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Vulnerability of Sun Java Web, AS, DS: denial of service of NSS

Synthesis of the vulnerability 

A remote attacker can stop service by using a malicious SSLv2 session.
Impacted software: Oracle Directory Server, Oracle iPlanet Web Server, Sun AS.
Severity of this computer vulnerability: 3/4.
Creation date: 02/11/2006.
Revision date: 30/04/2007.
Références of this announce: 102670, 102896, 6240422, 6289081, 6421471, BID-20846, CVE-2006-5654, VIGILANCE-VUL-6268, VU#594904.

Description of the vulnerability 

The NSS libraries (Network Security Services) implement cryptographic features for SSL, TLS, PKCS, etc. Sun Java System Web Server, Sun ONE Application Server and Sun Java System Directory Server products use NSS.

The VIGILANCE-VUL-6770 bulletin describes a memory leak of NSS.

A remote attacker can use VIGILANCE-VUL-6770 vulnerability to stop services with SSLv2 activated.
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This cybersecurity vulnerability impacts software or systems such as Oracle Directory Server, Oracle iPlanet Web Server, Sun AS.

Our Vigil@nce team determined that the severity of this vulnerability is important.

The trust level is of type confirmed by the editor, with an origin of internet client.

An attacker with a expert ability can exploit this weakness alert.

Solutions for this threat 

Sun ONE Web Server 6.0: Service Pack 10.
The Service Pack 10 is available:
  http://www.sun.com/download/products.xml?id=43a84f89

Sun ONE Application Server 7: Update 3.
Sun ONE Application Server 7 Update 3 is corrected:
  http://www.sun.com/download/products.xml?id=438cfb75

Sun Java Web, Sun ONE AS: workaround for NSS.
A workaround is to deactivate SSLv2.

Sun Java System Directory Server 5.2: workaround for NSS.
A workaround is to restart service when it stops.
Patch 5 may be corrected but it was not confirmed by Sun.
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