{"id":"CVE-2019-16239","aliases":["DEBIAN-CVE-2019-16239","DLA-1945-1","DSA-4607-1","EUVD-2019-7046","GHSA-j5c8-5345-567f","MGASA-2020-0005","SUSE-SU-2019:2737-1","SUSE-SU-2019:2744-1","SUSE-SU-2019:2744-2","UBUNTU-CVE-2019-16239","USN-4565-1","openSUSE-SU-2019:2385-1","openSUSE-SU-2019:2388-1","openSUSE-SU-2024:13322-1"],"status":"published","title":"process_http_response in OpenConnect before 8.05 has a Buffer Overflow when a malicious server...","description":"process_http_response in OpenConnect before 8.05 has a Buffer Overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes.","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":0.03445,"percentile":0.89089,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-120"],"published":"2019-09-17T11:37:21Z","modified":"2026-10-24T10:30:53Z","fixes":[{"ecosystem":"Debian:12","package":"openconnect","fixed_in":["8.02-1.1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"openconnect","fixed_in":["8.02-1.1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"openconnect","fixed_in":["8.02-1.1"],"sources":["osv"]},{"ecosystem":"Debian:8","package":"openconnect","fixed_in":["6.00-2+deb8u1"],"sources":["osv"]},{"ecosystem":"Debian:9","package":"openconnect","fixed_in":["7.08-1+deb9u1"],"sources":["osv"]},{"ecosystem":"Debian:10","package":"openconnect","fixed_in":["8.02-1+deb10u1"],"sources":["osv"]},{"ecosystem":"Mageia:7","package":"openconnect","fixed_in":["8.05-1.mga7"],"sources":["osv"]},{"ecosystem":"SUSE:Linux Enterprise Workstation Extension 15","package":"openconnect","fixed_in":["7.08-6.3.1"],"sources":["osv"]},{"ecosystem":"SUSE:Linux Enterprise Workstation Extension 15 SP1","package":"openconnect","fixed_in":["7.08-6.3.1"],"sources":["osv"]},{"ecosystem":"SUSE:Linux Enterprise Desktop 12 SP4","package":"openconnect","fixed_in":["7.08-3.4.1"],"sources":["osv"]},{"ecosystem":"SUSE:Linux Enterprise Workstation Extension 12 SP4","package":"openconnect","fixed_in":["7.08-3.4.1"],"sources":["osv"]},{"ecosystem":"SUSE:Linux Enterprise Workstation Extension 12 SP5","package":"openconnect","fixed_in":["7.08-3.4.1"],"sources":["osv"]},{"ecosystem":"Ubuntu:18.04:LTS","package":"openconnect","fixed_in":["7.08-3ubuntu0.18.04.2"],"sources":["osv"]},{"ecosystem":"openSUSE:Leap 15.1","package":"openconnect","fixed_in":["7.08-lp151.6.3.1"],"sources":["osv"]},{"ecosystem":"openSUSE:Leap 15.0","package":"openconnect","fixed_in":["7.08-lp150.5.3.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"openconnect","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.02-1.1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"openconnect","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.02-1.1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"openconnect","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.02-1.1"}]}]},{"source":"osv","ecosystem":"Debian:8","package":"openconnect","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.00-2+deb8u1"}]}],"versions":["6.00-2"]},{"source":"osv","ecosystem":"Debian:9","package":"openconnect","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.08-1+deb9u1"}]}],"versions":["7.08-1"]},{"source":"osv","ecosystem":"Debian:10","package":"openconnect","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.02-1+deb10u1"}]}],"versions":["8.02-1"]},{"source":"osv","ecosystem":"Mageia:7","package":"openconnect","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.05-1.mga7"}]}]},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Workstation Extension 15","package":"openconnect","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.08-6.3.1"}]}]},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Workstation Extension 15 SP1","package":"openconnect","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.08-6.3.1"}]}]},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Desktop 12 SP4","package":"openconnect","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.08-3.4.1"}]}]},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Workstation Extension 12 SP4","package":"openconnect","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.08-3.4.1"}]}]},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Workstation Extension 12 SP5","package":"openconnect","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.08-3.4.1"}]}]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"openconnect","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.08-3ubuntu0.18.04.2"}]}],"versions":["7.08-1","7.08-2","7.08-3","7.08-3ubuntu0.18.04.1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"openconnect","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.08-3ubuntu0.18.04.2"}]}],"versions":["7.08-1","7.08-2","7.08-3","7.08-3ubuntu0.18.04.1"]},{"source":"osv","ecosystem":"openSUSE:Leap 