{
  "threat_severity" : "Important",
  "public_date" : "2022-03-03T00:00:00Z",
  "bugzilla" : {
    "description" : "python-twisted: SSH client and server denial of service during SSH handshake",
    "id" : "2060960",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2060960"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.5",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-770",
  "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.", "An uncontrolled resource consumption flaw was found in python-twisted in the dataReceived() function. This flaw allows an unauthenticated, remote attacker to send a simple command to use all available memory and crash the server." ],
  "affected_release" : [ {
    "product_name" : "Red Hat OpenStack Platform 16.1",
    "release_date" : "2022-03-24T00:00:00Z",
    "advisory" : "RHSA-2022:0982",
    "cpe" : "cpe:/a:redhat:openstack:16.1::el8",
    "package" : "python-twisted-0:16.4.1-19.el8ost"
  }, {
    "product_name" : "Red Hat OpenStack Platform 16.2",
    "release_date" : "2022-03-23T00:00:00Z",
    "advisory" : "RHSA-2022:0992",
    "cpe" : "cpe:/a:redhat:openstack:16.2::el8",
    "package" : "python-twisted-0:16.4.1-19.el8ost"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Ansible Automation Platform 2",
    "fix_state" : "Affected",
    "package_name" : "automation-controller",
    "cpe" : "cpe:/a:redhat:ansible_automation_platform:2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "python-twisted",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "python-twisted-conch",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat OpenStack Platform 13 (Queens)",
    "fix_state" : "Affected",
    "package_name" : "python-twisted",
    "cpe" : "cpe:/a:redhat:openstack:13"
  }, {
    "product_name" : "Red Hat Satellite 6",
    "fix_state" : "Affected",
    "package_name" : "python-twisted",
    "cpe" : "cpe:/a:redhat:satellite:6"
  }, {
    "product_name" : "Service Telemetry Framework 1.3 for RHEL 8",
    "fix_state" : "Affected",
    "package_name" : "python-twisted",
    "cpe" : "cpe:/a:redhat:stf:1.3::el8"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2022-21716\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-21716" ],
  "name" : "CVE-2022-21716",
  "csaw" : false
}