CVE-2020-8833: falha de média gravidade em Canonical Apport
Apport race condition in crash report permissions
Publicada em · Atualizada em
13Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 5.6epss 0.3%
probabilidade de exploração
0.3%top 74% das CVEs
exploração observada
nãonenhuma fonte 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
Produtos afetados
Canonical · ApportCVEs relacionadas — Canonical Apport
No mesmo produto, das mais perigosas para as menos.
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