CVE-2021-22017
is CVE-2021-22017real, exploitable, or a false positive? Here's the community ground truth.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Rhttproxy as used in vCenter Server contains a vulnerability due to improper implementation of URI normalization. A malicious actor with network access to port 443 on vCenter Server may exploit this issue to bypass proxy leading to internal endpoints being accessed.
References
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Practitioners rate this higher than its CVSS — treat with extra caution.
Field notes & remediation
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- 0
VMware vCenter Server Improper Access Control — Rhttproxy as used in vCenter Server contains a vulnerability due to improper implementation of URI normalization. Listed in the CISA KEV catalog (added 2022-01-10) — confirmed exploited in the wild, not theoretical. FIRST EPSS puts the chance of exploitation in the next 30 days at ~47%. Treat it as real and prioritize remediation over triage.
- 0
Required action for VMware vCenter Server: Apply updates per vendor instructions. CISA set a federal remediation due date of 2022-01-24. After patching, verify the vulnerable path is no longer reachable before closing the finding.
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