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{"bugzilla": {"description": "bind: Interaction between NSEC aggresive negative caching and the serve-stale feature can cause a denial of service", "id": "1578593", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1578593"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-400", "details": ["A problem with the implementation of the new serve-stale feature in BIND 9.12 can lead to an assertion failure in rbtdb.c, even when stale-answer-enable is off. Additionally, problematic interaction between the serve-stale feature and NSEC aggressive negative caching can in some cases cause undesirable behavior from named, such as a recursion loop or excessive logging. Deliberate exploitation of this condition could cause operational problems depending on the particular manifestation -- either degradation or denial of service. Affects BIND 9.12.0 and 9.12.1.", "A flaw was found in the \"serve-stale\" feature as implemented in bind. Problematic interaction between serve-stale feature and NSEC aggressive negative caching could cause denial of service."], "name": "CVE-2018-5737", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "bind", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "bind97", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "bind", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "bind", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "bind", "product_name": "Red Hat Enterprise Linux 8"}], "public_date": "2018-05-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2018-5737\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-5737\nhttps://kb.isc.org/article/AA-01606/74/CVE-2018-5737"], "statement": "This security flaw only affects bind versions 9.12.0 and 9.12.1. Since Red Hat Enterprise Linux does not ship any of these bind versions, it is not affected.", "threat_severity": "Moderate", "upstream_fix": "bind 9.12.1-P2"}