n+ BIND 9.14.1\n\nBIND Supported Preview Edition is a special feature preview branch of BIND provided to eligible ISC support customers.\n\n + BIND 9.11.5-S6\n + BIND 9.11.6-S1"
}
],
"source": {
"discovery": "USER"
}
},
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"value": "By design, BIND is intended to limit the number of TCP clients that can be connected at any given time. The number of allowed connections is a tunable parameter which, if unset, defaults to a conservative value for most servers. Unfortunately, the code which was intended to limit the number of simultaneous connections contained an error which could be exploited to grow the number of simultaneous connections beyond this limit. Versions affected: BIND 9.9.0 -\u003e 9.10.8-P1, 9.11.0 -\u003e 9.11.6, 9.12.0 -\u003e 9.12.4, 9.14.0. BIND 9 Supported Preview Edition versions 9.9.3-S1 -\u003e 9.11.5-S3, and 9.11.5-S5. Versions 9.13.0 -\u003e 9.13.7 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5743."
}
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"lang": "en",
"value": "CWE-770"
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"name": "https://kb.isc.org/docs/cve-2018-5743",
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"url": "https://www.synology.com/security/advisory/Synology_SA_19_20"
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"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 4.3,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
"version": "2.0"
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"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
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"userInteractionRequired": false
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"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",
"version": "3.1"
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}
},
"lastModifiedDate": "2019-12-18T18:15Z",
"publishedDate": "2019-10-09T16:15Z"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.