CVE-2021-44731
CVSS v3
7.8
HIGH
EPSS Score
2.3 %
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
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
Technical details
- Published
- 2022-02-17
Frequently asked questions
What is CVE-2021-44731?
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
Is CVE-2021-44731 actively exploited?
Active exploitation of CVE-2021-44731 has not been confirmed. The EPSS score is 2.3%, indicating the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-44731?
CVE-2021-44731 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2021-44731 affecting your environment?
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