{"id":"CVE-2019-17502","aliases":["EUVD-2019-7855","GHSA-j7jq-vqm4-w5q8"],"status":"published","title":"Hydra through 0.1.8 has a NULL pointer dereference and daemon crash when processing POST requests...","description":"Hydra through 0.1.8 has a NULL pointer dereference and daemon crash when processing POST requests that lack a Content-Length header. read.c, request.c, and util.c contribute to this. The process_header_end() function calls boa_atoi(), which ultimately calls atoi() on a NULL pointer.","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":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01704,"percentile":0.77432,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-476"],"published":"2019-10-12T19:53:12Z","modified":"2026-06-17T02:24:00Z","products":[{"vendor":"hydra_project","product":"hydra"}],"references":[{"url":"http://hydra.hellug.gr","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://gist.github.com/fxb6476/0b9883a88ff2ca40de46a8469834e16c","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-17502"},{"url":"https://github.com/advisories/GHSA-j7jq-vqm4-w5q8"}],"sources":{"cve":[{"id":"CVE-2019-17502","description":"Hydra through 0.1.8 has a NULL pointer dereference and daemon crash when processing POST requests that lack a Content-Length header. read.c, request.c, and util.c contribute to this. The process_header_end() function calls boa_atoi(), which ultimately calls atoi() on a NULL pointer.","status":"published","published":"2019-10-12T19:53:12Z","modified":"2024-08-05T01:40:15.782Z","updated_at":"2026-11-02T14:20:24.678649Z"}],"euvd":[{"id":"EUVD-2019-7855","description":"Hydra through 0.1.8 has a NULL pointer dereference and daemon crash when processing POST requests that lack a Content-Length header. read.c, request.c, and util.c contribute to this. The process_header_end() function calls boa_atoi(), which ultimately calls atoi() on a NULL pointer.","status":"published","published":"2019-10-12T19:53:12Z","modified":"2024-08-05T01:40:15Z","updated_at":"2026-11-03T02:40:29.78058Z"}],"ghsa":[{"id":"GHSA-j7jq-vqm4-w5q8","title":"Hydra through 0.1.8 has a NULL pointer dereference and daemon crash when processing POST requests...","description":"Hydra through 0.1.8 has a NULL pointer dereference and daemon crash when processing POST requests that lack a Content-Length header. read.c, request.c, and util.c contribute to this. The process_header_end() function calls boa_atoi(), which ultimately calls atoi() on a NULL pointer.","status":"published","published":"2022-05-24T16:58:41Z","modified":"2024-04-04T02:23:25Z","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-476"],"updated_at":"2026-11-02T14:56:07.671383Z"}],"nvd":[{"id":"CVE-2019-17502","description":"Hydra through 0.1.8 has a NULL pointer dereference and daemon crash when processing POST requests that lack a Content-Length header. read.c, request.c, and util.c contribute to this. The process_header_end() function calls boa_atoi(), which ultimately calls atoi() on a NULL pointer.","status":"published","published":"2019-10-12T20:15:11.41Z","modified":"2026-06-17T02:24:00.94Z","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":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:05:31.860711Z"}]}}