Authenticated spoofing requiring victim interaction
Published Dec 15, 2021 · Updated Aug 4, 2024
Spoofing in Microsoft SharePoint Server 2016, 2019, and Subscription Edition allows remote authenticated users to conduct an unspecified spoofing attack. Microsoft and NIST do not identify the vulnerable component or disclose how untrusted input is handled by the spoofing mechanism. Exploitation requires low-privileged authentication and victim interaction; the public record does not bound the resulting action beyond spoofing.
Summary
What happened
Spoofing in Microsoft SharePoint Server 2016, 2019, and Subscription Edition allows remote authenticated users to conduct an unspecified spoofing attack. Microsoft and NIST do not identify the vulnerable component or disclose how untrusted input is handled by the spoofing mechanism. Exploitation requires low-privileged authentication and victim interaction; the public record does not bound the resulting action beyond spoofing.
The record
- CVE
- CVE-2021-42320
- Published
- Dec 15, 2021
- Updated
- Aug 4, 2024
- Vendor
- Microsoft
- Product
- Microsoft SharePoint Enterprise Server 2016
- Classifications
- CWE-290
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 15, 2021CVE publishedPublication date reported by the CVE source.
- Aug 4, 2024Record 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=16.0.0 <16.0.5254.1000
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.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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