gsd-2020-8620
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
In BIND 9.15.6 -> 9.16.5, 9.17.0 -> 9.17.3, An attacker who can establish a TCP connection with the server and send data on that connection can exploit this to trigger the assertion failure, causing the server to exit.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2020-8620",
"description": "In BIND 9.15.6 -\u003e 9.16.5, 9.17.0 -\u003e 9.17.3, An attacker who can establish a TCP connection with the server and send data on that connection can exploit this to trigger the assertion failure, causing the server to exit.",
"id": "GSD-2020-8620",
"references": [
"https://www.suse.com/security/cve/CVE-2020-8620.html",
"https://ubuntu.com/security/CVE-2020-8620"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
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],
"details": "In BIND 9.15.6 -\u003e 9.16.5, 9.17.0 -\u003e 9.17.3, An attacker who can establish a TCP connection with the server and send data on that connection can exploit this to trigger the assertion failure, causing the server to exit.",
"id": "GSD-2020-8620",
"modified": "2023-12-13T01:21:54.266721Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
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"DATE_PUBLIC": "2020-08-20T18:35:08.000Z",
"ID": "CVE-2020-8620",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
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{
"product": {
"product_data": [
{
"product_name": "BIND9",
"version": {
"version_data": [
{
"version_affected": "\u003e=",
"version_name": "",
"version_value": "9.15.6"
},
{
"version_affected": "\u003c",
"version_name": "",
"version_value": "9.16.6"
},
{
"version_affected": "\u003e=",
"version_name": "",
"version_value": "9.17.0"
},
{
"version_affected": "\u003c",
"version_name": "",
"version_value": "9.17.4"
}
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}
}
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},
"vendor_name": "ISC"
}
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}
},
"credit": [
{
"lang": "eng",
"value": "ISC would like to thank Emanuel Almeida of Cisco Systems, Inc. for bringing this vulnerability to our attention."
}
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"value": "In BIND 9.15.6 -\u003e 9.16.5, 9.17.0 -\u003e 9.17.3, An attacker who can establish a TCP connection with the server and send data on that connection can exploit this to trigger the assertion failure, causing the server to exit."
}
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"exploit": [
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"value": "We are not aware of any active exploits."
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"impact": {
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"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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"problemtype": {
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{
"description": [
{
"lang": "eng",
"value": " In versions of BIND that use the libuv network manager (9.16.x is the only stable branch affected) an incorrectly specified maximum buffer size allows a specially crafted large TCP payload to trigger an assertion failure when it is received. Affects BIND 9.15.6 -\u003e 9.16.5, 9.17.0 -\u003e 9.17.3"
}
]
}
]
},
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"name": "https://kb.isc.org/docs/cve-2020-8620",
"refsource": "CONFIRM",
"url": "https://kb.isc.org/docs/cve-2020-8620"
},
{
"name": "https://security.netapp.com/advisory/ntap-20200827-0003/",
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"url": "https://security.netapp.com/advisory/ntap-20200827-0003/"
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{
"name": "USN-4468-1",
"refsource": "UBUNTU",
"url": "https://usn.ubuntu.com/4468-1/"
},
{
"name": "GLSA-202008-19",
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},
{
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},
{
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"url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html"
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"solution": [
{
"lang": "eng",
"value": "Upgrade to the patched release most closely related to your current version of BIND:\n\n BIND 9.16.6\n BIND 9.17.4\n"
}
],
"source": {
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"TCP",
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"assertion",
"failure",
"in",
"tcpdns.c"
],
"discovery": "EXTERNAL"
},
"work_around": [
{
"lang": "eng",
"value": "No workarounds known."
}
]
},
"nvd.nist.gov": {
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"accessVector": "NETWORK",
"authentication": "NONE",
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"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
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},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
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"severity": "MEDIUM",
"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",
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"exploitabilityScore": 3.9,
"impactScore": 3.6
}
},
"lastModifiedDate": "2022-06-02T20:34Z",
"publishedDate": "2020-08-21T21:15Z"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- 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.