{"id":"CVE-2018-11574","aliases":["DEBIAN-CVE-2018-11574","EUVD-2018-3600","GHSA-hx7c-3c6c-mhm3","UBUNTU-CVE-2018-11574","USN-3810-1"],"status":"published","title":"Improper input validation together with an integer overflow in the EAP-TLS protocol...","description":"Improper input validation together with an integer overflow in the EAP-TLS protocol implementation in PPPD may cause a crash, information disclosure, or authentication bypass. This implementation is distributed as a patch for PPPD 0.91, and includes the affected eap.c and eap-tls.c files. Configurations that use the `refuse-app` option are unaffected.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.0187,"percentile":0.79501,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-190","CWE-20"],"published":"2018-06-14T00:00:00Z","modified":"2026-10-24T10:30:25Z","fixes":[{"ecosystem":"Debian:12","package":"ppp","fixed_in":["2.4.7-2+3"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"ppp","fixed_in":["2.4.7-2+3"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"ppp","fixed_in":["2.4.7-2+3"],"sources":["osv"]},{"ecosystem":"Ubuntu:14.04:LTS","package":"ppp","fixed_in":["2.4.5-5.1ubuntu2.3"],"sources":["osv"]},{"ecosystem":"Ubuntu:16.04:LTS","package":"ppp","fixed_in":["2.4.7-1+2ubuntu1.16.04.1"],"sources":["osv"]},{"ecosystem":"Ubuntu:18.04:LTS","package":"ppp","fixed_in":["2.4.7-2+2ubuntu1.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"ppp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.7-2+3"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"ppp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.7-2+3"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"ppp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.7-2+3"}]}]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"ppp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.5-5.1ubuntu2.3"}]}],"versions":["2.4.5-5.1ubuntu2","2.4.5-5.1ubuntu2.1","2.4.5-5.1ubuntu2.2"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"ppp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.7-1+2ubuntu1.16.04.1"}]}],"versions":["2.4.6-3.1ubuntu1","2.4.7-1+1ubuntu1","2.4.7-1+2ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"ppp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.7-2+2ubuntu1.1"}]}],"versions":["2.4.7-1+2ubuntu1","2.4.7-1+4ubuntu1","2.4.7-1+4ubuntu3","2.4.7-2+1ubuntu1","2.4.7-2+2ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"ppp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.5-5.1ubuntu2.3"}]}],"versions":["2.4.5-5.1ubuntu2","2.4.5-5.1ubuntu2.1","2.4.5-5.1ubuntu2.2"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"ppp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.7-1+2ubuntu1.16.04.1"}]}],"versions":["2.4.6-3.1ubuntu1","2.4.7-1+1ubuntu1","2.4.7-1+2ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"ppp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.7-2+2ubuntu1.1"}]}],"versions":["2.4.7-1+2ubuntu1","2.4.7-1+4ubuntu1","2.4.7-1+4ubuntu3","2.4.7-2+1ubuntu1","2.4.7-2+2ubuntu1"]}],"products":[{"vendor":"canonical","product":"ubuntu_linux"},{"vendor":"point-to-point_protocol_project","product":"point-to-point_protocol"}],"references":[{"url":"https://usn.ubuntu.com/3810-1/","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","Third Party Advisory","advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2018/06/11/1","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Patch","Third Party Advisory","fix","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-11574"},{"url":"https://usn.ubuntu.com/3810-1"},{"url":"https://github.com/advisories/GHSA-hx7c-3c6c-mhm3"},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-11574","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2018-11574","tags":["report"]},{"url":"https://www.nikhef.nl/~janjust/ppp/ppp-2.4.7-eaptls-mppe-1.101.patch","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-3810-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-11574","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2018-11574","description":"Improper input validation together with an integer overflow in the EAP-TLS protocol implementation in PPPD may cause a crash, information disclosure, or authentication bypass. This implementation is distributed as a patch for PPPD 0.91, and includes the affected eap.c and eap-tls.c