{"id":"CVE-2017-15705","aliases":["ALPINE-CVE-2017-15705","DEBIAN-CVE-2017-15705","DLA-1578-1","EUVD-2017-7138","GHSA-m63q-qrvc-wwrm","MGASA-2018-0425","RHSA-2018:2916","SUSE-SU-2019:1961-1","SUSE-SU-2019:2011-1","UBUNTU-CVE-2017-15705","USN-3811-1","openSUSE-SU-2019:1831-1","openSUSE-SU-2024:11395-1"],"status":"published","title":"A denial of service vulnerability was identified that exists in Apache SpamAssassin before 3.4.2....","description":"A denial of service vulnerability was identified that exists in Apache SpamAssassin before 3.4.2. The vulnerability arises with certain unclosed tags in emails that cause markup to be handled incorrectly leading to scan timeouts. In Apache SpamAssassin, using HTML::Parser, we setup an object and hook into the begin and end tag event handlers In both cases, the \"open\" event is immediately followed by a \"close\" event - even if the tag *does not* close in the HTML being parsed. Because of this, we are missing the \"text\" event to deal with the object normally. This can cause carefully crafted emails that might take more scan time than expected leading to a Denial of Service. The issue is possibly a bug or design decision in HTML::Parser that specifically impacts the way Apache SpamAssassin uses the module with poorly formed html. The exploit has been seen in the wild but not believed to have been purposefully part of a Denial of Service attempt. We are concerned that there may be attempts to abuse the vulnerability in the future.","severity":{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.07879,"percentile":0.94739,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2018-09-17T00:00:00Z","modified":"2026-10-24T10:30:45Z","fixes":[{"ecosystem":"Alpine:v3.10","package":"spamassassin","fixed_in":["3.4.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.11","package":"spamassassin","fixed_in":["3.4.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.12","package":"spamassassin","fixed_in":["3.4.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.13","package":"spamassassin","fixed_in":["3.4.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.14","package":"spamassassin","fixed_in":["3.4.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.15","package":"spamassassin","fixed_in":["3.4.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.16","package":"spamassassin","fixed_in":["3.4.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.17","package":"spamassassin","fixed_in":["3.4.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.18","package":"spamassassin","fixed_in":["3.4.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.19","package":"spamassassin","fixed_in":["3.4.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.20","package":"spamassassin","fixed_in":["3.4.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"spamassassin","fixed_in":["3.4.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"spamassassin","fixed_in":["3.4.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"spamassassin","fixed_in":["3.4.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"spamassassin","fixed_in":["3.4.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.8","package":"spamassassin","fixed_in":["3.4.3-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.9","package":"spamassassin","fixed_in":["3.4.2-r0"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"spamassassin","fixed_in":["3.4.2-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"spamassassin","fixed_in":["3.4.2-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"spamassassin","fixed_in":["3.4.2-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:14.04:LTS","package":"spamassassin","fixed_in":["3.4.2-0ubuntu0.14.04.1"],"sources":["osv"]},{"ecosystem":"Ubuntu:16.04:LTS","package":"spamassassin","fixed_in":["3.4.2-0ubuntu0.16.04.1"],"sources":["osv"]},{"ecosystem":"Ubuntu:18.04:LTS","package":"spamassassin","fixed_in":["3.4.2-0ubuntu0.18.04.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.10","package":"spamassassin","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.2-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.11","package":"spamassassin","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.2-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.12","package":"spamassassin","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.2-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.13","package":"spamassassin","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.2-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.14","package":"spamassassin","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.2-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.15","package":"spamassassin","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.2-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.16","package":"spamassassin","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.2-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.17","package":"spamassassin","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.2-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.18","package":"spamassassin","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.2-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.19","package":"spamassassin","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.2-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.20","package":"spamassassin","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.2-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.21","package":"spamassassin","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.2-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.22","package":"spamassassin","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.2-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.23","package":"spamassassin","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.2-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"spamassassin","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.4.2-r0"}]}]},{"source":"osv","ecosystem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denial