CVE-2021-44731highCWE-362

CVE-2021-44731: high-severity vulnerability in Canonical Ltd. snapd

snapd could be made to escalate privileges and run programs as administrator

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.8epss 1.0%
A race condition existed in the snapd 2.54.2 snap-confine binary when preparing a private mount namespace for a snap. This could allow a local attacker to gain root privileges by bind-mounting their own contents inside the snap's private mount namespace and causing snap-confine to execute arbitrary code and hence gain privilege escalation. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected products
Canonical Ltd. · snapd
Related CVEs — Canonical Ltd. snapd

In the same product, most dangerous first.

CVE-2023-1523CRITICALCVE-2023-1523EPSS 1.4%CVE-2024-5138HIGHCVE-2024-5138EPSS 0.8%CVE-2021-4120HIGHsnapd could be made to bypass intended access restrictions through snap content interfaces and layout pathsEPSS 0.4%CVE-2022-3328HIGHCVE-2022-3328EPSS 0.4%CVE-2021-44730HIGHsnapd could be made to escalate privileges and run programs as administratorEPSS 0.4%CVE-2021-3155LOWsnapd created ~/snap with too-wide permissionsEPSS 0.3%