{"id":"CVE-2023-39949","aliases":["DEBIAN-CVE-2023-39949","DSA-5481-1","EUVD-2023-43647","GHSA-3jv9-j9x3-95cg","UBUNTU-CVE-2023-39949","USN-6306-1"],"status":"published","title":"Improper validation of sequence numbers leading to remotely reachable assertion failure","description":"eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.9.1 and 2.6.5, improper validation of sequence numbers may lead to remotely reachable assertion failure. This can remotely crash any Fast-DDS process. Versions 2.9.1 and 2.6.5 contain a patch for this issue.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.01038,"percentile":0.64382,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-617"],"published":"2023-08-11T13:55:14Z","modified":"2026-10-28T02:30:53Z","fixes":[{"ecosystem":"Debian:12","package":"fastdds","fixed_in":["2.9.1+ds-1+deb12u1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"fastdds","fixed_in":["2.10.1+ds-2"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:22.04:LTS","package":"fastdds","fixed_in":["2.5.0+ds-3ubuntu0.1~esm1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"fastdds","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.1+ds-1+deb12u1"}]}],"versions":["2.9.1+ds-1"]},{"source":"osv","ecosystem":"Debian:13","package":"fastdds","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.10.1+ds-2"}]}]},{"source":"osv","ecosystem":"Debian:11","package":"fastdds","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.0+ds-9+deb11u1"}]}],"versions":["2.1.0+ds-9"],"bundled":6},{"source":"osv","ecosystem":"Debian:12","package":"fastdds","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.1+ds-1+deb12u1"}]}],"versions":["2.9.1+ds-1"],"bundled":6},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"fastdds","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.0+ds-3ubuntu0.1~esm1"}]}],"versions":["2.1.0+ds-9","2.4.1+ds-1","2.5.0+ds-3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"fastdds","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5.0+ds-3ubuntu0.1~esm1"}]}],"versions":["2.1.0+ds-9","2.4.1+ds-1","2.5.0+ds-3"],"bundled":7}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"eprosima","product":"fast-dds"},{"vendor":"eprosima","product":"fast_dds"}],"references":[{"url":"https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-3jv9-j9x3-95cg","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","report"]},{"url":"https://github.com/eProsima/Fast-DDS/issues/3236","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","report"]},{"url":"https://github.com/eProsima/Fast-DDS/blob/v2.9.0/src/cpp/rtps/messages/MessageReceiver.cpp#L1059","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","web"]},{"url":"https://www.debian.org/security/2023/dsa-5481","tags":["x_transferred","Third Party Advisory","advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/39xxx/CVE-2023-39949.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-39949","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2023-39949","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-39949","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-6306-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2023-39949","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-38425","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-39534","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-39945","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-39946","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-39947","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2023-39948","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2023-39949","title":"Improper validation of sequence numbers leading to remotely reachable assertion failure","description":"eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.9.1 and 2.6.5, improper validation of sequence numbers may lead to remotely reachable assertion failure. This can remotely crash any Fast-DDS process. Versions 2.9.1 and 2.6.5 contain a patch for this issue.","status":"published","published":"2023-08-11T13:55:14.35Z","modified":"2025-02-13T17:03:18.75Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:35:33.462059Z"}],"euvd":[{"id":"EUVD-2023-43647","description":"eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.9.1 and 2.6.5, improper validation of sequence numbers may lead to remotely reachable assertion failure. This can remotely crash any Fast-DDS process. Versions 2.9.1 and 2.6.5 contain a patch for this issue.","status":"published","published":"2023-08-11T13:55:14Z","modified":"2025-02-13T17:03:18Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T00:03:49.604577Z"}],"nvd":[{"id":"CVE-2023-39949","description":"eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.9.1 and 2.6.5, improper validation of sequence numbers may lead to remotely reachable assertion failure. This can remotely crash any Fast-DDS process. Versions 2.9.1 and 2.6.5 contain a patch for this issue.","status":"published","published":"2023-08-11T14:15:13.807Z","modified":"2026-06-17T06:13:00.697Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:08:22.812138Z"}],"osv":[{"id":"CVE-2023-39949","title":"Improper validation of sequence numbers leading to remotely reachable assertion failure","description":"eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.9.1 and 2.6.5, improper validation of sequence numbers may lead to remotely reachable assertion failure. This can remotely crash any Fast-DDS process. Versions 2.9.1 and 2.6.5 contain a patch for this issue.","status":"published","published":"2023-08-11T13:55:14.35Z","modified":"2026-10-28T02:30:53.999433715Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T15:44:33.244128Z"},{"id":"DEBIAN-CVE-2023-39949","description":"eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.9.1 and 2.6.5, improper validation of sequence numbers may lead to remotely reachable assertion failure. This can remotely crash any Fast-DDS process. Versions 2.9.1 and 2.6.5 contain a patch for this issue.","status":"published","published":"2023-08-11T14:15:13.807Z","modified":"2026-10-26T18:02:31.35457697Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:39.980321Z"},{"id":"UBUNTU-CVE-2023-39949","description":"eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.9.1 and 2.6.5, improper validation of sequence numbers may lead to remotely reachable assertion failure. This can remotely crash any Fast-DDS process. Versions 2.9.1 and 2.6.5 contain a patch for this issue.","status":"published","published":"2023-08-11T14:15:00Z","modified":"2026-04-22T14:10:43.773636Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:54:22.741943Z"},{"id":"DSA-5481-1","title":"fastdds - security update","status":"published","published":"2023-08-20T00:00:00Z","modified":"2026-03-09T02:10:24.085162Z","updated_at":"2026-11-02T15:46:17.892347Z"},{"id":"USN-6306-1","title":"fastdds vulnerabilities","description":"It was discovered that Fast DDS incorrectly handled certain inputs.\nA remote attacker could possibly use this issue to cause a denial of\nservice and information exposure. This issue only affected Ubuntu\n22.04 LTS. (CVE-2021-38425)\n\nIt was discovered that Fast DDS incorrectly handled certain inputs.\nAn attacker could possibly use this issue to cause a crash.\n(CVE-2023-39534, CVE-2023-39945, CVE-2023-39946, CVE-2023-39947,\nCVE-2023-39948, CVE-2023-39949)\n","status":"published","published":"2023-08-24T17:34:36Z","modified":"2026-04-27T16:48:01.28927Z","updated_at":"2026-11-02T16:58:17.305935Z"}]}}