CVE-2021-44730 is a high-severity privilege escalation vulnerability affecting snapd versions prior to 2.54.3 across Canonical, Debian, and Fedora Project distributions. A local attacker can exploit this flaw by hardlinking the snap-confine binary, tricking it into executing arbitrary code and gaining elevated privileges. With a CVSS score of 8.8, this vulnerability presents a significant risk due to its low attack complexity and complete compromise of confidentiality, integrity, and availability. While not currently listed on the KEV catalog or Hot List, and lacking public exploit code, it has garnered some community discussion and media coverage, indicating awareness of its potential impact.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 2.54.2CPE matchmatch criteria | cpe:2.3:a:canonical:snapd:*:*:*:*:*:*:*:* | ||
18.04CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | ||
20.04CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* | ||
21.10CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:21.10:*:*:*:*:*:*:* | ||
34CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.