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.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: mitre
Published: 2020-03-05T15:28:55
Updated: 2024-08-04T10:50:57.827Z
Reserved: 2020-03-05T00:00:00
Link: CVE-2020-10174
Vulnrichment
No data.
NVD
Status : Modified
Published: 2020-03-05T16:15:11.940
Modified: 2024-11-21T04:54:54.730
Link: CVE-2020-10174
Redhat
No data.