{"id":"CVE-2018-16789","aliases":["DEBIAN-CVE-2018-16789","EUVD-2018-8589","GHSA-c93f-9f7g-fv7h","UBUNTU-CVE-2018-16789"],"status":"published","title":"libhttp/url.c in shellinabox through 2.20 has an implementation flaw in the HTTP request parsing...","description":"libhttp/url.c in shellinabox through 2.20 has an implementation flaw in the HTTP request parsing logic. By sending a crafted multipart/form-data HTTP request, an attacker could exploit this to force shellinaboxd into an infinite loop, exhausting available CPU resources and taking the service down.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.05986,"percentile":0.93358,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-835"],"published":"2019-03-17T18:36:51Z","modified":"2026-10-23T18:03:19Z","fixes":[{"ecosystem":"Debian:12","package":"shellinabox","fixed_in":["2.21"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"shellinabox","fixed_in":["2.21"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"shellinabox","fixed_in":["2.21"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"shellinabox","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.21"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"shellinabox","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.21"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"shellinabox","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.21"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"shellinabox","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.17","2.18","2.19"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"shellinabox","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.20","2.20build1"]}],"products":[{"vendor":"shellinabox_project","product":"shellinabox"}],"references":[{"url":"http://packetstormsecurity.com/files/149978/Shell-In-A-Box-2.2.0-Denial-Of-Service.html","tags":["x_refsource_MISC","x_transferred","Exploit","Patch","Third Party Advisory","VDB Entry","fix"]},{"url":"http://seclists.org/fulldisclosure/2018/Oct/50","tags":["x_refsource_MISC","x_transferred","Exploit","Mailing List","Patch","Third Party Advisory","fix"]},{"url":"https://github.com/shellinabox/shellinabox/commit/4f0ecc31ac6f985e0dd3f5a52cbfc0e9251f6361","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://code.google.com/archive/p/shellinabox/issues","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-16789"},{"url":"https://github.com/advisories/GHSA-c93f-9f7g-fv7h"},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-16789","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2018-16789","tags":["report"]},{"url":"https://github.com/shellinabox/shellinabox/pull/446","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-16789","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2018-16789","description":"libhttp/url.c in shellinabox through 2.20 has an implementation flaw in the HTTP request parsing logic. By sending a crafted multipart/form-data HTTP request, an attacker could exploit this to force shellinaboxd into an infinite loop, exhausting available CPU resources and taking the service down.","status":"published","published":"2019-03-17T18:36:51Z","modified":"2024-08-05T10:32:53.996Z","updated_at":"2026-11-02T14:35:11.426178Z"}],"euvd":[{"id":"EUVD-2018-8589","description":"libhttp/url.c in shellinabox through 2.20 has an implementation flaw in the HTTP request parsing logic. By sending a crafted multipart/form-data HTTP request, an attacker could exploit this to force shellinaboxd into an infinite loop, exhausting available CPU resources and taking the service down.","status":"published","published":"2019-03-17T18:36:51Z","modified":"2024-08-05T10:32:53Z","updated_at":"2026-11-03T02:39:40.316949Z"}],"ghsa":[{"id":"GHSA-c93f-9f7g-fv7h","title":"libhttp/url.c in shellinabox through 2.20 has an implementation flaw in the HTTP request parsing...","description":"libhttp/url.c in shellinabox through 2.20 has an implementation flaw in the HTTP request parsing logic. By sending a crafted multipart/form-data HTTP request, an attacker could exploit this to force shellinaboxd into an infinite loop, exhausting available CPU resources and taking the service down.","status":"published","published":"2022-05-13T01:19:17Z","modified":"2023-02-01T05:05:40Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T14:50:16.372723Z"}],"nvd":[{"id":"CVE-2018-16789","description":"libhttp/url.c in shellinabox through 2.20 has an implementation flaw in the HTTP request parsing logic. By sending a crafted multipart/form-data HTTP request, an attacker could exploit this to force shellinaboxd into an infinite loop, exhausting available CPU resources and taking the service down.","status":"published","published":"2019-03-21T16:00:22.547Z","modified":"2026-06-17T01:44:49.297Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T14:04:54.21788Z"}],"osv":[{"id":"CVE-2018-16789","description":"libhttp/url.c in shellinabox through 2.20 has an implementation flaw in the HTTP request parsing logic. By sending a crafted multipart/form-data HTTP request, an attacker could exploit this to force shellinaboxd into an infinite loop, exhausting available CPU resources and taking the service down.","status":"published","published":"2019-03-21T16:00:22.547Z","modified":"2026-10-20T13:26:52.195905023Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:08.533609Z"},{"id":"DEBIAN-CVE-2018-16789","description":"libhttp/url.c in shellinabox through 2.20 has an implementation flaw in the HTTP request parsing logic. By sending a crafted multipart/form-data HTTP request, an attacker could exploit this to force shellinaboxd into an infinite loop, exhausting available CPU resources and taking the service down.","status":"published","published":"2019-03-21T16:00:22.547Z","modified":"2026-10-23T18:03:19.792048273Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:30.290351Z"},{"id":"UBUNTU-CVE-2018-16789","description":"libhttp/url.c in shellinabox through 2.20 has an implementation flaw in the HTTP request parsing logic. By sending a crafted multipart/form-data HTTP request, an attacker could exploit this to force shellinaboxd into an infinite loop, exhausting available CPU resources and taking the service down.","status":"published","published":"2019-03-21T16:00:00Z","modified":"2025-10-24T04:47:12Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:17.496046Z"}]}}