Title: 4D WebStar Remote FTP Buffer Overflow Vulnerability
Severity: HIGH
Description:
4D WebStar is an application providing web, FTP and email services for Apple Mac OS X.
It has been reported that 4D WebStar is affected by a remote, pre-authentication FTP buffer overflow vulnerability. This issue is due to a failure of the application to properly verify buffer boundaries when storing user supplied input into internal, static buffers.
The problem presents itself when FTP commands of excessive length are sent to the affected server. Apparently such a command, which can be issued prior to authorization, will trigger an overflow in a static, stack-based buffer.
Successful exploitation will allow attackers to execute arbitrary code in the context of the affected application; the application typically runs as the user 'webstar' in group 'wheel'. This issue may also trigger a denial of service condition in the affected service.
Affected Products:
- 4D WebSTAR 4.0.0
- 4D WebSTAR 5.2.0
- 4D WebSTAR 5.2.1
- 4D WebSTAR 5.2.2
- 4D WebSTAR 5.2.3
- 4D WebSTAR 5.2.4
- 4D WebSTAR 5.3.0
- 4D WebSTAR 5.3.1
- 4D WebSTAR 5.3.2
References:
- 4D Inc.: 4D Inc. Homepage
- 4D Inc.: 4D WebSTAR Product Page
- Metasploit: Metasploit Framework Exploits
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