{"id":"USN-2959-1","summary":"openssl vulnerabilities","details":"Huzaifa Sidhpurwala, Hanno Böck, and David Benjamin discovered that OpenSSL\nincorrectly handled memory when decoding ASN.1 structures. A remote\nattacker could use this issue to cause OpenSSL to crash, resulting in a\ndenial of service, or possibly execute arbitrary code. (CVE-2016-2108)\n\nJuraj Somorovsky discovered that OpenSSL incorrectly performed padding when\nthe connection uses the AES CBC cipher and the server supports AES-NI. A\nremote attacker could possibly use this issue to perform a padding oracle\nattack and decrypt traffic. (CVE-2016-2107)\n\nGuido Vranken discovered that OpenSSL incorrectly handled large amounts of\ninput data to the EVP_EncodeUpdate() function. A remote attacker could use\nthis issue to cause OpenSSL to crash, resulting in a denial of service, or\npossibly execute arbitrary code. (CVE-2016-2105)\n\nGuido Vranken discovered that OpenSSL incorrectly handled large amounts of\ninput data to the EVP_EncryptUpdate() function. A remote attacker could use\nthis issue to cause OpenSSL to crash, resulting in a denial of service, or\npossibly execute arbitrary code. (CVE-2016-2106)\n\nBrian Carpenter discovered that OpenSSL incorrectly handled memory when\nASN.1 data is read from a BIO. A remote attacker could possibly use this\nissue to cause memory consumption, resulting in a denial of service.\n(CVE-2016-2109)\n\nAs a security improvement, this update also modifies OpenSSL behaviour to\nreject DH key sizes below 1024 bits, preventing a possible downgrade\nattack.\n","modified":"2026-04-22T09:24:12.113074Z","published":"2016-05-03T14:49:08Z","related":["UBUNTU-CVE-2016-2105","UBUNTU-CVE-2016-2106","UBUNTU-CVE-2016-2107","UBUNTU-CVE-2016-2108","UBUNTU-CVE-2016-2109"],"upstream":["CVE-2016-2105","CVE-2016-2106","CVE-2016-2107","CVE-2016-2108","CVE-2016-2109","UBUNTU-CVE-2016-2105","UBUNTU-CVE-2016-2106","UBUNTU-CVE-2016-2107","UBUNTU-CVE-2016-2108","UBUNTU-CVE-2016-2109"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-2959-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-2105"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-2106"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-2107"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-2108"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-2109"}],"affected":[{"package":{"name":"openssl","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/openssl@1.0.1f-1ubuntu2.19?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.1f-1ubuntu2.19"}]}],"versions":["1.0.1e-3ubuntu1","1.0.1e-4ubuntu1","1.0.1e-4ubuntu2","1.0.1e-4ubuntu3","1.0.1e-4ubuntu4","1.0.1f-1ubuntu1","1.0.1f-1ubuntu2","1.0.1f-1ubuntu2.1","1.0.1f-1ubuntu2.2","1.0.1f-1ubuntu2.3","1.0.1f-1ubuntu2.4","1.0.1f-1ubuntu2.5","1.0.1f-1ubuntu2.7","1.0.1f-1ubuntu2.8","1.0.1f-1ubuntu2.11","1.0.1f-1ubuntu2.12","1.0.1f-1ubuntu2.15","1.0.1f-1ubuntu2.16","1.0.1f-1ubuntu2.17","1.0.1f-1ubuntu2.18"],"ecosystem_specific":{"binaries":[{"binary_version":"1.0.1f-1ubuntu2.19","binary_name":"libssl1.0.0"},{"binary_version":"1.0.1f-1ubuntu2.19","binary_name":"openssl"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-2959-1.json","cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}],"id":"CVE-2016-2105"},{"severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}],"id":"CVE-2016-2106"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}],"id":"CVE-2016-2107"},{"severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}],"id":"CVE-2016-2108"},{"severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2016-2109"}],"ecosystem":"Ubuntu:14.04:LTS"}}},{"package":{"name":"openssl","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/openssl@1.0.2g-1ubuntu4.1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.2g-1ubuntu4.1"}]}],"versions":["1.0.2d-0ubuntu1","1.0.2d-0ubuntu2","1.0.2e-1ubuntu1","1.0.2f-2ubuntu1","1.0.2g-1ubuntu2","1.0.2g-1ubuntu3","1.0.2g-1ubuntu4"],"ecosystem_specific":{"binaries":[{"binary_version":"1.0.2g-1ubuntu4.1","binary_name":"libssl1.0.0"},{"binary_version":"1.0.2g-1ubuntu4.1","binary_name":"openssl"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-2959-1.json","cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}],"id":"CVE-2016-2105"},{"severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}],"id":"CVE-2016-2106"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}],"id":"CVE-2016-2107"},{"severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}],"id":"CVE-2016-2108"},{"severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2016-2109"}],"ecosystem":"Ubuntu:16.04:LTS"}}}],"schema_version":"1.7.5"}