CVE-2020-10174

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.

• CWE-59
• CWE-362

• http://www.openwall.com/lists/oss-security/2020/03/06/3Mailing List, Third Party Advisory
• https://bugzilla.suse.com/show_bug.cgi?id=1165802Issue Tracking, Third Party Advisory
• https://github.com/teejee2008/timeshift/commit/335b3d5398079278b8f7094c77bfd148b315b462Patch, Third Party Advisory
• https://github.com/teejee2008/timeshift/releases/tag/v20.03Release Notes, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AAOFXT64CEUMJE3723JDJWTEQWQUCYMD/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SXDEPC52G46U6I7GLQNFLZXVSM7V2HYY/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TXXYQFSZ5P6ZMNFIDBAQKBFZIR2T7ZLL/
• https://usn.ubuntu.com/4312-1/Third Party Advisory
• http://www.openwall.com/lists/oss-security/2020/03/06/3Mailing List, Third Party Advisory
• https://bugzilla.suse.com/show_bug.cgi?id=1165802Issue Tracking, Third Party Advisory
• https://github.com/teejee2008/timeshift/commit/335b3d5398079278b8f7094c77bfd148b315b462Patch, Third Party Advisory
• https://github.com/teejee2008/timeshift/releases/tag/v20.03Release Notes, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AAOFXT64CEUMJE3723JDJWTEQWQUCYMD/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SXDEPC52G46U6I7GLQNFLZXVSM7V2HYY/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TXXYQFSZ5P6ZMNFIDBAQKBFZIR2T7ZLL/
• https://usn.ubuntu.com/4312-1/Third Party Advisory

Published

Mar 5, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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