Title: Pragma InterAccess Denial of Service Vulnerability
Severity: HIGH
Description:
Pragma InterAccess for Microsoft 95/98 is a fully-featured commercial Telnet server.
Pragma InterAccess does not adequately compensate for large bursts of data that are sent to port 23(telnet).
It is possible to exhaust system resources by flooding the port with an excessive amount of characters(15000+). This causes the telnet daemon to terminate and a denial of services to all telnet-related communications on that host. The daemon must be restarted to regain functionality.
This may be due to a buffer overflow condition. If this is the case, it may be possible for attackers to execute arbitrary code on the target host.
Affected Products:
- Pragma Systems InterAccess TelnetD Server 4.0.0
- Pragma Systems InterAccess TelnetD Server 4.0.0 Build 4
- Pragma Systems InterAccess TelnetD Server 4.0.0 Build 5
References:
- DHCorp: DHCorp Advisories
- Pragma Systems: InterAccess for Win 95/98 Product Page
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