SID 1:57193

Rule Category

OS-WINDOWS -- Snort has detected traffic targeting vulnerabilities in a Windows-based operating system. This does not include browser traffic or other software on the OS, but attacks against the OS itself.

Alert Message

OS-WINDOWS Microsoft Windows TCP/IP Remote Code Execution Vulnerability attempt

Rule Explanation

This rule looks for a large amount of IPv6 fragment headers being sent to a host.

What To Look For

This rule alerts on an attempt to corrupt memory via IPv6 fragment reassembly.

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

Rule Groups

MITRE::ATT&CK Framework::Enterprise::Execution::User Execution::Malicious File

An adversary may rely upon a user opening a malicious file in order to gain execution. Users may be subjected to social engineering to get them to open a file that will lead to code execution. This user action will typically be observed as follow-on behavior from Spearphishing Attachment. Adversaries may use several types of files that require a user to execute them, including .doc, .pdf, .xls, .rtf, .scr, .exe, .lnk, .pif, and .cpl.

CVE

CVE-2021-24086 CVE-2021-24094

Additional Links

portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2021-24086

portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2021-24094

portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2023-38160

Rule Vulnerability

Memory Corruption

Memory Corruption is any vulnerability that allows the modification of the content of memory locations in a way not intended by the developer. Memory corruption results are inconsistent; they could lead to fatal errors and system crashes or data leakage; some have no effect at all.

CVE Additional Information

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

CVE-2021-24086

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CVE-2021-24094

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