{"id":"CVE-2020-25275","aliases":["ALPINE-CVE-2020-25275","ALSA-2021:1887","CLSA-2021-1634573745","CLSA-2021-1634922570","DEBIAN-CVE-2020-25275","DLA-2517-1","DSA-4825-1","EUVD-2020-17963","GHSA-jv8c-8hrc-9f7m","MGASA-2021-0008","OESA-2021-1042","RHSA-2021:1887","SUSE-SU-2021:0027-1","SUSE-SU-2021:0028-1","SUSE-SU-2021:0029-1","UBUNTU-CVE-2020-25275","USN-4674-1","USN-4674-2","openSUSE-SU-2021:0026-1","openSUSE-SU-2021:0072-1"],"status":"published","title":"Dovecot before 2.3.13 has Improper Input Validation in lda, lmtp, and imap, leading to an...","description":"Dovecot before 2.3.13 has Improper Input Validation in lda, lmtp, and imap, leading to an application crash via a crafted email message with certain choices for ten thousand MIME 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Advisory","advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GXDKFLOCUP7I4ELGQ2F4P5TGC6NXMYV7/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-25275","tags":["advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GXDKFLOCUP7I4ELGQ2F4P5TGC6NXMYV7/"},{"url":"https://github.com/advisories/GHSA-jv8c-8hrc-9f7m"},{"url":"https://security.alpinelinux.org/vuln/CVE-2020-25275","tags":["advisory"]},{"url":"https://vulners.com/cve/CVE-2020-24386","tags":["report"]},{"url":"https://vulners.com/cve/CVE-2020-25275","tags":["report"]},{"url":"https://errata.cloudlinux.com/els6/CLSA-2021-1634573745.html","tags":["advisory"]},{"url":"https://errata.cloudlinux.com/ol6/CLSA-2021-1634922570.html","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-25275","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2021-0008.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=28012","tags":["report"]},{"url":"https://dovecot.org/pipermail/dovecot-news/2021-January/000450.html","tags":["web"]},{"url":"https://dovecot.org/pipermail/dovecot-news/2021-January/000448.html","tags":["web","article"]},{"url":"https://ubuntu.com/security/notices/USN-4674-1","tags":["advisory"]},{"url":"https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1042","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-24386","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2021:1887","tags":["advisory"]},{"url":"https://access.redhat.com/security/updates/classification/#moderate","tags":["article"]},{"url":"https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.4_release_notes/","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1805947","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1888111","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1894418","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1912455","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1912460","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_1887.json","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2020-24386","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-24386","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2020-25275","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-25275","tags":["advisory","report"]},{"url":"https://www.suse.com/support/update/announcement/2021/suse-su-20210027-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1174920","tags":["report"]},{"url":"https://bugzilla.suse.com/1180405","tags":["report"]},{"url":"https://bugzilla.suse.com/1180406","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2020-12100","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-24386","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-25275","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2021/suse-su-20210028-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1174922","tags":["report"]},{"url":"https://bugzilla.suse.com/1174923","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2020-12673","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-12674","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2021/suse-su-20210029-1/","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-25275","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-4674-2","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-24386","tags":["report"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/GLBPVUTTVOKCDH7OSMVSVIQEI7TKHOMX/","tags":["advisory"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/DUR6FYAW4F7DJJAFNZ7FNLNEQNDU6ZEZ/","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2020-25275","description":"Dovecot