gsd-2022-21716
Vulnerability from gsd
Modified
2023-12-13 01:19
Details
Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0, Twisted SSH client and server implement is able to accept an infinite amount of data for the peer's SSH version identifier. This ends up with a buffer using all the available memory. The attach is a simple as `nc -rv localhost 22 < /dev/zero`. A patch is available in version 22.2.0. There are currently no known workarounds.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2022-21716",
"description": "Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0, Twisted SSH client and server implement is able to accept an infinite amount of data for the peer\u0027s SSH version identifier. This ends up with a buffer using all the available memory. The attach is a simple as `nc -rv localhost 22 \u003c /dev/zero`. A patch is available in version 22.2.0. There are currently no known workarounds.",
"id": "GSD-2022-21716",
"references": [
"https://www.suse.com/security/cve/CVE-2022-21716.html",
"https://security.archlinux.org/CVE-2022-21716",
"https://access.redhat.com/errata/RHSA-2022:0982",
"https://access.redhat.com/errata/RHSA-2022:0992",
"https://ubuntu.com/security/CVE-2022-21716",
"https://alas.aws.amazon.com/cve/html/CVE-2022-21716.html",
"https://advisories.mageia.org/CVE-2022-21716.html"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
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],
"details": "Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0, Twisted SSH client and server implement is able to accept an infinite amount of data for the peer\u0027s SSH version identifier. This ends up with a buffer using all the available memory. The attach is a simple as `nc -rv localhost 22 \u003c /dev/zero`. A patch is available in version 22.2.0. There are currently no known workarounds.",
"id": "GSD-2022-21716",
"modified": "2023-12-13T01:19:14.512166Z",
"schema_version": "1.4.0"
}
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}
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
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"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
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{
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"discovery": "UNKNOWN"
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"cwe_ids": [
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"CWE-937"
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"date": "2023-07-24",
"description": "Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0, Twisted SSH client and server implement is able to accept an infinite amount of data for the peer\u0027s SSH version identifier. This ends up with a buffer using all the available memory. The attach is a simple as `nc -rv localhost 22 \u003c /dev/zero`. A patch is available in version 22.2.0. There are currently no known workarounds.",
"fixed_versions": [
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"identifier": "CVE-2022-21716",
"identifiers": [
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],
"not_impacted": "All versions before 21.7.0, all versions starting from 22.2.0",
"package_slug": "pypi/Twisted",
"pubdate": "2022-03-03",
"solution": "Upgrade to version 22.2.0 or above.",
"title": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
"urls": [
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"https://twistedmatrix.com/trac/ticket/10284",
"https://github.com/advisories/GHSA-rv6r-3f5q-9rgx"
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"uuid": "302607d5-3625-4694-9ed2-92e1cb305f7f"
}
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"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
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"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.0,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
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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"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6
}
},
"lastModifiedDate": "2023-07-24T13:47Z",
"publishedDate": "2022-03-03T21:15Z"
}
}
}
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