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.
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Configurations

Configuration 1 (hide)

cpe:2.3:a:timeshift_project:timeshift:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*

Configuration 3 (hide)

cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*

Information

Published : 2020-03-05 08:15

Updated : 2022-01-01 11:36


NVD link : CVE-2020-10174

Mitre link : CVE-2020-10174


JSON object : View

CWE
CWE-59

Improper Link Resolution Before File Access ('Link Following')

CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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Products Affected

canonical

  • ubuntu_linux

timeshift_project

  • timeshift

fedoraproject

  • fedora