CVE-2021-44731

描述

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

如何修補 CVE-2021-44731

要修補 CVE-2021-44731,請將受影響套件升級到下列已修補版本。

• —升級至 2.49-1+deb11u1 或更新版本

CVE-2021-44731 正在被利用嗎?

低 — EPSS 為 1.0%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• from 0, < 2.49-1+deb11u1

CVSS 分數

參考連結(1)

• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2021-44731