Unauthenticated DNS spoofing via trusted reverse lookup
Published Jun 13, 2023 · Updated Jan 1, 2025
Spoofing in Microsoft Windows DNS Server allows remote attackers to corrupt DNS resolution via crafted network traffic. The public record maps the flaw to reliance on reverse DNS for a security-critical action, but Microsoft has not disclosed the affected code path or incorrect trust decision. The attack is network-reachable without authentication or user action, although successful spoofing depends on conditions Microsoft has not publicly described.
Summary
What happened
Spoofing in Microsoft Windows DNS Server allows remote attackers to corrupt DNS resolution via crafted network traffic. The public record maps the flaw to reliance on reverse DNS for a security-critical action, but Microsoft has not disclosed the affected code path or incorrect trust decision. The attack is network-reachable without authentication or user action, although successful spoofing depends on conditions Microsoft has not publicly described.
The record
- CVE
- CVE-2023-32020
- Published
- Jun 13, 2023
- Updated
- Jan 1, 2025
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-350
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 13, 2023CVE publishedPublication date reported by the CVE source.
- Jan 1, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.17763.0 <10.0.17763.4499
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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