15.1","package":"openconnect","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.08-lp151.6.3.1"}]}]},{"source":"osv","ecosystem":"openSUSE:Leap 15.0","package":"openconnect","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.08-lp150.5.3.1"}]}]}],"products":[{"vendor":"canonical","product":"ubuntu_linux"},{"vendor":"debian","product":"debian_linux"},{"vendor":"fedoraproject","product":"fedora"},{"vendor":"infradead","product":"openconnect"},{"vendor":"opensuse","product":"leap"}],"references":[{"url":"https://t2.fi/schedule/2019/","tags":["x_refsource_MISC","x_transferred","Not Applicable","web","report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WI7ZENFAWCHF2RU4NHPL2CU4WGZ4BNDJ/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"http://lists.infradead.org/pipermail/openconnect-devel/2019-September/005412.html","tags":["x_refsource_CONFIRM","x_transferred","Broken Link","web","report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HDMZGNBLZZKAGBI2PNXYWWKLD2LXKFH6/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FX56KYWC7X4ETV4P6HGJC7GZUEBITBBS/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.debian.org/debian-lts-announce/2019/10/msg00003.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00060.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00061.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://www.debian.org/security/2020/dsa-4607","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","advisory"]},{"url":"https://seclists.org/bugtraq/2020/Jan/31","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://usn.ubuntu.com/4565-1/","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-16239"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FX56KYWC7X4ETV4P6HGJC7GZUEBITBBS/","tags":["report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HDMZGNBLZZKAGBI2PNXYWWKLD2LXKFH6/","tags":["report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WI7ZENFAWCHF2RU4NHPL2CU4WGZ4BNDJ/","tags":["report"]},{"url":"https://github.com/advisories/GHSA-j5c8-5345-567f"},{"url":"https://security-tracker.debian.org/tracker/CVE-2019-16239","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2020-0005.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=25803","tags":["report"]},{"url":"https://lists.opensuse.org/opensuse-updates/2019-10/msg00154.html","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2019/suse-su-20192737-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1151178","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2019-16239","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2019/suse-su-20192744-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2019/suse-su-20192744-2/","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2019-16239","tags":["report"]},{"url":"https://github.com/openconnect/openconnect/commit/875f0a65ab73f4fb581ca870fd3a901bd278f8e8","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-4565-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-16239","tags":["report"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/OMWRLYJKRILC67XCZYLWTYG2K7ETPHND/#OMWRLYJKRILC67XCZYLWTYG2K7ETPHND","tags":["advisory"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/S6SM5TIDEA2A2WT7EFKR25Y6XNWRI675/#S6SM5TIDEA2A2WT7EFKR25Y6XNWRI675","tags":["advisory"]},{"url":"","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2019-16239","description":"process_http_response in OpenConnect before 8.05 has a Buffer Overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes.","status":"published","published":"2019-09-17T11:37:21Z","modified":"2024-08-05T01:10:41.727Z","updated_at":"2026-11-02T14:32:23.189113Z"}],"euvd":[{"id":"EUVD-2019-7046","description":"process_http_response in OpenConnect before 8.05 has a Buffer Overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes.","status":"published","published":"2019-09-17T11:37:21Z","modified":"2024-08-05T01:10:41Z","updated_at":"2026-11-03T02:40:33.71788Z"}],"ghsa":[{"id":"GHSA-j5c8-5345-567f","title":"process_http_response in OpenConnect before 8.05 has a Buffer Overflow when a malicious server...","description":"process_http_response in OpenConnect before 8.05 has a Buffer Overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes.","status":"published","published":"2022-05-24T16:56:22Z","modified":"2023-03-29T21:30:23Z","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"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:54:25.211321Z"}],"nvd":[{"id":"CVE-2019-16239","description":"process_http_response in OpenConnect before 8.05 has a Buffer Overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes.","status":"published","published":"2019-09-17T12:15:10.56Z","modified":"2026-06-17T02:21:58.297Z","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":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:05:28.126831Z"}],"osv":[{"id":"CVE-2019-16239","description":"process_http_response