Intrusion PreventionMS.Exchange.Server.ProxyOracle.XSS
Description
This indicates an attack attempt to exploit a Cross-Site Scripting vulnerability in Microsoft Exchange Server.
The vulnerability is due to insufficient sanitizing of user supplied inputs in the application. A remote attacker may be able to exploit this to execute arbitrary script code within the context of the application, via a crafted request.
Affected Products
Microsoft Exchange Server 2013 Cumulative Update 23
Microsoft Exchange Server 2016 Cumulative Update 20
Microsoft Exchange Server 2019 Cumulative Update 9
Microsoft Exchange Server 2019 Cumulative Update 8
Microsoft Exchange Server 2016 Cumulative Update 19
Impact
System Compromise: Remote attackers can execute arbitrary script code in the context of the application.
Recommended Actions
Apply the most recent upgrade or patch from the vendor.
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-31195
Telemetry
Coverage
| IPS (Regular DB) | |
| IPS (Extended DB) |
Version Updates
| Date | Version | Detail |
|---|---|---|
| 2021-09-23 | 18.164 | Default_action:pass:drop |
| 2021-08-19 | 18.143 | Sig Added |
| 2021-08-12 | 18.139 |
| ID | 50669 |
| Created | Aug 11, 2021 |
| Updated | Jan 19, 2022 |
| Risk |
|
| CVE ID | CVE-2021-31195 |
| Exploit Prediction Score | 92.42% |
| Default Action | drop |
| Active | |
| Affected OS | Windows |
| Affected App | MS_Exchange |