Vulnerability in Vmware Installbuilder
CVE-2021-22038
On Windows, the uninstaller binary copies itself to a fixed temporary location, which is then executed (the originally called uninstaller exits, so it does not block the installation directory). This temporary location is not randomized and does not restrict access to Administrators only so a potential attacker could plant a binary to replace the copied binary right before it gets called, thus gaining Administrator privileges (if the original uninstaller was executed as Administrator). The vulnerability only affects Windows installers.
EPSS: 0.010 (58.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Vmware Installbuilder
- N/a Vmware Installbuilder — versions All InstallBuilder versions prior to version 21.6.0
Weakness classification (CWE)
References
- security@vmware.com (x_refsource_MISC, Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-22038?
- CVE-2021-22038 is a high-severity vulnerability in Vmware Installbuilder, classified under Use of Insufficiently Random Values. CVSS score: 8.8/10. Published 2021-10-29.
- How severe is CVE-2021-22038?
- High severity. CVSS v3 base score is 8.8 out of 10.