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5.0

iPlanet Enterprise Server 4.1 can be crashed by long URL

CVE-2001-0252 · published 25 years ago
Summary

The iPlanet Enterprise Server version 4.1 can be forced to stop working if an attacker sends a very long web request that includes many "../" path segments. This can make the server unavailable to legitimate users. Apply the vendor's update or limit the length of URLs the server will accept to prevent the issue.

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
VendorProductAffected versions
iplanet iplanet_enterprise_server 4.1sp5
cpe:2.3:a:iplanet:iplanet_enterprise_server:4.1sp5:*:*:*:*:*:*:*
Original advisory text
iPlanet (formerly Netscape) Enterprise Server 4.1 allows remote attackers to cause a denial of service via a long HTTP GET request that contains many "/../" (dot dot) sequences.
iPlanet (formerly Netscape) Enterprise Server 4.1 allows remote attackers to cause a denial of service via a long HTTP GET request that contains many "/../" (dot dot) sequences.
References
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
2% chance of attack within 30 days
Timeline
Published2 Jun 2001
Updated29 Oct 2026
First seen29 Sep 2026
Sources
CVE-2001-0252 · NVD
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