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CVE-2021-21973

medium · 5.3Actively exploited

On the CISA Known Exploited Vulnerabilities catalog

Apply updates per vendor instructions.

Added 2022-03-07Remediation due 2022-03-21

A public exploit / detection template exists

Weaponised detection is publicly available, which meaningfully raises real-world risk regardless of CVSS. nuclei-templates →

The vSphere Client (HTML5) contains an SSRF (Server Side Request Forgery) vulnerability due to improper validation of URLs in a vCenter Server plugin. A malicious actor with network access to port 443 may exploit this issue by sending a POST request to vCenter Server plugin leading to information disclosure. This affects: VMware vCenter Server (7.x before 7.0 U1c, 6.7 before 6.7 U3l and 6.5 before 6.5 U3n) and VMware Cloud Foundation (4.x before 4.2 and 3.x before 3.10.1.2).

5.3
CVSS
87.6%
EPSS (exploit prob.)
100th
EPSS percentile
2021-02-24
Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weaknesses

CWE-918

Affected products

VendorProductAffected versions
vmwarecloud_foundation>= 3.0, < 3.10.1.2
vmwarecloud_foundation>= 4.0, < 4.2
vmwarevcenter_server6.5
vmwarevcenter_server6.5
vmwarevcenter_server6.5
vmwarevcenter_server6.5
vmwarevcenter_server6.5
vmwarevcenter_server6.5
vmwarevcenter_server6.5
vmwarevcenter_server6.5
vmwarevcenter_server6.5
vmwarevcenter_server6.5
vmwarevcenter_server6.5
vmwarevcenter_server6.5
vmwarevcenter_server6.5
vmwarevcenter_server6.5
vmwarevcenter_server6.5
vmwarevcenter_server6.5
vmwarevcenter_server6.5
vmwarevcenter_server6.5
vmwarevcenter_server6.5
vmwarevcenter_server6.7
vmwarevcenter_server6.7
vmwarevcenter_server6.7
vmwarevcenter_server6.7
vmwarevcenter_server6.7
vmwarevcenter_server6.7
vmwarevcenter_server6.7
vmwarevcenter_server6.7
vmwarevcenter_server6.7
vmwarevcenter_server6.7
vmwarevcenter_server6.7
vmwarevcenter_server6.7
vmwarevcenter_server6.7
vmwarevcenter_server6.7
vmwarevcenter_server6.7
vmwarevcenter_server7.0
vmwarevcenter_server7.0
vmwarevcenter_server7.0
vmwarevcenter_server7.0

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References

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2021-21973