of service vulnerability was identified that exists in Apache SpamAssassin before 3.4.2. The vulnerability arises with certain unclosed tags in emails that cause markup to be handled incorrectly leading to scan timeouts. In Apache SpamAssassin, using HTML::Parser, we setup an object and hook into the begin and end tag event handlers In both cases, the \"open\" event is immediately followed by a \"close\" event - even if the tag *does not* close in the HTML being parsed. Because of this, we are missing the \"text\" event to deal with the object normally. This can cause carefully crafted emails that might take more scan time than expected leading to a Denial of Service. The issue is possibly a bug or design decision in HTML::Parser that specifically impacts the way Apache SpamAssassin uses the module with poorly formed html. The exploit has been seen in the wild but not believed to have been purposefully part of a Denial of Service attempt. We are concerned that there may be attempts to abuse the vulnerability in the future.","status":"published","published":"2018-09-17T14:00:00Z","modified":"2024-09-16T23:15:46.185Z","updated_at":"2026-11-02T14:33:14.271248Z"}],"euvd":[{"id":"EUVD-2017-7138","description":"A denial of service vulnerability was identified that exists in Apache SpamAssassin before 3.4.2. The vulnerability arises with certain unclosed tags in emails that cause markup to be handled incorrectly leading to scan timeouts. In Apache SpamAssassin, using HTML::Parser, we setup an object and hook into the begin and end tag event handlers In both cases, the \"open\" event is immediately followed by a \"close\" event - even if the tag *does not* close in the HTML being parsed. Because of this, we are missing the \"text\" event to deal with the object normally. This can cause carefully crafted emails that might take more scan time than expected leading to a Denial of Service. The issue is possibly a bug or design decision in HTML::Parser that specifically impacts the way Apache SpamAssassin uses the module with poorly formed html. The exploit has been seen in the wild but not believed to have been purposefully part of a Denial of Service attempt. We are concerned that there may be attempts to abuse the vulnerability in the future.","status":"published","published":"2018-09-17T14:00:00Z","modified":"2024-09-16T23:15:46Z","updated_at":"2026-11-03T00:54:55.200068Z"}],"ghsa":[{"id":"GHSA-m63q-qrvc-wwrm","title":"A denial of service vulnerability was identified that exists in Apache SpamAssassin before 3.4.2....","description":"A denial of service vulnerability was identified that exists in Apache SpamAssassin before 3.4.2. The vulnerability arises with certain unclosed tags in emails that cause markup to be handled incorrectly leading to scan timeouts. In Apache SpamAssassin, using HTML::Parser, we setup an object and hook into the begin and end tag event handlers In both cases, the \"open\" event is immediately followed by a \"close\" event - even if the tag *does not* close in the HTML being parsed. Because of this, we are missing the \"text\" event to deal with the object normally. This can cause carefully crafted emails that might take more scan time than expected leading to a Denial of Service. The issue is possibly a bug or design decision in HTML::Parser that specifically impacts the way Apache SpamAssassin uses the module with poorly formed html. The exploit has been seen in the wild but not believed to have been purposefully part of a Denial of Service attempt. We are concerned that there may be attempts to abuse the vulnerability in the future.","status":"published","published":"2022-05-14T01:48:30Z","modified":"2023-02-02T05:04:34Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:51:54.365671Z"}],"nvd":[{"id":"CVE-2017-15705","description":"A denial of service vulnerability was identified that exists in Apache SpamAssassin before 3.4.2. The vulnerability arises with certain unclosed tags in emails that cause markup to be handled incorrectly leading to scan timeouts. In Apache SpamAssassin, using HTML::Parser, we setup an object and hook into the begin and end tag event handlers In both cases, the \"open\" event is immediately followed by a \"close\" event - even if the tag *does not* close in the HTML being parsed. Because of this, we are missing the \"text\" event to deal with the object normally. This can cause carefully crafted emails that might take more scan time than expected leading to a Denial of Service. The issue is possibly a bug or design decision in HTML::Parser that specifically impacts the way Apache SpamAssassin uses the module with