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>> Novell eDirectory "BerDecodeLoginDataRequest()" Denial Of Service Vulnerability

Title : Novell eDirectory "BerDecodeLoginDataRequest()" Denial Of Service Vulnerability
VUPEN ID : VUPEN/ADV-2006-4293
CVE ID : CVE-2006-4521
Rated as : Moderate Risk 
Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2006-11-01


Technical Description    Receive VUPEN Security alerts in a Text format  Receive VUPEN Security alerts in a PDF format  Receive VUPEN Security alerts in an XML format  Receive VUPEN Security notifications by SMS 

A vulnerability has been identified in Novell eDirectory, which could be exploited by remote attackers to cause a denial of service. This flaw is due to a NULL pointer dereference error in the "libnmasldap.so" module when processing malformed login requests via the "BerDecodeLoginDataRequest()" function, which could be exploited by attackers to crash a vulnerable server, creating a denial of service condition.

Affected Products

Novell Modular Authentication Service (NMAS) version 3.1.1 and prior
Novell eDirectory version 8.7.3 and prior
Novell eDirectory version 8.8 and prior

Solution

Upgrade to NMAS version 3.1.2 (part of Security Services 2.0.3) :
http://download.novell.com/index.jsp

References

http://www.vupen.com/english/advisories/2006/4293
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=437

Credits

Vulnerability reported by iDefense Labs

ChangeLog

2006-11-01 : Initial release

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