SID 1757
Msg
"WEB-MISC b2 arbitrary command execution attempt"
Summary
This event is generated when an attempt is made to exploit a known vulnerability on a web server or a web application resident on a web server.
Classtype
web-application-attack
Impact
Information gathering and system integrity compromise. Possible unauthorized administrative access to the server. Possible execution of arbitrary code of the attackers choosing in some cases.
Detailed Information
This event is generated when an attempt is made to compromise a host running a Web server or a vulnerable application on a web server.
Many known vulnerabilities exist for each implementation and the attack scenarios are legion.
Some applications do not perform stringent checks when validating the credentials of a client host connecting to the services offered on a host server. This can lead to unauthorized access and possibly escalated privileges to that of the administrator. Data stored on the machine can be compromised and trust relationships between the victim server and other hosts can be exploited by the attacker.
Affected Systems
- All systems using a web server.
Attack Scenarios
are legion.
Some applications do not perform stringent checks when validating the credentials of a client host connecting to the services offered on a host server. This can lead to unauthorized access and possibly escalated privileges to that of the administrator. Data stored on the machine can be compromised and trust relationships between the victim server and other hosts can be exploited by the attacker.
Ease Of Attack
Simple. Exploits exist.
False Positives
None known.
False Negatives
None known.
Corrective Action
Ensure the system is using an up to date version of the software and has had all vendor supplied patches applied.
Check the host logfiles and application logs for signs of compromise.
Contributors
- Sourcefire Vulnerability Research Team
- Brian Caswell
- Nigel Houghton
