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CVE-2020-10174

Estado: ModificadaAlta (7)—

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.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (3)

Canonical — Ubuntu LinuxFedoraproject — FedoraTimeshift Project — Timeshift

CWE

Referencias

JSON original (NVD)

Mostrar
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          "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
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          "value": "CWE-362"
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      "value": "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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      "value": "init_tmp en TeeJee.FileSystem.vala en Timeshift versiones anteriores a 20.03, reutiliza de forma no segura un directorio temporal preexistente en la ubicación predecible /tmp/timeshift. Sigue los enlaces simbólicos en esta ubicación o usa directorios propiedad de los usuarios sin privilegios. Debido a que Timeshift también ejecuta scripts bajo esta ubicación, un atacante puede intentar ganar una condición de carrera para sustituir los scripts creados mediante Timeshift con scripts controlados por el atacante. Tras el éxito, un script controlado por el atacante es ejecutado con todos los privilegios root. Esta lógica es siempre activada prácticamente cuando Timeshift se ejecuta independientemente de los argumentos de línea de comando utilizados."
    }
  ],
  "lastModified": "2026-06-17T02:47:26.700",
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