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. (such as?)
OS-WINDOWS Microsoft Windows Graphics Component privilege escalation attempt
This rule looks for binary strings that are associated with possible exploit attempts for this vulnerability.
What To Look For
This rule alerts when a specially crafted executable designed to exploit CVE-2021-26868 is detected.
No public information
No known false positives
Cisco Talos Intelligence Group
MITRE ATT&CK Framework
Technique: User Execution
For reference, see the MITRE ATT&CK vulnerability types here:
Buffer Overflows occur when a memory location is filled past its expected boundaries. Computer attackers target systems without proper terminating conditions on buffers, which then write the additional information in other locations in memory, overwriting what is there. This could corrupt the data, making the system behave erratically or crash. The new information could include malicious executable code, which might be executed.
CVE Additional Information