CVE-2021-42377 is a critical vulnerability affecting Busybox, Fedora Project, and NetApp products, specifically within Busybox's hush applet. It involves an attacker-controlled pointer free that can lead to denial of service and potential remote code execution when processing a specially crafted shell command containing "&&&". With a CVSS score of 9.8 (Critical), this vulnerability has a network attack vector, low attack complexity, and high impacts on confidentiality, integrity, and availability. While there is no known active exploitation, public exploit code, or inclusion in CISA's KEV catalog, the vulnerability has garnered some community discussion and media coverage, indicating awareness.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
1.33.0CPE matchmatch criteria | cpe:2.3:a:busybox:busybox:1.33.0:*:*:*:*:*:*:* | ||
1.33.1CPE matchmatch criteria | cpe:2.3:a:busybox:busybox:1.33.1:*:*:*:*:*:*:* | ||
33CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | ||
34CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* | ||
Range not provided by sourceCPE matchmatch criteria | cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.