{"schemaVersion":3,"id":"USN-3087-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"openssl vulnerabilities\n\nShi Lei discovered that OpenSSL incorrectly handled the OCSP Status Request\nextension. A remote attacker could possibly use this issue to cause memory\nconsumption, resulting in a denial of service. (CVE-2016-6304)\n\nGuido Vranken discovered that OpenSSL used undefined behaviour when\nperforming pointer arithmetic. A remote attacker could possibly use this\nissue to cause OpenSSL to crash, resulting in a denial of service. This\nissue has only been addressed in Ubuntu 16.04 LTS in this update.\n(CVE-2016-2177)\n\nCésar Pereida, Billy Brumley, and Yuval Yarom discovered that OpenSSL\ndid not properly use constant-time operations when performing DSA signing.\nA remote attacker could possibly use this issue to perform a cache-timing\nattack and recover private DSA keys. (CVE-2016-2178)\n\nQuan Luo discovered that OpenSSL did not properly restrict the lifetime\nof queue entries in the DTLS implementation. A remote attacker could\npossibly use this issue to consume memory, resulting in a denial of\nservice. (CVE-2016-2179)\n\nShi Lei discovered that OpenSSL incorrectly handled memory in the\nTS_OBJ_print_bio() function. A remote attacker could possibly use this\nissue to cause a denial of service. (CVE-2016-2180)\n\nIt was discovered that the OpenSSL incorrectly handled the DTLS anti-replay\nfeature. A remote attacker could possibly use this issue to cause a denial\nof service. (CVE-2016-2181)\n\nShi Lei discovered that OpenSSL incorrectly validated division results. A\nremote attacker could possibly use this issue to cause a denial of service.\n(CVE-2016-2182)\n\nKarthik Bhargavan and Gaetan Leurent discovered that the DES and Triple DES\nciphers were vulnerable to birthday attacks. A remote attacker could\npossibly use this flaw to obtain clear text data from long encrypted\nsessions. This update moves DES from the HIGH cipher list to MEDIUM.\n(CVE-2016-2183)\n\nShi Lei discovered that OpenSSL incorrectly handled certain ticket lengths.\nA remote attacker could use this issue to cause a denial of service.\n(CVE-2016-6302)\n\nShi Lei discovered that OpenSSL incorrectly handled memory in the\nMDC2_Update() function. A remote attacker could possibly use this issue to\ncause a denial of service. (CVE-2016-6303)\n\nShi Lei discovered that OpenSSL incorrectly performed certain message\nlength checks. A remote attacker could possibly use this issue to cause a\ndenial of service. (CVE-2016-6306)","dates":{"published":"2016-09-22T20:25:05.000Z","modified":"2026-06-01T07:15:22.952Z","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":"openssl","name":"openssl","label":"openssl","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/openssl","purlType":"deb","versions":[{"text":"< 1.0.1f-1ubuntu2.20","noFixRecorded":false,"fixedIn":null},{"text":"< 1.0.2g-1ubuntu4.4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.0.1f-1ubuntu2.20 | < 1.0.2g-1ubuntu4.4","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-3087-1","label":"ubuntu.com/security/notices/USN-3087-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2016-2177","label":"ubuntu.com/security/CVE-2016-2177","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2016-2178","label":"ubuntu.com/security/CVE-2016-2178","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2016-2179","label":"ubuntu.com/security/CVE-2016-2179","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2016-2180","label":"ubuntu.com/security/CVE-2016-2180","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2016-2181","label":"ubuntu.com/security/CVE-2016-2181","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2016-2182","label":"ubuntu.com/security/CVE-2016-2182","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2016-2183","label":"ubuntu.com/security/CVE-2016-2183","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2016-6302","label":"ubuntu.com/security/CVE-2016-6302","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2016-6303","label":"ubuntu.com/security/CVE-2016-6303","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2016-6304","label":"ubuntu.com/security/CVE-2016-6304","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2016-6306","label":"ubuntu.com/security/CVE-2016-6306","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2016-2177","CVE-2016-2178","CVE-2016-2179","CVE-2016-2180","CVE-2016-2181","CVE-2016-2182","CVE-2016-2183","CVE-2016-6302","CVE-2016-6303","CVE-2016-6304","CVE-2016-6306"],"downstream":[],"duplicates":[],"related":["CVE-2016-2177","CVE-2016-2178","CVE-2016-2179","CVE-2016-2180","CVE-2016-2181","CVE-2016-2182","CVE-2016-2183","CVE-2016-6302","CVE-2016-6303","CVE-2016-6304","CVE-2016-6306"]},"timeline":[{"kind":"published","date":"2016-09-22T20:25:05.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-01T07:15:22.952Z","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":"2026-10-21T01:12:09.210Z","stale":false,"partial":false}}