before 2.3.13 has Improper Input Validation in lda, lmtp, and imap, leading to an application crash via a crafted email message with certain choices for ten thousand MIME parts.","status":"published","published":"2021-01-04T16:19:08Z","modified":"2024-08-04T15:33:05.386Z","updated_at":"2026-11-02T14:35:48.854892Z"}],"euvd":[{"id":"EUVD-2020-17963","description":"Dovecot before 2.3.13 has Improper Input Validation in lda, lmtp, and imap, leading to an application crash via a crafted email message with certain choices for ten thousand MIME parts.","status":"published","published":"2021-01-04T16:19:08Z","modified":"2024-08-04T15:33:05Z","updated_at":"2026-11-03T03:07:17.764085Z"}],"ghsa":[{"id":"GHSA-jv8c-8hrc-9f7m","title":"Dovecot before 2.3.13 has Improper Input Validation in lda, lmtp, and imap, leading to an...","description":"Dovecot before 2.3.13 has Improper Input Validation in lda, lmtp, and imap, leading to an application crash via a crafted email message with certain choices for ten thousand MIME parts.","status":"published","published":"2022-05-24T17:37:53Z","modified":"2023-01-31T05:02:20Z","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-20"],"updated_at":"2026-11-02T14:48:14.417535Z"}],"nvd":[{"id":"CVE-2020-25275","description":"Dovecot before 2.3.13 has Improper Input Validation in lda, lmtp, and imap, leading to an application crash via a crafted email message with certain choices for ten thousand MIME parts.","status":"published","published":"2021-01-04T17:15:13.93Z","modified":"2026-06-17T03:06:42.523Z","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-20"],"updated_at":"2026-11-02T14:06:28.340168Z"}],"osv":[{"id":"ALPINE-CVE-2020-25275","description":"Dovecot before 2.3.13 has Improper Input Validation in lda, lmtp, and imap, leading to an application crash via a crafted email message with certain choices for ten thousand MIME parts.","status":"published","published":"2021-01-04T17:15:13.93Z","modified":"2026-10-26T11:17:55.152053818Z","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"}],"updated_at":"2026-11-02T15:27:48.11886Z"},{"id":"CVE-2020-25275","description":"Dovecot before 2.3.13 has Improper Input Validation in lda, lmtp, and imap, leading to an application crash via a crafted email message with certain choices for ten thousand MIME parts.","status":"published","published":"2021-01-04T17:15:13.93Z","modified":"2026-10-24T14:19:44.135926706Z","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"}],"updated_at":"2026-11-02T15:44:15.879068Z"},{"id":"DEBIAN-CVE-2020-25275","description":"Dovecot before 2.3.13 has Improper Input Validation in lda, lmtp, and imap, leading to an application crash via a crafted email message with certain choices for ten thousand MIME parts.","status":"published","published":"2021-01-04T17:15:13.93Z","modified":"2026-10-26T12:02:30.599156694Z","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"}],"updated_at":"2026-11-02T15:45:33.729655Z"},{"id":"OESA-2021-1042","title":"dovecot security update","description":"\r\n\r\nSecurity Fix(es):\r\n\r\nDovecot before 2.3.13 has Improper Input Validation in lda, lmtp, and imap, leading to an application crash via a crafted email message with certain choices for ten thousand MIME parts.(CVE-2020-25275)\r\n\r\nAn issue was discovered in Dovecot before 2.3.13. By using IMAP IDLE, an authenticated attacker can trigger unhibernation via attacker-controlled parameters, leading to access to other users' email messages (and path disclosure).