{"id":"USN-6121-1","summary":"nanopb vulnerabilities","details":"It was discovered that Nanopb incorrectly handled certain decode messages.\nAn attacker could possibly use this cause a denial of service or expose\nsensitive information. (CVE-2020-26243)\n\nIt was discovered that Nanopb incorrectly handled certain decode messages.\nAn attacker could possibly use this issue to cause a denial of service\nor execute arbitrary code. (CVE-2021-21401)\n","modified":"2026-04-22T10:35:16.428853Z","published":"2023-05-30T16:09:29Z","related":["UBUNTU-CVE-2020-26243","UBUNTU-CVE-2021-21401"],"upstream":["CVE-2020-26243","CVE-2021-21401","UBUNTU-CVE-2020-26243","UBUNTU-CVE-2021-21401"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6121-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-26243"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-21401"}],"affected":[{"package":{"name":"nanopb","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/nanopb@0.4.1-1ubuntu0.1~esm1?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.4.1-1ubuntu0.1~esm1"}]}],"versions":["0.4.1-1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.4.1-1ubuntu0.1~esm1","binary_name":"nanopb"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6121-1.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:3.1/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-2020-26243"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L","type":"CVSS_V3"},{"score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2021-21401"}],"ecosystem":"Ubuntu:Pro:20.04:LTS"}}}],"schema_version":"1.7.5"}