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Vulnerability · Published Mar 5, 2020 · Assigned by mitre

CVE-2020-10174

High 7.0

In plain English

A high-severity security flaw in the timeshift package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.0High
Exploit odds (30 days)0.3%top 79.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12timeshift20.03+ds-1DEBIAN-CVE-2020-10174
Debian:13timeshift20.03+ds-1DEBIAN-CVE-2020-10174
Debian:14timeshift20.03+ds-1DEBIAN-CVE-2020-10174

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References