CVE-2022-21716
Vulnerability from cvelistv5
Published
2022-03-03 00:00
Modified
2025-04-22 18:21
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS score ?
0.78% (0.72489)
Summary
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.
References
security-advisories@github.comhttps://github.com/twisted/twisted/commit/89c395ee794e85a9657b112c4351417850330ef9Patch, Third Party Advisory
security-advisories@github.comhttps://github.com/twisted/twisted/releases/tag/twisted-22.2.0Release Notes, Third Party Advisory
security-advisories@github.comhttps://github.com/twisted/twisted/security/advisories/GHSA-rv6r-3f5q-9rgxExploit, Patch, Third Party Advisory
security-advisories@github.comhttps://lists.debian.org/debian-lts-announce/2022/03/msg00009.htmlMailing List, Third Party Advisory
security-advisories@github.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7U6KYDTOLPICAVSR34G2WRYLFBD2YW5K/
security-advisories@github.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLKHA6WREIVAMBQD7KKWYHPHGGNKMAG6/
security-advisories@github.comhttps://security.gentoo.org/glsa/202301-02Third Party Advisory
security-advisories@github.comhttps://twistedmatrix.com/trac/ticket/10284Issue Tracking, Vendor Advisory
security-advisories@github.comhttps://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/twisted/twisted/commit/89c395ee794e85a9657b112c4351417850330ef9Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/twisted/twisted/releases/tag/twisted-22.2.0Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/twisted/twisted/security/advisories/GHSA-rv6r-3f5q-9rgxExploit, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/03/msg00009.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7U6KYDTOLPICAVSR34G2WRYLFBD2YW5K/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLKHA6WREIVAMBQD7KKWYHPHGGNKMAG6/
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202301-02Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://twistedmatrix.com/trac/ticket/10284Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
Impacted products
Vendor Product Version
twisted twisted Version: < 22.2.0
 Create a notification for this product.
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         containers: "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://github.com/twisted/twisted/security/advisories/GHSA-rv6r-3f5q-9rgx\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://github.com/twisted/twisted/commit/89c395ee794e85a9657b112c4351417850330ef9\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://github.com/twisted/twisted/releases/tag/twisted-22.2.0\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://twistedmatrix.com/trac/ticket/10284\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2022/03/msg00009.html\", \"name\": \"[debian-lts-announce] 20220308 [SECURITY] [DLA 2938-1] twisted security update\", \"tags\": [\"mailing-list\", \"x_transferred\"]}, {\"url\": \"https://www.oracle.com/security-alerts/cpuapr2022.html\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLKHA6WREIVAMBQD7KKWYHPHGGNKMAG6/\", \"name\": \"FEDORA-2022-71b66d4747\", \"tags\": [\"vendor-advisory\", \"x_transferred\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7U6KYDTOLPICAVSR34G2WRYLFBD2YW5K/\", \"name\": \"FEDORA-2022-9a489fa494\", \"tags\": [\"vendor-advisory\", \"x_transferred\"]}, {\"url\": \"https://security.gentoo.org/glsa/202301-02\", \"name\": \"GLSA-202301-02\", \"tags\": [\"vendor-advisory\", \"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-03T02:53:34.846Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-21716\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"poc\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-04-22T15:42:00.960323Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-04-22T15:42:08.704Z\"}}], \"cna\": {\"title\": \"Buffer Overflow in Twisted\", \"source\": {\"advisory\": \"GHSA-rv6r-3f5q-9rgx\", \"discovery\": \"UNKNOWN\"}, \"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\": \"twisted\", \"product\": \"twisted\", \"versions\": [{\"status\": \"affected\", \"version\": \"< 22.2.0\"}]}], \"references\": [{\"url\": \"https://github.com/twisted/twisted/security/advisories/GHSA-rv6r-3f5q-9rgx\"}, {\"url\": \"https://github.com/twisted/twisted/commit/89c395ee794e85a9657b112c4351417850330ef9\"}, {\"url\": \"https://github.com/twisted/twisted/releases/tag/twisted-22.2.0\"}, {\"url\": \"https://twistedmatrix.com/trac/ticket/10284\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2022/03/msg00009.html\", \"name\": \"[debian-lts-announce] 20220308 [SECURITY] [DLA 2938-1] twisted security update\", \"tags\": [\"mailing-list\"]}, {\"url\": \"https://www.oracle.com/security-alerts/cpuapr2022.html\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLKHA6WREIVAMBQD7KKWYHPHGGNKMAG6/\", \"name\": \"FEDORA-2022-71b66d4747\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7U6KYDTOLPICAVSR34G2WRYLFBD2YW5K/\", \"name\": \"FEDORA-2022-9a489fa494\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://security.gentoo.org/glsa/202301-02\", \"name\": \"GLSA-202301-02\", \"tags\": [\"vendor-advisory\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-120\", \"description\": \"CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')\"}]}], \"providerMetadata\": {\"orgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"shortName\": \"GitHub_M\", \"dateUpdated\": \"2023-01-11T00:00:00.000Z\"}}}",
         cveMetadata: "{\"cveId\": \"CVE-2022-21716\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-04-22T18:21:08.759Z\", \"dateReserved\": \"2021-11-16T00:00:00.000Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2022-03-03T00:00:00.000Z\", \"assignerShortName\": \"GitHub_M\"}",
         dataType: "CVE_RECORD",
         dataVersion: "5.1",
      },
   },
}


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Security Advisory comment format.

This schema specifies the format of a comment related to a security advisory.

UUIDv4 of the comment
UUIDv4 of the Vulnerability-Lookup instance
When the comment was created originally
When the comment was last updated
Title of the comment
Description of the comment
The identifier of the vulnerability (CVE ID, GHSA-ID, PYSEC ID, etc.).



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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.