CVE-2021-44731: fallo de gravedad alta en Canonical Ltd. snapd
snapd could be made to escalate privileges and run programs as administrator
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
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
Productos afectados
Canonical Ltd. · snapdCVEs relacionadas — Canonical Ltd. snapd
En el mismo producto, de las más peligrosas a las menos.
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%
Referencias
http://packetstormsecurity.com/files/170176/snap-confine-must_mkdir_and_open_with_perms-Race-Condition.htmlhttp://seclists.org/fulldisclosure/2022/Dec/4https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3QTBN7LLZISXIA4KU4UKDR27Q5PXDS2U/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCGHG6LJAVJJ72TMART6A7N4Z6MSTGI7/https://ubuntu.com/security/notices/USN-5292-1https://www.debian.org/security/2022/dsa-5080http://www.openwall.com/lists/oss-security/2022/02/18/2http://www.openwall.com/lists/oss-security/2022/02/23/1http://www.openwall.com/lists/oss-security/2022/02/23/2http://www.openwall.com/lists/oss-security/2022/11/30/2