Vulnerability in VMware App Volumes
CVE-2021-21999
VMware Tools for Windows (11.x.y prior to 11.2.6), VMware Remote Console for Windows (12.x prior to 12.0.1) , VMware App Volumes (2.x prior to 2.18.10 and 4 prior to 2103) contain a local privilege escalation vulnerability. An attacker with normal access to a virtual machine may exploit this issue by placing a malicious file renamed as `openssl.cnf' in an unrestricted directory which would allow code to be executed with elevated privileges.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.015 (73.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
- VMware App Volumes
- VMware Remote Console
- VMware Tools
- VMware Tools For Windows, Remote Console Windows And App Volumes — versions VMware Tools for Windows (11.x.y prior to 11.2.6), VMware Remote Console for Windows (12.x prior to 12.0.1) , VMware App Volumes (2.x prior to 2.18.10 and 4 prior to 2103)
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.vmware.com/security/advisories/VMSA-2021-0013.html (Patch, Vendor Advisory)
- www.zerodayinitiative.com/advisories/ZDI-21-754/ (VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21999?
- CVE-2021-21999 is a high-severity vulnerability in VMware App Volumes, classified under Uncontrolled Search Path Element. CVSS score: 7.8/10. Published 2021-06-23.
- How severe is CVE-2021-21999?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2021-21999 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.