{"id":"USN-4842-1","summary":"ntopng vulnerability","details":"It was discovered that ntopng did not properly seed its random number\ngenerator, leading to predictable session tokens. An attacker could use\nthis vulnerability to hijack a user's session.\n","modified":"2026-06-25T13:30:30.818739709Z","published":"2021-03-15T22:25:46Z","related":["UBUNTU-CVE-2018-12520"],"upstream":["CVE-2018-12520","UBUNTU-CVE-2018-12520"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4842-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-12520"}],"affected":[{"package":{"name":"ntopng","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/ntopng?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2+dfsg1-1ubuntu0.1~esm2"}]}],"versions":["1.2.1+dfsg1-2ubuntu1","2.0+dfsg1-1","2.2+dfsg1-1","2.2+dfsg1-1build1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.2+dfsg1-1ubuntu0.1~esm2","binary_name":"ntopng"},{"binary_version":"2.2+dfsg1-1ubuntu0.1~esm2","binary_name":"ntopng-data"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[{"id":"CVE-2018-12520","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"high"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4842-1.json"}},{"package":{"name":"ntopng","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/ntopng?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2+dfsg1-1ubuntu0.1~esm2"}]}],"versions":["2.4+dfsg1-3","2.4+dfsg1-4","3.2+dfsg1-1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.2+dfsg1-1ubuntu0.1~esm2","binary_name":"ntopng"},{"binary_name":"ntopng-data","binary_version":"3.2+dfsg1-1ubuntu0.1~esm2"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:18.04:LTS","cves":[{"id":"CVE-2018-12520","severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"high","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4842-1.json"}}],"schema_version":"1.7.5"}