(CVE-2020-24386)","status":"published","published":"2021-03-05T11:04:16Z","modified":"2026-08-18T01:15:08.853486964Z","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"}],"updated_at":"2026-11-02T15:52:38.987987Z"},{"id":"RHSA-2021:1887","title":"Red Hat Security Advisory: dovecot security and bug fix update","status":"published","published":"2024-09-16T05:12:50Z","modified":"2026-06-26T12:22:28.163821113Z","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"}],"updated_at":"2026-11-02T15:53:08.071325Z"},{"id":"UBUNTU-CVE-2020-25275","description":"Dovecot before 2.3.13 has Improper Input Validation in lda, lmtp, and imap, leading to an application crash via a crafted email message with certain choices for ten thousand MIME parts.","status":"published","published":"2021-01-04T12:00:00Z","modified":"2026-04-22T12:34:45.813076Z","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"}],"updated_at":"2026-11-02T15:54:23.905183Z"},{"id":"ALSA-2021:1887","title":"Moderate: dovecot security and bug fix update","description":"Dovecot is an IMAP server for Linux and other UNIX-like systems, written primarily with security in mind. It also contains a small POP3 server, and supports e-mail in either the maildir or mbox format. The SQL drivers and authentication plug-ins are provided as subpackages. \n\nSecurity Fix(es):\n\n* dovecot: IMAP hibernation function allows mail access (CVE-2020-24386)\n\n* dovecot: Denial of service via mail MIME parsing (CVE-2020-25275)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.","status":"published","published":"2021-05-18T06:19:41Z","modified":"2026-10-29T11:01:21.586872431Z","updated_at":"2026-11-02T15:27:51.196609Z"},{"id":"CLSA-2021-1634573745","title":"Fix of CVE: CVE-2020-25275, CVE-2020-12100","description":"- CVE-2020-12100: Resource exhaustion via deeply nested MIME parts\n- CVE-2020-25275: Denial of service via mail MIME parsing","status":"published","published":"2021-10-18T16:15:45Z","modified":"2026-10-21T10:47:41.667640234Z","updated_at":"2026-11-02T15:43:39.801198Z"},{"id":"CLSA-2021-1634922570","title":"Fixed CVEs in dovecot: CVE-2020-25275, CVE-2020-12100","description":"- CVE-2020-12100: Resource exhaustion via deeply nested MIME parts\n- CVE-2020-25275: Denial of service via mail MIME parsing","status":"published","published":"2021-10-22T17:09:30Z","modified":"2026-10-21T10:46:44.706697871Z","updated_at":"2026-11-02T15:43:39.801198Z"},{"id":"DLA-2517-1","title":"dovecot - security update","status":"published","published":"2021-01-05T00:00:00Z","modified":"2026-03-09T01:21:10.763119Z","updated_at":"2026-11-02T15:46:10.712745Z"},{"id":"DSA-4825-1","title":"dovecot - security update","status":"published","published":"2021-01-04T00:00:00Z","modified":"2026-03-09T02:11:02.958235Z","updated_at":"2026-11-02T15:46:17.19998Z"},{"id":"MGASA-2021-0008","title":"Updated dovecot packages fix security vulnerabilities","description":"It was discovered that Dovecot incorrectly handled certain imap hibernation\ncommands. A remote authenticated attacker could possibly use this issue to\naccess other users’ email (CVE-2020-24386).\n\nInnokentii Sennovskiy discovered that Dovecot incorrectly handled MIME\nparsing. A remote attacker could possibly use this issue to cause Dovecot\nto crash, resulting in a denial of service (CVE-2020-25275).\n\nThe dovecot package has been updated to version 2.3.13, fixing these issues\nand other bugs. See the upstream release announcement for details.\n","status":"published","published":"2021-01-08T13:59:29Z","modified":"2026-04-16T04:40:37.446838299Z","updated_at":"2026-11-02T15:49:41.509337Z"},{"id":"openSUSE-SU-2021:0026-1","title":"Security update for dovecot23","description":"This update for dovecot23 fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2020-12100: Fixed a resource exhaustion caused by deeply nested MIME parts (bsc#1174920).\n- CVE-2020-24386: Fixed an issue with IMAP hibernation that allowed users to access other users' emails (bsc#1180405).\n- CVE-2020-25275: Fixed a crash when the 10000th MIME part was message/rfc822 (bsc#1180406).\n\nNon-security issues fixed:\n\n- Pigeonhole was updated to version 0.5.11.\n- Dovecot was updated to version 2.3.11.3.\n\nThis update was imported from the SUSE:SLE-15-SP1:Update update project.","status":"published","published":"2021-01-07T15:52:33Z","modified":"2026-02-04T02:15:34.355449Z","updated_at":"2026-11-02T16:58:31.879684Z"},{"id":"openSUSE-SU-2021:0072-1","title":"Security update for dovecot23","description":"This update for dovecot23 fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2020-12100: Fixed a resource exhaustion caused by deeply nested MIME parts (bsc#1174920).