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.
References
Link | Resource |
---|---|
http://www.openwall.com/lists/oss-security/2020/03/06/3 | Mailing List Third Party Advisory |
https://bugzilla.suse.com/show_bug.cgi?id=1165802 | Issue Tracking Third Party Advisory |
https://github.com/teejee2008/timeshift/commit/335b3d5398079278b8f7094c77bfd148b315b462 | Patch Third Party Advisory |
https://github.com/teejee2008/timeshift/releases/tag/v20.03 | Release 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 |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2020-03-05T15:28:55
Updated: 2020-04-01T21:06:04
Reserved: 2020-03-05T00:00:00
Link: CVE-2020-10174
JSON object: View
NVD Information
Status : Modified
Published: 2020-03-05T16:15:11.940
Modified: 2023-11-07T03:14:07.173
Link: CVE-2020-10174
JSON object: View
Redhat Information
No data.