{"id":"USN-6076-1","summary":"matrix-synapse vulnerabilities","details":"It was discovered that Synapse incorrectly handled certain inputs. If a\nuser or an automated system were tricked into opening a specially crafted\ninput file, a remote attacker could possibly use this issue to cause a\ndenial of service. (CVE-2019-18835, CVE-2018-12291, CVE-2018-10657)\n\nIt was discovered that Synapse incorrectly handled certain inputs. If a\nuser or an automated system were tricked into opening a specially crafted\ninput file, a remote attacker could possibly use this issue to hijack the\nsession. (CVE-2019-11842, CVE-2018-12423)\n\nIt was discovered that Synapse incorrectly handled certain inputs. If a\nuser or an automated system were tricked into opening a specially crafted\ninput file, a remote attacker could possibly use this issue to perform \nspoofing or user impersonation. (CVE-2019-5885, CVE-2018-16515)\n","modified":"2026-02-10T04:43:07Z","published":"2023-05-16T07:45:08Z","related":["UBUNTU-CVE-2018-10657","UBUNTU-CVE-2018-12291","UBUNTU-CVE-2018-12423","UBUNTU-CVE-2018-16515","UBUNTU-CVE-2019-11842","UBUNTU-CVE-2019-18835","UBUNTU-CVE-2019-5885"],"upstream":["CVE-2018-10657","CVE-2018-12291","CVE-2018-12423","CVE-2018-16515","CVE-2019-11842","CVE-2019-18835","CVE-2019-5885","UBUNTU-CVE-2018-10657","UBUNTU-CVE-2018-12291","UBUNTU-CVE-2018-12423","UBUNTU-CVE-2018-16515","UBUNTU-CVE-2019-11842","UBUNTU-CVE-2019-18835","UBUNTU-CVE-2019-5885"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6076-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-10657"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-12291"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-12423"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-16515"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-5885"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-11842"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-18835"}],"affected":[{"package":{"name":"matrix-synapse","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/matrix-synapse@0.24.0+dfsg-1ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.24.0+dfsg-1ubuntu0.1~esm1"}]}],"versions":["0.19.2+dfsg-6","0.24.0+dfsg-1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.24.0+dfsg-1ubuntu0.1~esm1","binary_name":"matrix-synapse"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6076-1.json","cves_map":{"ecosystem":"Ubuntu:Pro:18.04:LTS","cves":[{"id":"CVE-2018-10657","severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2018-12291","severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2018-12423","severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}]},{"id":"CVE-2018-16515","severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2019-5885","severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2019-11842","severity":[{"score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2019-18835","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}]}}}],"schema_version":"1.7.3"}