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{"affected_release": [{"advisory": "RHSA-2021:1783", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "tigervnc-0:1.11.0-6.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-05-18T00:00:00Z"}], "bugzilla": {"description": "tigervnc: certificate exceptions stored as authorities", "id": "1882841", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1882841"}, "csaw": false, "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."], "mitigation": {"lang": "en:us", "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."}, "name": "CVE-2020-26117", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "tigervnc", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "package_name": "tigervnc", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2020-09-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-26117\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-26117"], "threat_severity": "Moderate"}