{"id":"CVE-2019-13050","aliases":["ALSA-2020:4490","EUVD-2019-4610","GHSA-ch5h-mpfr-fhxh","RHSA-2020:4490","RLSA-2020:4490","SUSE-SU-2019:2006-1","SUSE-SU-2019:2480-1","UBUNTU-CVE-2019-13050","USN-5431-1","openSUSE-SU-2019:1917-1"],"status":"published","title":"Interaction between the sks-keyserver code through 1.2.0 of the SKS keyserver network, and GnuPG...","description":"Interaction between the sks-keyserver code through 1.2.0 of the SKS keyserver network, and GnuPG through 2.2.16, makes it risky to have a GnuPG keyserver configuration line referring to a host on the SKS keyserver network. Retrieving data from this network may cause a persistent denial of service, because of a Certificate Spamming Attack.","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":0.02445,"percentile":0.84454,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-295","CWE-297"],"published":"2019-06-29T16:07:13Z","modified":"2026-10-29T11:12:06Z","fixes":[{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15","package":"gpg2","fixed_in":["2.2.5-4.11.1"],"sources":["osv"]},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP1","package":"gpg2","fixed_in":["2.2.5-4.11.1"],"sources":["osv"]},{"ecosystem":"SUSE:Linux Enterprise Desktop 12 SP4","package":"gpg2","fixed_in":["2.0.24-9.8.1"],"sources":["osv"]},{"ecosystem":"SUSE:Linux Enterprise Server 12 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Advisory","report"]},{"url":"https://twitter.com/lambdafu/status/1147162583969009664","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CP4ON34YEXEZDZOXXWV43KVGGO6WZLJ5/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AUK2YRO6QIH64WP2LRA5D4LACTXQPPU4/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00039.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","Mailing List","Third Party Advisory"]},{"url":"https://support.f5.com/csp/article/K08654551","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory"]},{"url":"https://support.f5.com/csp/article/K08654551?utm_source=f5support\u0026amp%3Butm_medium=RSS","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-13050","tags":["advisory"]},{"url":"https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E"},{"url":"https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E"},{"url":"https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E"},{"url":"https://support.f5.com/csp/article/K08654551?utm_source=f5support\u0026amp;utm_medium=RSS"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CP4ON34YEXEZDZOXXWV43KVGGO6WZLJ5"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AUK2YRO6QIH64WP2LRA5D4LACTXQPPU4"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CP4ON34YEXEZDZOXXWV43KVGGO6WZLJ5"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AUK2YRO6QIH64WP2LRA5D4LACTXQPPU4"},{"url":"https://github.com/advisories/GHSA-ch5h-mpfr-fhxh"},{"url":"https://errata.almalinux.org/8/ALSA-2020-4490.html","tags":["advisory"]},{"url":"https://vulners.com/cve/CVE-2018-1000858","tags":["report"]},{"url":"https://vulners.com/cve/CVE-2019-13050","tags":["report"]},{"url":"https://access.redhat.com/errata/RHSA-2020:4490","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/8.3_release_notes/","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1726146","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2020/rhsa-2020_4490.json","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2018-1000858","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1663917","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-1000858","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-1000858","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2019-13050","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-13050","tags":["advisory","report"]},{"url":"https://access.redhat.com/articles/4264021","tags":["article"]},{"url":"https://errata.rockylinux.org/RLSA-2020:4490","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2019/suse-su-20192006-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1124847","tags":["report"]},{"url":"https://bugzilla.suse.com/1141093","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2019-13050","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2019/suse-su-20192480-1/","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2019-13050","tags":["report"]},{"url":"https://tech.michaelaltfield.net/2019/07/14/mitigating-poisoned-pgp-certificates/","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-5431-1","tags":["advisory"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/PVUTE3ZKQA26CXKVOP2QDOBQY6Y2QIBF/#PVUTE3ZKQA26CXKVOP2QDOBQY6Y2QIBF","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2019-13050","description":"Interaction between the sks-keyserver code through 1.2.0 of the SKS keyserver network, and GnuPG through 2.2.16, makes it risky to have a GnuPG keyserver configuration line referring to a host on the SKS keyserver network. Retrieving data from this network may cause a persistent denial of service, because of a Certificate Spamming Attack.","status":"published","published":"2019-06-29T16:07:13Z","modified":"2024-08-04T23:41:09.92Z","updated_at":"2026-11-02T14:20:24.357095Z"}],"euvd":[{"id":"EUVD-2019-4610","description":"Interaction between the sks-keyserver code through 1.2.0 of the SKS keyserver network, and GnuPG through 2.2.16, makes it risky to have a GnuPG keyserver configuration line referring to a host on the SKS keyserver network. Retrieving data from this network may cause a persistent denial of service, because of a Certificate Spamming