{"id":"CVE-2023-52557","aliases":["EUVD-2023-57181","GHSA-fr6m-422w-fv5h"],"status":"published","title":"OpenBSD 7.3 invalid l2tp message npppd crash","description":"In OpenBSD 7.3 before errata 016, npppd(8) could crash by a l2tp message which has an AVP (Attribute-Value Pair) with wrong length.","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":"adp","from":"cve"},"epss":{"day":"2026-11-12","score":0.00555,"percentile":0.46784,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-131","CWE-805"],"published":"2024-03-01T16:14:56Z","modified":"2026-10-28T10:36:17Z","products":[{"vendor":"openbsd","product":"openbsd"}],"references":[{"url":"https://ftp.openbsd.org/pub/OpenBSD/patches/7.3/common/016_npppd.patch.sig","tags":["x_transferred","Patch","web"]},{"url":"https://github.com/openbsd/src/commit/abf3a29384c582c807a621e7fc6e7c68d0cafe9b","tags":["x_transferred","Patch","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-52557","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-fr6m-422w-fv5h"},{"url":"https://github.com/openbsd/src/","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52557.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-52557","title":"OpenBSD 7.3 invalid l2tp message npppd crash","description":"In OpenBSD 7.3 before errata 016, npppd(8) could crash by a l2tp message which has an AVP (Attribute-Value Pair) with wrong length.\n","status":"published","published":"2024-03-01T16:14:56.065Z","modified":"2024-08-02T23:03:20.647Z","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":"adp"}],"cwes":["CWE-131","CWE-805"],"updated_at":"2026-11-02T14:35:18.88314Z"}],"euvd":[{"id":"EUVD-2023-57181","description":"In OpenBSD 7.3 before errata 016, npppd(8) could crash by a l2tp message which has an AVP (Attribute-Value Pair) with wrong length.\n","status":"published","published":"2024-03-01T16:14:56Z","modified":"2024-08-02T23:03:20Z","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":"2026-11-03T03:26:06.635969Z"}],"ghsa":[{"id":"GHSA-fr6m-422w-fv5h","title":"In OpenBSD 7.3 before errata 016, npppd(8) could crash by a l2tp message which has an AVP ...","description":"In OpenBSD 7.3 before errata 016, npppd(8) could crash by a l2tp message which has an AVP (Attribute-Value Pair) with wrong length.\n","status":"published","published":"2024-03-01T18:30:24Z","modified":"2026-03-24T05:08:46Z","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-131","CWE-805"],"updated_at":"2026-11-02T15:06:49.419052Z"}],"nvd":[{"id":"CVE-2023-52557","description":"In OpenBSD 7.3 before errata 016, npppd(8) could crash by a l2tp message which has an AVP (Attribute-Value Pair) with wrong length.\n","status":"published","published":"2024-03-01T17:15:07.257Z","modified":"2026-06-17T06:43:01.14Z","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"}],"cwes":["CWE-131","CWE-805"],"updated_at":"2026-11-02T14:09:07.077422Z"}],"osv":[{"id":"CVE-2023-52557","title":"OpenBSD 7.3 invalid l2tp message npppd crash","description":"In OpenBSD 7.3 before errata 016, npppd(8) could crash by a l2tp message which has an AVP (Attribute-Value Pair) with wrong length.\n","status":"published","published":"2024-03-01T16:14:56.065Z","modified":"2026-10-28T10:36:17.329490369Z","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-131"],"updated_at":"2026-11-02T15:44:35.245372Z"}]}}