Rule Category

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

Alert Message

SERVER-WEBAPP Multiple products invalid HTTP request attempt

Rule Explanation

This event is generated when Moxa AWK-3131A invalid HTTP request denial of service attempt Impact: Attempted Denial of Service Details: Ease of Attack:

What To Look For

This rule detects a specially formatted HTTP request designed to take advantage of problems in multiple products that have simple HTTP servers.

Known Usage

Attacks/Scans seen in the wild

False Positives

Known false positives, with the described conditions

Issues found in less mature HTTP server code may not be present in more robust HTTP servers and HTTP traffic that causes one server to crash may be valid for another. . As such you should make sure any products listed in the references are not running in your environment unpatched before judging an event from this rule an FP

Contributors

Cisco Talos Intelligence Group

Rule Groups

No rule groups

CVE

Additional Links

Rule Vulnerability

Buffer Overflow

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

This product uses data from the NVD API but is not endorsed or certified by the NVD.
CVE-2014-3913
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CVE-2016-8723
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MITRE ATT&CK Framework

Tactic: Initial Access

Technique: Exploit Public-Facing Application

For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org