{"schemaVersion":3,"id":"USN-7239-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"libmicrodns vulnerabilities\n\nIt was discovered that libmicrodns could recursively follow the same\ncompression pointer, leading to an infinite loop. An attacker could\npossibly use this issue to cause a denial of service. (CVE-2020-6071)\n\nIt was discovered that libmicrodns did not check the return value of the\nrr_decode function, which could lead to a double free. An attacker could\npossibly use this issue to execute arbitrary code. (CVE-2020-6072)\n\nIt was discovered that libmicrodns incorrectly handled certain inputs,\nwhich could lead to an integer overflow. An attacker could possibly use\nthis issue to cause a denial of service. (CVE-2020-6073)\n\nIt was discovered that libmicrodns incorrectly handled certain inputs,\nwhich could lead to a out-of-bounds read. An attacker could possibly use\nthis issue to cause a denial of service. (CVE-2020-6077)\n\nIt was discovered that libmicrodns incorrectly handled memory when parsing\nmDNS messages in mdns_recv, which could lead to a NULL pointer dereference.\nAn attacker could possibly use this issue to cause a denial of service.\n(CVE-2020-6078)\n\nIt was discovered that libmicrodns incorrectly handled memory, which could\nlead to excessive memory consumption due to memory leaks. An attacker\ncould possibly use this issue to cause a denial of service.\n(CVE-2020-6079, CVE-2020-6080)","dates":{"published":"2025-01-28T23:36:20.000Z","modified":"2026-04-22T10:54:16.199Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"ubuntu","product":"libmicrodns","name":"libmicrodns","label":"libmicrodns","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/libmicrodns","purlType":"deb","versions":[{"text":"< 0.0.8-1ubuntu0.1~esm1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.0.8-1ubuntu0.1~esm1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-7239-1","label":"ubuntu.com/security/notices/USN-7239-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-6071","label":"ubuntu.com/security/CVE-2020-6071","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-6072","label":"ubuntu.com/security/CVE-2020-6072","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-6073","label":"ubuntu.com/security/CVE-2020-6073","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-6077","label":"ubuntu.com/security/CVE-2020-6077","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-6078","label":"ubuntu.com/security/CVE-2020-6078","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-6079","label":"ubuntu.com/security/CVE-2020-6079","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2020-6080","label":"ubuntu.com/security/CVE-2020-6080","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2020-6071","CVE-2020-6072","CVE-2020-6073","CVE-2020-6077","CVE-2020-6078","CVE-2020-6079","CVE-2020-6080"],"downstream":[],"duplicates":[],"related":["CVE-2020-6071","CVE-2020-6072","CVE-2020-6073","CVE-2020-6077","CVE-2020-6078","CVE-2020-6079","CVE-2020-6080"]},"timeline":[{"kind":"published","date":"2025-01-28T23:36:20.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-22T10:54:16.199Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T06:47:26.094Z","stale":false,"partial":false}}