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{"affected_release": [{"advisory": "RHSA-2020:1998", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "gnutls-0:3.6.8-10.el8_2", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-04-30T00:00:00Z"}, {"advisory": "RHSA-2020:1998", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "gnutls-0:3.6.8-10.el8_2", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2020-04-30T00:00:00Z"}], "bugzilla": {"description": "gnutls: DTLS client hello contains a random value of all zeroes", "id": "1821896", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1821896"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "status": "verified"}, "cwe": "CWE-327", "details": ["GnuTLS 3.6.x before 3.6.13 uses incorrect cryptography for DTLS. The earliest affected version is 3.6.3 (2018-07-16) because of an error in a 2017-10-06 commit. The DTLS client always uses 32 '\\0' bytes instead of a random value, and thus contributes no randomness to a DTLS negotiation. This breaks the security guarantees of the DTLS protocol.", "A cryptographic weakness was found in the way DLTS implementation of GnuTLS, used zeros in place of random numbers. This flaw can break the security guarantee of the DTLS protocol."], "name": "CVE-2020-11501", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "gnutls", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "gnutls", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "gnutls", "product_name": "Red Hat Enterprise Linux 7"}], "public_date": "2020-03-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-11501\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-11501\nhttps://www.redhat.com/en/blog/understanding-dtls-all-zero-clienthellorandom-vulnerability"], "statement": "The earliest affected version is gnuTLS-3.6.3. Therefore versions of gnuTLS shipped with Red Hat Enterprise Linux 5, 6 and 7 are not affected by this flaw.", "threat_severity": "Moderate", "upstream_fix": "gnutls 3.6.13"}