{"id":"USN-9075-1","summary":"libjwt vulnerability","details":"It was discovered that libjwt did not use a constant-time comparison when\nverifying HMAC signatures. A remote attacker could possibly use this issue\nto forge signatures through a timing side-channel attack and bypass\nauthentication.","modified":"2026-11-13T11:28:27.257721508Z","published":"2026-11-12T20:52:10Z","related":["UBUNTU-CVE-2024-25189"],"upstream":["CVE-2024-25189","UBUNTU-CVE-2024-25189"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-9075-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-25189"}],"affected":[{"package":{"name":"libjwt","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libjwt?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.0-1ubuntu0.1~esm1"}]}],"versions":["1.8.0+dfsg-1","1.8.0+dfsg-2","1.9.0-1","1.9.0-1build1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"1.9.0-1ubuntu0.1~esm1","binary_name":"libjwt0"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:18.04:LTS","cves":[{"id":"CVE-2024-25189","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-9075-1.json"}},{"package":{"name":"libjwt","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/libjwt?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.10.2-1ubuntu0.20.04.1~esm1"}]}],"versions":["1.10.2-1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_name":"libjwt-gnutls0","binary_version":"1.10.2-1ubuntu0.20.04.1~esm1"},{"binary_version":"1.10.2-1ubuntu0.20.04.1~esm1","binary_name":"libjwt0"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:20.04:LTS","cves":[{"id":"CVE-2024-25189","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"score":"medium","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-9075-1.json"}},{"package":{"name":"libjwt","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/libjwt?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.10.2-1ubuntu0.22.04.1~esm1"}]}],"versions":["1.10.2-1","1.10.2-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libjwt-gnutls0","binary_version":"1.10.2-1ubuntu0.22.04.1~esm1"},{"binary_version":"1.10.2-1ubuntu0.22.04.1~esm1","binary_name":"libjwt0"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:22.04:LTS","cves":[{"id":"CVE-2024-25189","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-9075-1.json"}}],"schema_version":"1.9.2"}