CVE-2021-43638 describes an integer overflow vulnerability in the Amazon WorkSpaces agent versions below 1.0.1.1537. This flaw allows a local attacker to execute arbitrary code in kernel mode or cause a denial of service through memory corruption and OS crash by sending specially crafted I/O Request Packets to the IOCTL Handler 0x22001B. With a CVSS score of 8.8 (HIGH), the vulnerability has a low attack complexity and requires local privileges, but can lead to high impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or inclusion in CISA's KEV catalog, though it has received some community discussion and media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.0.1.1537CPE matchmatch criteria | cpe:2.3:a:amazon:workspaces:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:L/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.
Remediation records are not available for this CVE.