CVE-2020-8833: fallo de gravedad media en Canonical Apport
Apport race condition in crash report permissions
Publicada el · Actualizada el
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 5.6epss 0.3%
probabilidad de explotación
0.3%top 74% de las CVE
explotación observada
noninguna fuente lo reporta
Time-of-check Time-of-use Race Condition vulnerability on crash report ownership change in Apport allows for a possible privilege escalation opportunity. If fs.protected_symlinks is disabled, this can be exploited between the os.open and os.chown calls when the Apport cron script clears out crash files of size 0. A symlink with the same name as the deleted file can then be created upon which chown will be called, changing the file owner to root. Fixed in versions 2.20.1-0ubuntu2.23, 2.20.9-0ubuntu7.14, 2.20.11-0ubuntu8.8 and 2.20.11-0ubuntu22.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
Productos afectados
Canonical · ApportCVEs relacionadas — Canonical Apport
En el mismo producto, de las más peligrosas a las menos.
CVE-2025-5054MEDIUMRace Condition in Canonical ApportEPSS 0.8%CVE-2020-8831MEDIUMWorld writable root owned lock file created in user controllable locationEPSS 0.7%CVE-2019-15790LOWApport reads PID files with elevated privilegesEPSS 0.5%CVE-2026-77113MEDIUMPath Traversal Vulnerability in apport-unpackEPSS 0.2%