Microsoft Indexing Service is reported prone to a buffer overflow vulnerability. This issue results from insufficient boundary checks performed by the application when copying user-supplied data in to sensitive process buffers. A remote or local attacker may execute arbitrary code on a vulnerable computer, which could ultimately allow the attacker to gain unauthorized access to the computer or gain elevated privileges. This issue can be exploited by sending a malformed query to the Indexing Service. It is reported that issue may be locally and remotely exploited, if Indexing Service is enabled on a vulnerable computer.
Permit local access for trusted individuals only. Where possible, use restricted environments and restricted shells.
To prevent against local attacks, it is recommended that local interactive access to a vulnerable computer should be provided to trusted individuals only.
Block external access at the network boundary, unless external parties require service.
If the Indexing service is enabled with Microsoft IIS to be accessible remotely, it is recommended that access should be limited to trusted computers and networks only. Block UDP ports 137 and 138 and TCP ports 139 and 445 to deny access to the resources.
Disallow anonymous access to services. Permit access for trusted individuals only.
Do not allow anonymous access to the resources. Ensure that a strong password policy is in place to protect against brute force type attacks.
Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy network intrusion detection systems to monitor network traffic for signs of suspicious or anomalous activity. This may aid in detecting attacks as well as help in detecting malicious activities that are performed as a result of exploitation.
Implement multiple redundant layers of security.
Deploy applicable memory protection schemes such as non-executable stack/heap configurations and randomly mapped memory segments. This may complicate exploitation of memory corruption vulnerabilities.
Microsoft has released updates to address this vulnerability in supported versions of the Windows operating system.