Vulnerability Details : CVE-2021-31181
Public exploit exists!
Microsoft SharePoint Remote Code Execution Vulnerability
Vulnerability category: Execute code
Products affected by CVE-2021-31181
- cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:sharepoint_foundation:2013:sp1:*:*:*:*:*:*
- cpe:2.3:a:microsoft:sharepoint_enterprise_server:2016:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-31181
18.58%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 95 %
Percentile, the proportion of vulnerabilities that are scored at or less
Metasploit modules for CVE-2021-31181
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Microsoft SharePoint Unsafe Control and ViewState RCE
Disclosure Date: 2021-05-11First seen: 2021-06-16exploit/windows/http/sharepoint_unsafe_controlThe EditingPageParser.VerifyControlOnSafeList method fails to properly validate user supplied data. This can be leveraged by an attacker to leak sensitive information in rendered-preview content. This module will leak the ViewState validation key and then use it to sig
CVSS scores for CVE-2021-31181
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.5
|
MEDIUM | AV:N/AC:L/Au:S/C:P/I:P/A:P |
8.0
|
6.4
|
NIST | |
|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
NIST | |
|
8.8
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
2.8
|
5.9
|
Microsoft Corporation |
CWE ids for CVE-2021-31181
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The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.Assigned by: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
References for CVE-2021-31181
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http://packetstormsecurity.com/files/163208/Microsoft-SharePoint-Unsafe-Control-And-ViewState-Remote-Code-Execution.html
Microsoft SharePoint Unsafe Control And ViewState Remote Code Execution ≈ Packet StormExploit;Third Party Advisory;VDB Entry
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https://www.zerodayinitiative.com/advisories/ZDI-21-573/
ZDI-21-573 | Zero Day InitiativeThird Party Advisory;VDB Entry
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https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31181
CVE-2021-31181 - Security Update Guide - Microsoft - Microsoft SharePoint Remote Code Execution VulnerabilityPatch;Vendor Advisory
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https://packetstorm.news/files/id/163208
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