Cyber Resilience

CVE-2021-44730

High

Published: 17 February 2022

Published
17 February 2022
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 7.8 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.0004 12.0th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-44730 is a high-severity Link Following (CWE-59) vulnerability in Canonical Ubuntu Linux. Its CVSS base score is 7.8 (High).

Operationally, ranked at the 12.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

snapd 2.54.2 did not properly validate the location of the snap-confine binary. A local attacker who can hardlink this binary to another location to cause snap-confine to execute other arbitrary binaries and hence gain privilege escalation. Fixed in snapd versions…

more

2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1

CWE(s)
CWE-59

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

canonical
snapd
≤ 2.54.2
canonical
ubuntu linux
18.04, 20.04, 21.10
fedoraproject
fedora
34, 35
debian
debian linux
10.0, 11.0

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References