{
  "threat_severity" : "Moderate",
  "public_date" : "2020-08-20T00:00:00Z",
  "bugzilla" : {
    "description" : "bind: truncated TSIG response can lead to an assertion failure",
    "id" : "1869473",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1869473"
  },
  "cvss3" : {
    "cvss3_base_score" : "6.5",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-400",
  "details" : [ "In BIND 9.0.0 -> 9.11.21, 9.12.0 -> 9.16.5, 9.17.0 -> 9.17.3, also affects 9.9.3-S1 -> 9.11.21-S1 of the BIND 9 Supported Preview Edition, An attacker on the network path for a TSIG-signed request, or operating the server receiving the TSIG-signed request, could send a truncated response to that request, triggering an assertion failure, causing the server to exit. Alternately, an off-path attacker would have to correctly guess when a TSIG-signed request was sent, along with other characteristics of the packet and message, and spoof a truncated response to trigger an assertion failure, causing the server to exit.", "A flaw was found in bind. An assertion failure can occur when trying to verify a truncated response to a TSIG-signed request. The highest threat from this vulnerability is to system availability." ],
  "acknowledgement" : "Red Hat would like to thank ISC for reporting this issue. Upstream acknowledges Dave Feldman (Oracle), Jeff Warren (Oracle), and Joel Cunningham (Oracle) as the original reporters.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "release_date" : "2020-10-07T00:00:00Z",
    "advisory" : "RHSA-2020:4183",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6",
    "package" : "bind-32:9.8.2-0.68.rc1.el6_10.8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2020-11-10T00:00:00Z",
    "advisory" : "RHSA-2020:5011",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "bind-32:9.11.4-26.P2.el7_9.2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.6 Extended Update Support",
    "release_date" : "2020-11-10T00:00:00Z",
    "advisory" : "RHSA-2020:4992",
    "cpe" : "cpe:/o:redhat:rhel_eus:7.6",
    "package" : "bind-32:9.9.4-74.el7_6.5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.7 Extended Update Support",
    "release_date" : "2020-11-24T00:00:00Z",
    "advisory" : "RHSA-2020:5203",
    "cpe" : "cpe:/o:redhat:rhel_eus:7.7",
    "package" : "bind-32:9.11.4-9.P2.el7_7.3"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2020-11-04T00:00:00Z",
    "advisory" : "RHSA-2020:4500",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8",
    "package" : "bind-32:9.11.20-5.el8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2020-11-04T00:00:00Z",
    "advisory" : "RHSA-2020:4500",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "bind-32:9.11.20-5.el8"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 5",
    "fix_state" : "Out of support scope",
    "package_name" : "bind",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 5",
    "fix_state" : "Out of support scope",
    "package_name" : "bind97",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2020-8622\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-8622\nhttps://kb.isc.org/docs/cve-2020-8622" ],
  "name" : "CVE-2020-8622",
  "csaw" : false
}