Title: 4D WebServer Authentication Buffer Overflow
Severity: CRITICAL
Description:
4D WebServer is a client/server database management system with integrated web development and serving. It runs on Microsoft Windows and MacOS operating systems.
Due to insufficient bounds checking of the username/password fields, 4D WebServer is prone to a buffer overflow condition. It is possible to overwrite stack variables such as the return address by overflowing either of these fields. This may enable a remote attacker to cause a denial of service or execute attacker-supplied instructions.
There is some amount of input validation performed on the authentication fields, which causes requests to be terminated if invalid characters are found. As a result, this may restrict exploitability of this issue for the purpose of executing arbitrary code.
It should be noted that the software will run in the SYSTEM context on multi-user Windows operating systems, so successful exploitation may result in a full compromise of the host.
This issue was reported for 4D WebServer version 6.7.3, earlier versions may also be affected.
Affected Products:
- 4D WebServer 6.5.7
- 4D WebServer 6.7.3
References:
- 4D Inc.: 4D Inc. Homepage
Juniper Networks provides this content via a wide variety of sources and production methods. If notified of errors or omissions in the content of this page, Juniper Networks, at its discretion, will modify or remove the page or leave the content as is, depending on various factors including but not limited to the reputation and authority of the party providing the notification. Please use the contact information displayed elsewhere on this page to report any errors or omissions regarding the content on this page.
