{"id":"USN-7616-1","summary":"logback vulnerabilities","details":"It was discovered that logback could read malicious configuration files\nfrom LDAP servers. An attacker with the required permissions could possibly\nuse this issue to execute arbitrary code. This issue only affected Ubuntu\n16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2021-42550)  It was\ndiscovered that logback contained a serialization vulnerability. An\nattacker could possibly use this issue to cause a denial of service.\n(CVE-2023-6378)","modified":"2026-02-10T04:49:33Z","published":"2025-07-02T18:53:34Z","related":["UBUNTU-CVE-2021-42550","UBUNTU-CVE-2023-6378"],"upstream":["CVE-2021-42550","CVE-2023-6378","UBUNTU-CVE-2021-42550","UBUNTU-CVE-2023-6378"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7616-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-42550"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-6378"}],"affected":[{"package":{"name":"logback","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/logback@1:1.1.3-2ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.1.3-2ubuntu0.1~esm1"}]}],"versions":["1:1.1.3-2"],"ecosystem_specific":{"binaries":[{"binary_name":"liblogback-java","binary_version":"1:1.1.3-2ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2021-42550","severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2023-6378","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:16.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7616-1.json"}},{"package":{"name":"logback","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/logback@1:1.2.3-2ubuntu1~18.04.1+esm1?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.2.3-2ubuntu1~18.04.1+esm1"}]}],"versions":["1:1.1.9-4","1:1.1.9-5","1:1.2.3-2","1:1.2.3-2ubuntu1~18.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"liblogback-java","binary_version":"1:1.2.3-2ubuntu1~18.04.1+esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2021-42550","severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2023-6378","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:18.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7616-1.json"}},{"package":{"name":"logback","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/logback@1:1.2.3-5ubuntu0.1~esm1?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.2.3-5ubuntu0.1~esm1"}]}],"versions":["1:1.2.3-5"],"ecosystem_specific":{"binaries":[{"binary_name":"liblogback-java","binary_version":"1:1.2.3-5ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2021-42550","severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2023-6378","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:20.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7616-1.json"}},{"package":{"name":"logback","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/logback@1:1.2.10-1ubuntu0.1~esm1?arch=source&distro=esm-apps/jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.2.10-1ubuntu0.1~esm1"}]}],"versions":["1:1.2.3-6","1:1.2.7-1","1:1.2.8-1","1:1.2.9-1","1:1.2.10-1"],"ecosystem_specific":{"binaries":[{"binary_name":"liblogback-java","binary_version":"1:1.2.10-1ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2023-6378","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:22.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7616-1.json"}}],"schema_version":"1.7.3"}