in OpenConnect before 8.05 has a Buffer Overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes.","status":"published","published":"2019-09-17T12:15:10.56Z","modified":"2026-10-24T10:30:53.765544578Z","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":"2026-11-02T15:44:11.361782Z"},{"id":"DEBIAN-CVE-2019-16239","description":"process_http_response in OpenConnect before 8.05 has a Buffer Overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes.","status":"published","published":"2019-09-17T12:15:10.56Z","modified":"2026-09-21T07:02:48.440624484Z","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":"2026-11-02T15:45:31.867036Z"},{"id":"UBUNTU-CVE-2019-16239","description":"process_http_response in OpenConnect before 8.05 has a Buffer Overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes.","status":"published","published":"2019-09-17T12:15:00Z","modified":"2026-04-22T11:57:52.831431Z","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":"2026-11-02T15:54:20.325378Z"},{"id":"DLA-1945-1","title":"openconnect - security update","status":"published","published":"2019-10-03T00:00:00Z","modified":"2026-03-09T01:19:47.481135Z","updated_at":"2026-11-02T15:46:10.227108Z"},{"id":"DSA-4607-1","title":"openconnect - security update","status":"published","published":"2020-01-20T00:00:00Z","modified":"2026-03-09T02:11:25.651288Z","updated_at":"2026-11-02T15:46:17.19998Z"},{"id":"MGASA-2020-0005","title":"Updated openconnect packages fix security vulnerability","description":"Updated openconnect packages fix security vulnerability:\n\nBuffer overflow when a malicious server uses HTTP chunked encoding with\ncrafted chunk sizes (CVE-2019-16239).\n","status":"published","published":"2020-01-05T15:37:51Z","modified":"2026-04-16T04:42:18.744592834Z","updated_at":"2026-11-02T15:49:41.151324Z"},{"id":"openSUSE-SU-2019:2385-1","title":"Security update for openconnect","description":"This update for openconnect fixes the following issues:\n\n- CVE-2019-16239: Fixed a buffer overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes. (bsc#1151178)\n\nThis update was imported from the SUSE:SLE-15:Update update project.","status":"published","published":"2019-10-27T11:24:22Z","modified":"2026-02-04T02:19:50.740365Z","updated_at":"2026-11-02T16:58:30.784344Z"},{"id":"openSUSE-SU-2019:2388-1","title":"Security update for openconnect","description":"This update for openconnect fixes the following issues:\n\n- CVE-2019-16239: Fixed a buffer overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes. (bsc#1151178)\n\nThis update was imported from the SUSE:SLE-15:Update update project.","status":"published","published":"2019-10-27T15:24:56Z","modified":"2026-02-04T03:27:42.306145Z","updated_at":"2026-11-02T16:58:30.784344Z"},{"id":"openSUSE-SU-2024:13322-1","title":"libopenconnect5-9.12-2.1 on GA media","description":"These are all security issues fixed in the libopenconnect5-9.12-2.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T02:51:39.912676Z","updated_at":"2026-11-02T16:58:36.025801Z"},{"id":"SUSE-SU-2019:2737-1","title":"Security update for openconnect","description":"This update for openconnect fixes the following issues:\n\n- CVE-2019-16239: Fixed a buffer overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes. (bsc#1151178)\n","status":"published","published":"2019-10-22T10:02:43Z","modified":"2026-02-04T02:51:11.114943Z","updated_at":"2026-11-02T15:53:47.06185Z"},{"id":"SUSE-SU-2019:2744-1","title":"Security update for openconnect","description":"This update for openconnect fixes the following issues:\n  \n- CVE-2019-16239: Fixed a buffer overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes. (bsc#1151178)\n","status":"published","published":"2019-10-22T13:50:49Z","modified":"2026-02-04T03:20:46.891546Z","updated_at":"2026-11-02T15:53:47.06185Z"},{"id":"SUSE-SU-2019:2744-2","title":"Security update for openconnect","description":"This update for openconnect fixes the following issues:\n  \n- CVE-2019-16239: Fixed a buffer overflow when a malicious server uses HTTP chunked encoding with crafted chunk sizes. (bsc#1151178)\n","status":"published","published":"2019-11-14T16:03:02Z","modified":"2026-02-04T03:55:01.484875Z","updated_at":"2026-11-02T15:53:47.06185Z"},{"id":"USN-4565-1","title":"openconnect vulnerability","description":"It was discovered that OpenConnect has a buffer overflow when a malicious\nserver uses HTTP chunked encoding with crafted chunk sizes. An attacker\ncould use it to provoke a denial of service (crash).\n","status":"published","published":"2020-10-05T13:24:31Z","modified":"2026-04-22T10:08:44.822019Z","updated_at":"2026-11-02T16:58:15.159055Z"}]}}