{"id":"CVE-2017-2625","details":"It was discovered that libXdmcp before 1.1.2 including used weak entropy to generate session keys. On a multi-user system using xdmcp, a local attacker could potentially use information available from the process list to brute force the key, allowing them to hijack other users' sessions.","modified":"2026-04-16T06:21:52.626034037Z","published":"2018-07-27T18:29:00.860Z","related":["SUSE-SU-2017:1862-1","SUSE-SU-2017:1868-1","SUSE-SU-2018:0338-1","openSUSE-SU-2024:10920-1"],"references":[{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2019/11/msg00024.html"},{"type":"ADVISORY","url":"https://cgit.freedesktop.org/xorg/lib/libXdmcp/commit/?id=0554324ec6bbc2071f5d1f8ad211a1643e29eb1f"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/201704-03"},{"type":"ADVISORY","url":"http://www.securityfocus.com/bid/96480"},{"type":"ADVISORY","url":"http://www.securitytracker.com/id/1037919"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2017:1865"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2625"},{"type":"EVIDENCE","url":"https://www.x41-dsec.de/lab/advisories/x41-2017-001-xorg/"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://gitlab.freedesktop.org/xorg/lib/libxdmcp","events":[{"introduced":"0"},{"fixed":"0c09444d276fbf46a0e8b427a4f6a325d0625742"},{"introduced":"0"},{"last_affected":"9f8e330eff571cc0c525fd42c4ef8a34cac2eb0d"},{"introduced":"0"},{"last_affected":"9f8e330eff571cc0c525fd42c4ef8a34cac2eb0d"},{"introduced":"0"},{"last_affected":"9f8e330eff571cc0c525fd42c4ef8a34cac2eb0d"},{"introduced":"0"},{"last_affected":"9f8e330eff571cc0c525fd42c4ef8a34cac2eb0d"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"1.1.2"},{"introduced":"0"},{"last_affected":"7.0"},{"introduced":"0"},{"last_affected":"7.0"},{"introduced":"0"},{"last_affected":"7.0"},{"introduced":"0"},{"last_affected":"7.0"}]}}],"versions":["MODULAR_COPY","PRE_xf86-4_3_0_1","XACE-SELINUX-MERGE","XORG-6_7_99_1","XORG-6_7_99_2","XORG-6_7_99_901","XORG-6_7_99_902","XORG-6_7_99_903","XORG-6_7_99_904","XORG-6_8_0","XORG-6_8_1","XORG-6_8_1_901","XORG-6_8_1_902","XORG-6_8_1_903","XORG-6_8_1_904","XORG-6_8_2","XORG-6_8_99_1","XORG-6_8_99_10","XORG-6_8_99_11","XORG-6_8_99_12","XORG-6_8_99_13","XORG-6_8_99_14","XORG-6_8_99_15","XORG-6_8_99_16","XORG-6_8_99_2","XORG-6_8_99_3","XORG-6_8_99_4","XORG-6_8_99_5","XORG-6_8_99_6","XORG-6_8_99_7","XORG-6_8_99_8","XORG-6_8_99_9","XORG-6_8_99_900","XORG-6_8_99_901","XORG-6_8_99_902","XORG-6_8_99_903","XORG-6_99_99_900","XORG-6_99_99_901","XORG-6_99_99_902","XORG-6_99_99_903","XORG-6_99_99_904","XORG-7_0","XORG-7_0_99_901","XORG-7_1","XORG-MAIN","lg3d-base","lg3d-rel-0-6-2","lg3d-rel-0-7-0","libXdmcp-1.0.2","libXdmcp-1.0.3","libXdmcp-1.1.0","libXdmcp-1.1.1","libXdmcp-1_0_1","rel-0-6-1","sco_port_update-base","xf86-012804-2330","xf86-4_3_0_1","xf86-4_3_99_16","xf86-4_3_99_901","xf86-4_3_99_902","xf86-4_3_99_903","xf86-4_3_99_903_special","xf86-4_4_0","xf86-4_4_99_1"],"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"7.4"}]},{"events":[{"introduced":"0"},{"last_affected":"7.4"}]},{"events":[{"introduced":"0"},{"last_affected":"7.5"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-2625.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"}]}