Attack.","status":"published","published":"2019-06-29T16:07:13Z","modified":"2024-08-04T23:41:09Z","updated_at":"2026-11-03T02:40:44.337354Z"}],"ghsa":[{"id":"GHSA-ch5h-mpfr-fhxh","title":"Interaction between the sks-keyserver code through 1.2.0 of the SKS keyserver network, and GnuPG...","description":"Interaction between the sks-keyserver code through 1.2.0 of the SKS keyserver network, and GnuPG through 2.2.16, makes it risky to have a GnuPG keyserver configuration line referring to a host on the SKS keyserver network. Retrieving data from this network may cause a persistent denial of service, because of a Certificate Spamming Attack.","status":"published","published":"2022-05-24T16:49:03Z","modified":"2024-04-04T01:06:53Z","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-295","CWE-297"],"updated_at":"2026-11-02T14:55:55.605227Z"}],"nvd":[{"id":"CVE-2019-13050","description":"Interaction between the sks-keyserver code through 1.2.0 of the SKS keyserver network, and GnuPG through 2.2.16, makes it risky to have a GnuPG keyserver configuration line referring to a host on the SKS keyserver network. Retrieving data from this network may cause a persistent denial of service, because of a Certificate Spamming Attack.","status":"published","published":"2019-06-29T17:15:08.627Z","modified":"2026-06-17T02:15:58.607Z","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-295"],"updated_at":"2026-11-02T14:05:17.695191Z"}],"osv":[{"id":"RHSA-2020:4490","title":"Red Hat Security Advisory: gnupg2 security, bug fix, and enhancement update","status":"published","published":"2024-09-16T04:08:30Z","modified":"2026-01-14T11:02:55.650898Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:07.57369Z"},{"id":"RLSA-2020:4490","title":"Moderate: gnupg2 security, bug fix, and enhancement update","description":"The GNU Privacy Guard (GnuPG or GPG) is a tool for encrypting data and creating digital signatures, compliant with OpenPGP and S/MIME standards.\n\nThe following packages have been upgraded to a later upstream version: gnupg2 (2.2.20). (BZ#1663944)\n\nSecurity Fix(es):\n\n* GnuPG: interaction between the sks-keyserver code and GnuPG allows for a Certificate Spamming Attack which leads to persistent DoS (CVE-2019-13050)\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 Rocky Linux 8.3 Release Notes linked from the References section.","status":"published","published":"2020-11-03T12:09:29Z","modified":"2026-02-05T06:45:13.51054Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:23.969672Z"},{"id":"UBUNTU-CVE-2019-13050","description":"Interaction between the sks-keyserver code through 1.2.0 of the SKS keyserver network, and GnuPG through 2.2.16, makes it risky to have a GnuPG keyserver configuration line referring to a host on the SKS keyserver network. Retrieving data from this network may cause a persistent denial of service, because of a Certificate Spamming Attack.","status":"published","published":"2019-06-29T17:15:00Z","modified":"2026-02-04T04:36:21.077401Z","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":"2026-11-02T15:54:19.202697Z"},{"id":"ALSA-2020:4490","title":"Moderate: gnupg2 security, bug fix, and enhancement update","description":"The GNU Privacy Guard (GnuPG or GPG) is a tool for encrypting data and creating digital signatures, compliant with OpenPGP and S/MIME standards.\n\nThe following packages have been upgraded to a later upstream version: gnupg2 (2.2.20). (BZ#1663944)\n\nSecurity Fix(es):\n\n* GnuPG: interaction between the sks-keyserver code and GnuPG allows for a Certificate Spamming Attack which leads to persistent DoS (CVE-2019-13050)\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":"2020-11-03T12:09:29Z","modified":"2026-10-29T11:12:06.24881808Z","updated_at":"2026-11-02T15:27:51.196609Z"},{"id":"openSUSE-SU-2019:1917-1","title":"Security update for gpg2","description":"This update for gpg2 fixes the following issues:\n\nSecurity issue fixed:\n\n- CVE-2019-13050: Fixed a denial of service attacks via big keys (bsc#1141093).\n\nNon-security issue fixed:\n\n- Allow coredumps in X11 desktop sessions (bsc#1124847)\n\nThis update was imported from the SUSE:SLE-15:Update update project.","status":"published","published":"2019-08-15T09:51:27Z","modified":"2025-05-07T18:10:33.869308Z","updated_at":"2026-11-02T16:58:30.784344Z"},{"id":"SUSE-SU-2019:2006-1","title":"Security update for gpg2","description":"This update for gpg2 fixes the following issues:\n\nSecurity issue fixed:\n\n- CVE-2019-13050: Fixed a denial of service attacks via big keys (bsc#1141093).\n\nNon-security issue fixed:\n\n- Allow coredumps in X11 desktop sessions (bsc#1124847)\n","status":"published","published":"2019-07-29T11:02:53Z","modified":"2026-02-04T03:17:13.593006Z","updated_at":"2026-11-02T15:53:46.44301Z"},{"id":"SUSE-SU-2019:2480-1","title":"Security update for gpg2","description":"This update for gpg2 fixes the following issues:\n\nSecurity issue fixed:\n\n- CVE-2019-13050: Fixed denial-of-service attacks via big keys. (bsc#1141093)\n\nNon-security issue fixed:\n\n- Allow coredumps in X11 desktop sessions (bsc#1124847).\n","status":"published","published":"2019-09-27T11:12:12Z","modified":"2026-02-04T04:01:42.102207Z","updated_at":"2026-11-02T15:53:46.44301Z"},{"id":"USN-5431-1","title":"gnupg2 vulnerability","description":"It was discovered that GnuPG was not properly processing keys\nwith large amounts of signatures. An attacker could possibly\nuse this issue to cause a denial of service.\n","status":"published","published":"2022-05-30T08:24:09Z","modified":"2026-04-27T19:18:42.284473Z","updated_at":"2026-11-02T16:58:16.20937Z"}]}}