ID

VAR-201010-0436

TITLE

Novell eDirectory Server Malformed Index Denial of Service Vulnerability

DESCRIPTION

This vulnerability allows attackers to deny services on vulnerable installations of Novell eDirectory. Authentication is not required in order to trigger this vulnerability.The flaw exists within Novell's eDirectory Server's NCP implementation which binds, by default, to TCP port 524. While handling a malformed request, the application explicitly trusts a field when translating it to an index into a table of counters. If this index is too large, the application will set a value outside the array and the ndsd process will become unresponsive resulting in an inability to authenticate to that server. Novell eDirectory is a cross-platform directory server. Novell eDirectory is prone to a denial-of-service vulnerability. Remote attackers can exploit this issue to crash the application, denying service to legitimate users. Versions prior to eDirectory 8.8.5 ftf3 are vulnerable. ZDI-10-189: Novell eDirectory Server Malformed Index Denial of Service Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-10-189 October 1, 2010 -- CVSS: 7.8, (AV:N/AC:L/Au:N/C:N/I:N/A:C) -- Affected Vendors: Novell -- Affected Products: Novell eDirectory -- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability by Digital Vaccine protection filter ID 9971. -- Vendor Response: Novell has issued an update to correct this vulnerability. More details can be found at: http://www.novell.com/support/viewContent.do?externalId=7006389&sliceId=2 -- Disclosure Timeline: 2009-04-28 - Vulnerability reported to vendor 2010-10-01 - Coordinated public release of advisory -- Credit: This vulnerability was discovered by: * 1c239c43f521145fa8385d64a9c32243 -- About the Zero Day Initiative (ZDI): Established by TippingPoint, The Zero Day Initiative (ZDI) represents a best-of-breed model for rewarding security researchers for responsibly disclosing discovered vulnerabilities. Researchers interested in getting paid for their security research through the ZDI can find more information and sign-up at: http://www.zerodayinitiative.com The ZDI is unique in how the acquired vulnerability information is used. TippingPoint does not re-sell the vulnerability details or any exploit code. Instead, upon notifying the affected product vendor, TippingPoint provides its customers with zero day protection through its intrusion prevention technology. Explicit details regarding the specifics of the vulnerability are not exposed to any parties until an official vendor patch is publicly available. Furthermore, with the altruistic aim of helping to secure a broader user base, TippingPoint provides this vulnerability information confidentially to security vendors (including competitors) who have a vulnerability protection or mitigation product. Our vulnerability disclosure policy is available online at: http://www.zerodayinitiative.com/advisories/disclosure_policy/ Follow the ZDI on Twitter: http://twitter.com/thezdi _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/

IOT TAXONOMY

AFFECTED PRODUCTS

CVSS

THREAT TYPE

network

TYPE

Unknown

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

1c239c43f521145fa8385d64a9c32243

SOURCES

LAST UPDATE DATE

2022-05-17T02:01:24.186000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE