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CVE-2000-0659: AnalogX proxy server can crash from long user ID

CVE-2000-0659 · published 26 years ago

Summary

The AnalogX proxy server (version 4.04 and earlier) can be forced to stop working if an attacker sends a specially crafted SOCKS4 request with an overly long user ID. This causes the server to overflow its memory buffer, leading to a denial of service where legitimate users lose access. Update to a newer version or apply the vendor's patch to prevent the crash.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software

Vendor	Product	Affected versions
analogx	proxy	4.4 `cpe:2.3:a:analogx:proxy:4.4:::::::*`

Original advisory text

Buffer overflow in AnalogX proxy server 4.04 and earlier allows remote attackers to cause a denial of service via a long user ID in a SOCKS4 CONNECT request.

References

http://archives.neohapsis.com/archives/bugtraq/2000-07/0360.html Exploit Patch Vendor Advisory
http://www.securityfocus.com/bid/1504 Exploit Patch Vendor Advisory

Fix within

Internet-facing 14 days

Internal 60 days

Not known to be exploited
Can be exploited automatically (estimated)
Gives an attacker partial control (estimated)

Severity

5.0 Medium

Exploitation

1% chance of attack within 30 days

Timeline

Published25 Jul 2000

Updated4 Nov 2026

First seen29 Sep 2026

Sources

CVE-2000-0659 · NVD

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