InterAccess TelnetD Server 4.0 Terminal Configuration Vulnerability

BID:1001

Info

InterAccess TelnetD Server 4.0 Terminal Configuration Vulnerability

Bugtraq ID: 1001
Class: Boundary Condition Error
CVE:
Remote: Yes
Local: Yes
Published: Feb 24 2000 12:00AM
Updated: Feb 24 2000 12:00AM
Credit: Posted to Bugtraq on February 24th, 2000 by USSR Labs <[email protected]>.
Vulnerable: Pragma Systems InterAccess TelnetD Server 4.0
- Microsoft Windows 95
- Microsoft Windows 98
- Microsoft Windows NT 4.0
Not Vulnerable: Pragma Systems InterAccess TelnetD Server 4.0 Build 8
- Microsoft Windows 95
- Microsoft Windows 98
- Microsoft Windows NT 4.0

Discussion

InterAccess TelnetD Server 4.0 Terminal Configuration Vulnerability

The Pragma Systems InterAccess TelnetID Server 4.0 can be crashed by sending invalid, unexpected characters in the client's terminal configuration settings. This causes telnetd.exe to GPF, and will cause the server to stop responding.

Exploit / POC

InterAccess TelnetD Server 4.0 Terminal Configuration Vulnerability

USSR Labs Exploit:
Executable - dostelnetd.exe
Source - dostelnetd.zip

This exploit triggers a server crash.

References

InterAccess TelnetD Server 4.0 Terminal Configuration Vulnerability

References:

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