{"id":"CVE-2020-10174","aliases":["DEBIAN-CVE-2020-10174","EUVD-2020-2637","GHSA-mw9g-hwpr-h3rv"],"status":"published","title":"init_tmp in TeeJee.FileSystem.vala in Timeshift before 20.03 unsafely reuses a preexisting...","description":"init_tmp in TeeJee.FileSystem.vala in Timeshift before 20.03 unsafely reuses a preexisting temporary directory in the predictable location /tmp/timeshift. It follows symlinks in this location or uses directories owned by unprivileged users. Because Timeshift also executes scripts under this location, an attacker can attempt to win a race condition to replace scripts created by Timeshift with attacker-controlled scripts. Upon success, an attacker-controlled script is executed with full root privileges. This logic is practically always triggered when Timeshift runs regardless of the command-line arguments used.","severity":{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.0028,"percentile":0.20633,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-362","CWE-59"],"published":"2020-03-05T15:28:55Z","modified":"2026-10-26T12:00:06Z","fixes":[{"ecosystem":"Debian:12","package":"timeshift","fixed_in":["20.03+ds-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"timeshift","fixed_in":["20.03+ds-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"timeshift","fixed_in":["20.03+ds-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"timeshift","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20.03+ds-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"timeshift","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20.03+ds-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"timeshift","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20.03+ds-1"}]}]}],"products":[{"vendor":"canonical","product":"ubuntu_linux"},{"vendor":"fedoraproject","product":"fedora"},{"vendor":"timeshift_project","product":"timeshift"}],"references":[{"url":"https://bugzilla.suse.com/show_bug.cgi?id=1165802","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Third Party Advisory","report"]},{"url":"https://github.com/teejee2008/timeshift/commit/335b3d5398079278b8f7094c77bfd148b315b462","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://github.com/teejee2008/timeshift/releases/tag/v20.03","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2020/03/06/3","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TXXYQFSZ5P6ZMNFIDBAQKBFZIR2T7ZLL/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SXDEPC52G46U6I7GLQNFLZXVSM7V2HYY/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AAOFXT64CEUMJE3723JDJWTEQWQUCYMD/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://usn.ubuntu.com/4312-1/","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-10174"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AAOFXT64CEUMJE3723JDJWTEQWQUCYMD/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SXDEPC52G46U6I7GLQNFLZXVSM7V2HYY/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TXXYQFSZ5P6ZMNFIDBAQKBFZIR2T7ZLL/"},{"url":"https://github.com/advisories/GHSA-mw9g-hwpr-h3rv"},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-10174","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2020-10174","description":"init_tmp in TeeJee.FileSystem.vala in Timeshift before 20.03 unsafely reuses a preexisting temporary directory in the predictable location /tmp/timeshift. It follows symlinks in this location or uses directories owned by unprivileged users. Because Timeshift also executes scripts under this location, an attacker can attempt to win a race condition to replace scripts created by Timeshift with attacker-controlled scripts. Upon success, an attacker-controlled script is executed with full root privileges. This logic is practically always triggered when Timeshift runs regardless of the command-line arguments used.","status":"published","published":"2020-03-05T15:28:55Z","modified":"2024-08-04T10:50:57.827Z","updated_at":"2026-11-02T14:35:48.213211Z"}],"euvd":[{"id":"EUVD-2020-2637","description":"init_tmp in TeeJee.FileSystem.vala in Timeshift before 20.03 unsafely reuses a preexisting temporary directory in the predictable location /tmp/timeshift. It follows symlinks in this location or uses directories owned by unprivileged users. Because Timeshift also executes scripts under this location, an attacker can attempt to win a race condition to replace scripts created by Timeshift with attacker-controlled scripts. Upon success, an attacker-controlled script is executed with full root privileges. This logic is practically always triggered when Timeshift runs regardless of the command-line arguments used.","status":"published","published":"2020-03-05T15:28:55Z","modified":"2024-08-04T10:50:57Z","updated_at":"2026-11-03T03:07:51.449946Z"}],"ghsa":[{"id":"GHSA-mw9g-hwpr-h3rv","title":"init_tmp in TeeJee.FileSystem.vala in Timeshift before 20.03 unsafely reuses a preexisting...","description":"init_tmp in TeeJee.FileSystem.vala in Timeshift before 20.03 unsafely reuses a preexisting temporary directory in the predictable location /tmp/timeshift. It follows symlinks in this location or uses directories owned by unprivileged users. Because Timeshift also executes scripts under this location, an attacker can attempt to win a race condition to replace scripts created by Timeshift with attacker-controlled scripts. Upon success, an attacker-controlled script is executed with full root privileges. This logic is practically always triggered when Timeshift runs regardless of the command-line arguments used.","status":"published","published":"2022-05-24T17:10:17Z","modified":"2023-01-29T05:01:45Z","cwes":["CWE-362"],"updated_at":"2026-11-02T14:44:54.429174Z"}],"nvd":[{"id":"CVE-2020-10174","description":"init_tmp in TeeJee.FileSystem.vala in Timeshift before 20.03 unsafely reuses a preexisting temporary directory in the predictable location /tmp/timeshift. It follows symlinks in this location or uses directories owned by unprivileged users. Because Timeshift also executes scripts under this location, an attacker can attempt to win a race condition to replace scripts created by Timeshift with attacker-controlled scripts. Upon success, an attacker-controlled script is executed with full root privileges. This logic is practically always triggered when Timeshift runs regardless of the command-line arguments used.","status":"published","published":"2020-03-05T16:15:11.94Z","modified":"2026-06-17T02:47:26.7Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.9,"vector":"AV:L/AC:M/Au:N/C:C/I:C/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-59","CWE-362"],"updated_at":"2026-11-02T14:05:54.796125Z"}],"osv":[{"id":"CVE-2020-10174","description":"init_tmp in TeeJee.FileSystem.vala in Timeshift before 20.03 unsafely reuses a preexisting temporary directory in the predictable location /tmp/timeshift. It follows symlinks in this location or uses directories owned by unprivileged users. Because Timeshift also executes scripts under this location, an attacker can attempt to win a race condition to replace scripts created by Timeshift with attacker-controlled scripts. Upon success, an attacker-controlled script is executed with full root privileges. This logic is practically always triggered when Timeshift runs regardless of the command-line arguments used.","status":"published","published":"2020-03-05T16:15:11.94Z","modified":"2026-10-20T10:51:34.584868103Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:13.492058Z"},{"id":"DEBIAN-CVE-2020-10174","description":"init_tmp in TeeJee.FileSystem.vala in Timeshift before 20.03 unsafely reuses a preexisting temporary directory in the predictable location /tmp/timeshift. It follows symlinks in this location or uses directories owned by unprivileged users. Because Timeshift also executes scripts under this location, an attacker can attempt to win a race condition to replace scripts created by Timeshift with attacker-controlled scripts. Upon success, an attacker-controlled script is executed with full root privileges. This logic is practically always triggered when Timeshift runs regardless of the command-line arguments used.","status":"published","published":"2020-03-05T16:15:11.94Z","modified":"2026-10-26T12:00:06.991668906Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:32.862554Z"}]}}