poorly formed html. The exploit has been seen in the wild but not believed to have been purposefully part of a Denial of Service attempt. We are concerned that there may be attempts to abuse the vulnerability in the future.","status":"published","published":"2018-09-17T14:29:00.293Z","modified":"2026-06-17T01:08:07.693Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","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-20"],"updated_at":"2026-11-02T14:04:19.545286Z"}],"osv":[{"id":"ALPINE-CVE-2017-15705","description":"A denial of service vulnerability was identified that exists in Apache SpamAssassin before 3.4.2. The vulnerability arises with certain unclosed tags in emails that cause markup to be handled incorrectly leading to scan timeouts. In Apache SpamAssassin, using HTML::Parser, we setup an object and hook into the begin and end tag event handlers In both cases, the \"open\" event is immediately followed by a \"close\" event - even if the tag *does not* close in the HTML being parsed. Because of this, we are missing the \"text\" event to deal with the object normally. This can cause carefully crafted emails that might take more scan time than expected leading to a Denial of Service. The issue is possibly a bug or design decision in HTML::Parser that specifically impacts the way Apache SpamAssassin uses the module with poorly formed html. The exploit has been seen in the wild but not believed to have been purposefully part of a Denial of Service attempt. We are concerned that there may be attempts to abuse the vulnerability in the future.","status":"published","published":"2018-09-17T14:29:00.293Z","modified":"2026-06-15T18:18:06.793198374Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T15:27:46.716249Z"},{"id":"CVE-2017-15705","description":"A denial of service vulnerability was identified that exists in Apache SpamAssassin before 3.4.2. The vulnerability arises with certain unclosed tags in emails that cause markup to be handled incorrectly leading to scan timeouts. In Apache SpamAssassin, using HTML::Parser, we setup an object and hook into the begin and end tag event handlers In both cases, the \"open\" event is immediately followed by a \"close\" event - even if the tag *does not* close in the HTML being parsed. Because of this, we are missing the \"text\" event to deal with the object normally. This can cause carefully crafted emails that might take more scan time than expected leading to a Denial of Service. The issue is possibly a bug or design decision in HTML::Parser that specifically impacts the way Apache SpamAssassin uses the module with poorly formed html. The exploit has been seen in the wild but not believed to have been purposefully part of a Denial of Service attempt. We are concerned that there may be attempts to abuse the vulnerability in the future.","status":"published","published":"2018-09-17T14:29:00.293Z","modified":"2026-10-24T10:30:45.059734478Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T15:44:04.853379Z"},{"id":"DEBIAN-CVE-2017-15705","description":"A denial of service vulnerability was identified that exists in Apache SpamAssassin before 3.4.2. The vulnerability arises with certain unclosed tags in emails that cause markup to be handled incorrectly leading to scan timeouts. In Apache SpamAssassin, using HTML::Parser, we setup an object and hook into the begin and end tag event handlers In both cases, the \"open\" event is immediately followed by a \"close\" event - even if the tag *does not* close in the HTML being parsed. Because of this, we are missing the \"text\" event to deal with the object normally. This can cause carefully crafted emails that might take more scan time than expected leading to a Denial of Service. The issue is possibly a bug or design decision in HTML::Parser that specifically impacts the way Apache SpamAssassin uses the module with poorly formed html. The exploit has been seen in the wild but not believed to have been purposefully part of a Denial of Service attempt. We are concerned that there may be attempts to abuse the vulnerability in the future.","status":"published","published":"2018-09-17T14:29:00.293Z","modified":"2026-09-01T20:02:41.777195701Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T15:45:28.801885Z"},{"id":"RHSA-2018:2916","title":"Red Hat Security Advisory: spamassassin security update","status":"published","published":"2024-09-16T01:47:40Z","modified":"2026-06-26T10:38:59Z","cvss":[{"version":"3.0","score":8.4,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:05.383061Z"},{"id":"UBUNTU-CVE-2017-15705","description":"A denial of service vulnerability was identified that exists in Apache SpamAssassin before 3.4.2. The vulnerability arises with certain unclosed tags in emails that cause markup to be handled incorrectly leading to scan timeouts. In Apache SpamAssassin, using HTML::Parser, we setup an object and hook into the begin and end tag event handlers In both cases, the \"open\" event is immediately followed by a \"close\" event - even if the tag *does not* close in the HTML being parsed. Because of this, we are missing the \"text\" event to deal with the object normally. This can cause carefully crafted emails that might take more scan time than expected leading to a Denial of Service. The issue is possibly a bug or design decision in HTML::Parser that specifically