Summary
Impact: Information Disclosure. Microsoft rating: Moderate. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
There are multiple update packages available for some of the affected software. Do I need to install all the updates listed in the Security Updates table for the software?
Yes. Customers should apply all updates offered for the software installed on their systems. If multiple updates apply, they can be installed in any order.
What type of information could be disclosed by this vulnerability?
The type of information that could be disclosed if an attacker successfully exploited this vulnerability is Personally Identifiable Information (PII).
Security updates
16.0.5188.1000 — https://support.microsoft.com/kb/5001976
16.0.5188.1000 — https://support.microsoft.com/kb/5001981
15.0.5363.1000 — https://support.microsoft.com/kb/5001984
15.0.5363.1000 — https://support.microsoft.com/kb/5001992
15.0.5363.1000 — https://support.microsoft.com/kb/5001996
Vulnerabilities 1
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Medium 5.3
Microsoft SharePoint Server Information Disclosure Vulnerability
Microsoft SharePoint Server Information Disclosure Vulnerability
Revision history
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#1
Information published.
References
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CVE-2021-34519 Microsoft SharePoint Server Information Disclosure Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34519
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss