{
  "threat_severity" : "Moderate",
  "public_date" : "2020-09-18T00:00:00Z",
  "bugzilla" : {
    "description" : "tigervnc: certificate exceptions stored as authorities",
    "id" : "1882841",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1882841"
  },
  "cvss3" : {
    "cvss3_base_score" : "8.1",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
    "status" : "verified"
  },
  "cwe" : "CWE-296",
  "details" : [ "In rfb/CSecurityTLS.cxx and rfb/CSecurityTLS.java in TigerVNC before 1.11.0, viewers mishandle TLS certificate exceptions. They store the certificates as authorities, meaning that the owner of a certificate could impersonate any server after a client had added an exception." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2021-05-18T00:00:00Z",
    "advisory" : "RHSA-2021:1783",
    "cpe" : "cpe:/a:redhat:enterprise_linux:8",
    "package" : "tigervnc-0:1.11.0-6.el8"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Out of support scope",
    "package_name" : "tigervnc",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Will not fix",
    "package_name" : "tigervnc",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2020-26117\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-26117" ],
  "name" : "CVE-2020-26117",
  "mitigation" : {
    "value" : "This flaw can be mitigated by not making certificate exceptions in the affected versions of tigervnc, and therefore they will not be stored as authorities.",
    "lang" : "en:us"
  },
  "csaw" : false
}