files. Configurations that use the `refuse-app` option are unaffected.","status":"published","published":"2018-06-14T20:00:00Z","modified":"2025-12-03T21:09:49.904Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-190"],"updated_at":"2026-11-02T14:35:09.139955Z"}],"euvd":[{"id":"EUVD-2018-3600","description":"Improper input validation together with an integer overflow in the EAP-TLS protocol implementation in PPPD may cause a crash, information disclosure, or authentication bypass. This implementation is distributed as a patch for PPPD 0.91, and includes the affected eap.c and eap-tls.c files. Configurations that use the `refuse-app` option are unaffected.","status":"published","published":"2018-06-14T20:00:00Z","modified":"2025-12-03T21:09:49Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T19:49:10.321316Z"}],"ghsa":[{"id":"GHSA-hx7c-3c6c-mhm3","title":"Improper input validation together with an integer overflow in the EAP-TLS protocol...","description":"Improper input validation together with an integer overflow in the EAP-TLS protocol implementation in PPPD may cause a crash, information disclosure, or authentication bypass. This implementation is distributed as a patch for PPPD 0.91, and includes the affected eap.c and eap-tls.c files. Configurations that use the `refuse-app` option are unaffected.","status":"published","published":"2022-05-13T01:28:14Z","modified":"2025-12-03T21:31:55Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-20","CWE-190"],"updated_at":"2026-11-02T15:05:01.902395Z"}],"nvd":[{"id":"CVE-2018-11574","description":"Improper input validation together with an integer overflow in the EAP-TLS protocol implementation in PPPD may cause a crash, information disclosure, or authentication bypass. This implementation is distributed as a patch for PPPD 0.91, and includes the affected eap.c and eap-tls.c files. Configurations that use the `refuse-app` option are unaffected.","status":"published","published":"2018-06-14T20:29:00.253Z","modified":"2026-06-17T01:36:11.767Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-20","CWE-190"],"updated_at":"2026-11-02T14:04:29.837913Z"}],"osv":[{"id":"CVE-2018-11574","description":"Improper input validation together with an integer overflow in the EAP-TLS protocol implementation in PPPD may cause a crash, information disclosure, or authentication bypass. This implementation is distributed as a patch for PPPD 0.91, and includes the affected eap.c and eap-tls.c files. Configurations that use the `refuse-app` option are unaffected.","status":"published","published":"2018-06-14T20:29:00.253Z","modified":"2026-10-24T10:30:25.372002151Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:07.934182Z"},{"id":"DEBIAN-CVE-2018-11574","description":"Improper input validation together with an integer overflow in the EAP-TLS protocol implementation in PPPD may cause a crash, information disclosure, or authentication bypass. This implementation is distributed as a patch for PPPD 0.91, and includes the affected eap.c and eap-tls.c files. Configurations that use the `refuse-app` option are unaffected.","status":"published","published":"2018-06-14T20:29:00.253Z","modified":"2026-10-23T18:03:46.918764501Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:29.988046Z"},{"id":"UBUNTU-CVE-2018-11574","description":"Improper input validation together with an integer overflow in the EAP-TLS protocol implementation in PPPD may cause a crash, information disclosure, or authentication bypass. This implementation is distributed as a patch for PPPD 0.91, and includes the affected eap.c and eap-tls.c files. Configurations that use the `refuse-app` option are unaffected.","status":"published","published":"2018-06-14T00:00:00Z","modified":"2026-04-22T11:42:00.971454Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"},{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:54:16.544091Z"},{"id":"USN-3810-1","title":"ppp vulnerability","description":"Ivan Gotovchits discovered that ppp incorrectly handled the EAP-TLS\nprotocol. A remote attacker could use this issue to cause ppp to crash,\nresulting in a denial of service, or possibly bypass authentication.\n","status":"published","published":"2018-11-06T16:12:08Z","modified":"2026-04-22T09:52:16.201606Z","updated_at":"2026-11-02T16:58:14.019824Z"}]}}