impacts the way Apache SpamAssassin uses the module with poorly formed html. The exploit has been seen in the wild but not believed to have been purposefully part of a Denial of Service attempt. We are concerned that there may be attempts to abuse the vulnerability in the future.","status":"published","published":"2018-09-17T00:00:00Z","modified":"2026-02-04T02:58:31.781383Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T15:54:14.563448Z"},{"id":"DLA-1578-1","title":"spamassassin - security update","status":"published","published":"2018-11-13T00:00:00Z","modified":"2026-03-09T01:21:50.343955Z","updated_at":"2026-11-02T15:46:09.777694Z"},{"id":"MGASA-2018-0425","title":"Updated spamassassin packages fix security vulnerabilities","description":"Updated spamassassin package fixes security vulnerabilities:\n\nA reliance on \".\" in @INC in one configuration script (CVE-2016-1238).\n\nA denial of service vulnerability arises with certain unclosed tags in\nemails that cause markup to be handled incorrectly leading to scan\ntimeouts (CVE-2017-15705).\n\nA potential Remote Code Execution bug with the PDFInfo plugin\n(CVE-2018-11780).\n\nA local user code injection in the meta rule syntax (CVE-2018-11781).\n","status":"published","published":"2018-10-30T18:01:43Z","modified":"2026-04-16T06:22:29.978632277Z","updated_at":"2026-11-02T15:49:40.793816Z"},{"id":"openSUSE-SU-2019:1831-1","title":"Security update for spamassassin","description":"This update for spamassassin to version 3.4.2 fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2018-11781: Fixed an issue where a local user could inject code in the meta rule syntax (bsc#1108748).\n- CVE-2018-11780: Fixed a potential remote code execution vulnerability in the PDFInfo plugin (bsc#1108750).\n- CVE-2017-15705: Fixed a denial of service through unclosed tags in crafted emails (bsc#1108745).\n- CVE-2016-1238: Fixed an issue where perl would load modules from the current directory (bsc#1108749).\n\nNon-security issues fixed:\n\n- Use systemd timers instead of cron (bsc#1115411)\n- Fixed incompatibility with Net::DNS \u003e= 1.01 (bsc#1107765)\n- Fixed warning about deprecated regex during sa-update (bsc#1069831)\n\nThis update was imported from the SUSE:SLE-15:Update update project.","status":"published","published":"2019-08-06T15:40:29Z","modified":"2026-02-04T04:27:25.52352Z","updated_at":"2026-11-02T16:58:30.784344Z"},{"id":"openSUSE-SU-2024:11395-1","title":"perl-Mail-SpamAssassin-3.4.6-71.3 on GA media","description":"These are all security issues fixed in the perl-Mail-SpamAssassin-3.4.6-71.3 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T02:16:54.806419Z","updated_at":"2026-11-02T16:58:35.195147Z"},{"id":"SUSE-SU-2019:1961-1","title":"Security update for spamassassin","description":"This update for spamassassin to version 3.4.2 fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2017-15705: Fixed denial of service via unclosed tags in crafted emails (bsc#1108745).\n- CVE-2018-11781: Fixed a code injection in the meta rule syntax by local users (bsc#1108748).\n- CVE-2018-11780: Fixed a potential remote code execution vulnerability in PDFInfo plugin (bsc#1108750).\n\nNon-security issues fixed:\n\n- Added four new plugins (disabled by default): HashBL, ResourceLimits, FromNameSpoof, Phishing\n- sa-update script: optional support for SHA-256 / SHA-512 been added for better validation of rules\n- GeoIP2 support has been added to RelayCountry and URILocalBL plugins\n- Several new or enhanced configuration options\n","status":"published","published":"2019-07-24T08:32:56Z","modified":"2026-02-04T03:42:55.070409Z","updated_at":"2026-11-02T15:53:46.44301Z"},{"id":"SUSE-SU-2019:2011-1","title":"Security update for spamassassin","description":"This update for spamassassin to version 3.4.2 fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2018-11781: Fixed an issue where a local user could inject code in the meta rule syntax (bsc#1108748).\n- CVE-2018-11780: Fixed a potential remote code execution vulnerability in the PDFInfo plugin (bsc#1108750).\n- CVE-2017-15705: Fixed a denial of service through unclosed tags in crafted emails (bsc#1108745).\n- CVE-2016-1238: Fixed an issue where perl would load modules from the current directory (bsc#1108749).\n\nNon-security issues fixed:\n\n- Use systemd timers instead of cron (bsc#1115411)\n- Fixed incompatibility with Net::DNS \u003e= 1.01 (bsc#1107765)\n- Fixed warning about deprecated regex during sa-update (bsc#1069831)\n","status":"published","published":"2019-07-29T12:46:29Z","modified":"2026-02-04T04:01:02.871865Z","updated_at":"2026-11-02T15:53:46.44301Z"},{"id":"USN-3811-1","title":"spamassassin vulnerabilities","description":"It was discovered that SpamAssassin incorrectly handled certain unclosed\ntags in emails. A remote attacker could possibly use this issue to cause a\ndenial of service. (CVE-2017-15705)\n\nIt was discovered that SpamAssassin incorrectly handled the PDFInfo plugin.\nA remote attacker could possibly use this issue to execute arbitrary code.\n(CVE-2018-11780)\n\nIt was discovered that SpamAssassin incorrectly handled meta rule syntax. A\nlocal attacker could possibly use this issue to execute arbitrary code.\n(CVE-2018-11781)\n","status":"published","published":"2018-11-06T16:17:44Z","modified":"2026-02-10T04:41:26Z","updated_at":"2026-11-02T16:58:14.019824Z"}]}}