Authenticated cross-site scripting via unsanitized web requests
Published Aug 17, 2020 · Updated Nov 18, 2024
Cross-site scripting in Microsoft SharePoint Server allows remote authenticated users to run script in a site user's security context. SharePoint's web-request sanitizer accepts crafted request content without neutralizing script; Microsoft has not named the handler or parameter. A SharePoint account is required; exploitation can expose unauthorized content, alter site permissions or content, and act as the affected user.
Summary
What happened
Cross-site scripting in Microsoft SharePoint Server allows remote authenticated users to run script in a site user's security context. SharePoint's web-request sanitizer accepts crafted request content without neutralizing script; Microsoft has not named the handler or parameter. A SharePoint account is required; exploitation can expose unauthorized content, alter site permissions or content, and act as the affected user.
The record
- CVE
- CVE-2020-1499
- Published
- Aug 17, 2020
- Updated
- Nov 18, 2024
- Vendor
- Microsoft
- Product
- Microsoft SharePoint Foundation 2013
- Classifications
- T1059.007
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 17, 2020CVE publishedPublication date reported by the CVE source.
- Nov 18, 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?
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- Affected versionversion=15.0.0 <publication
What conditions does exploitation require?
What is affected?
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
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Technologies
Your stack
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Your stack
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