\n- CVE-2020-24386: Fixed an issue with IMAP hibernation that allowed users to access other users' emails (bsc#1180405).\n- CVE-2020-25275: Fixed a crash when the 10000th MIME part was message/rfc822 (bsc#1180406).\n\nNon-security issues fixed:\n\n- Pigeonhole was updated to version 0.5.11.\n- Dovecot was updated to version 2.3.11.3.\n\nThis update was imported from the SUSE:SLE-15-SP1:Update update project.","status":"published","published":"2021-01-16T10:05:36Z","modified":"2025-05-07T18:11:21.104351Z","updated_at":"2026-11-02T16:58:31.879684Z"},{"id":"SUSE-SU-2021:0027-1","title":"Security update for dovecot23","description":"This update for dovecot23 fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2020-12100: Fixed a resource exhaustion caused by deeply nested MIME parts (bsc#1174920).\n- CVE-2020-24386: Fixed an issue with IMAP hibernation that allowed users to access other users' emails (bsc#1180405).\n- CVE-2020-25275: Fixed a crash when the 10000th MIME part was message/rfc822 (bsc#1180406).\n\nNon-security issues fixed:\n\n- Pigeonhole was updated to version 0.5.11.\n- Dovecot was updated to version 2.3.11.3.\n","status":"published","published":"2021-01-05T14:57:36Z","modified":"2026-02-04T03:51:55.132727Z","updated_at":"2026-11-02T15:53:48.690034Z"},{"id":"SUSE-SU-2021:0028-1","title":"Security update for dovecot23","description":"This update for dovecot23 fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2020-12100: Fixed a resource exhaustion caused by deeply nested MIME parts (bsc#1174920).\n- CVE-2020-12673: Fixed an improper implementation of NTLM that did not check the message buffer size (bsc#1174922).\n- CVE-2020-12674: Fixed an improper implementation of the RPA mechanism (bsc#1174923).\n- CVE-2020-24386: Fixed an issue with IMAP hibernation that allowed users to access other users' emails (bsc#1180405).\n- CVE-2020-25275: Fixed a crash when the 10000th MIME part was message/rfc822 (bsc#1180406).\n\nNon-security issues fixed:\n\n- Pigeonhole was updated to version 0.5.11.\n- Dovecot was updated to version 2.3.11.3.\n","status":"published","published":"2021-01-05T14:57:48Z","modified":"2026-02-04T03:42:29.96382Z","updated_at":"2026-11-02T15:53:48.690034Z"},{"id":"SUSE-SU-2021:0029-1","title":"Security update for dovecot23","description":"This update for dovecot23 fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2020-12100: Fixed a resource exhaustion caused by deeply nested MIME parts (bsc#1174920).\n- CVE-2020-24386: Fixed an issue with IMAP hibernation that allowed users to access other users' emails (bsc#1180405).\n- CVE-2020-25275: Fixed a crash when the 10000th MIME part was message/rfc822 (bsc#1180406).\n\nNon-security issues fixed:\n\n- Pigeonhole was updated to version 0.5.11.\n- Dovecot was updated to version 2.3.11.3.\n","status":"published","published":"2021-01-05T14:58:15Z","modified":"2026-02-04T02:37:15.356621Z","updated_at":"2026-11-02T15:53:48.690034Z"},{"id":"USN-4674-1","title":"dovecot vulnerabilities","description":"It was discovered that Dovecot incorrectly handled certain imap hibernation\ncommands. A remote authenticated attacker could possibly use this issue to\naccess other users' email. This issue only affected Ubuntu 18.04 LTS,\nUbuntu 20.04 LTS, and Ubuntu 20.10. (CVE-2020-24386)\n\nInnokentii Sennovskiy discovered that Dovecot incorrectly handled MIME\nparsing. A remote attacker could possibly use this issue to cause Dovecot\nto crash, resulting in a denial of service. (CVE-2020-25275)\n","status":"published","published":"2021-01-04T14:04:39Z","modified":"2026-04-22T10:10:11.712051Z","updated_at":"2026-11-02T16:58:15.159055Z"},{"id":"USN-4674-2","title":"dovecot vulnerability","description":"USN-4674-1 fixed a vulnerability in Dovecot. This update provides\nthe corresponding update for Ubuntu 14.04 ESM.\n\nOriginal advisory details:\n\n Innokentii Sennovskiy discovered that Dovecot incorrectly handled MIME\n parsing. A remote attacker could possibly use this issue to cause Dovecot\n to crash, resulting in a denial of service. (CVE-2020-25275)\n","status":"published","published":"2021-01-04T17:51:52Z","modified":"2026-04-22T10:10:22.117145Z","updated_at":"2026-11-02T16:58:15.159055Z"}]}}