Rule Document 1:61939

Report a false positive

Rule Category

SERVER-WEBAPP -- Snort has detected traffic exploiting vulnerabilities in web based applications on servers.

Alert Message

SERVER-WEBAPP Microsoft SharePoint OAuth authentication bypass attempt

Rule Explanation

This rule looks for attempts to exploit an authentication bypass vulnerability in Microsoft SharePoint.

What To Look For

This rule looks for attempts to exploit an authentication bypass vulnerability in Microsoft SharePoint.

Known Usage

Public information/Proof of Concept available

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

Rule Groups

MITRE::ATT&CK Framework::Enterprise::Initial Access::Exploit Public-Facing Application

Adversaries may attempt to take advantage of a weakness in an Internet-facing computer or program using software, data, or commands in order to cause unintended or unanticipated behavior. The weakness in the system can be a bug, a glitch, or a design vulnerability. These applications are often websites, but can include databases (like SQL), standard services (like SMB or SSH), network device administration and management protocols (like SNMP and Smart Install), and any other applications with Internet accessible open sockets, such as web servers and related services.

MITRE::ATT&CK Framework::Enterprise::Privilege Escalation::Exploitation for Privilege Escalation

Privilege escalation includes techniques that allow an attacker to obtain a higher level of permissions on the mobile device. Attackers may enter the mobile device with very limited privileges and may be required to take advantage of a device weakness to obtain higher privileges necessary to successfully carry out their mission objectives.

Vulnerability::Severity::Critical

Vulnerability::Severity::High

CVE

CVE-2023-29357

Additional Links

portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2023-29357

Rule Vulnerability

Authentication Bypass

An Authentication Bypass occurs when there is a way to avoid providing user credentials to a system before performing restricted operations on said system.

CVE Additional Information

This product uses data from the NVD API but is not endorsed or certified by the NVD.

CVE-2023-29357

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