Security Advisory: Lotus Domino Denial of Service Vulnerability during Notes authentication processing (CVE-2011-1393)
Security Advisory CVE ID: CVE-2011-1393
Fortiguard contacted IBM to report a denial of service attack when a malicious packet is supplied to the Domino Server via Notes RPC. For more information, see Fortiguard Advisory FG-VD-11-007 at http://www.fortiguard.com/.
If an attacker can monitor and record all communications between a Notes client and a Domino server then it is possible to crash the Domino server by modifying a specific packet, in a specific way, during a specific operation.
Note: the use case cited by Fortiguard is very rare and, as such, requires careful coordination by the attacker.
Resolving the problem
The following releases of IBM Lotus Domino Server are susceptible to this malicious attack:
- 8.5.2 FP3 and earlier
- 8.5.2 Fix Pack 4 (or later Fix Packs)
|Security Rating using Common Vulnerability Scoring System (CVSS) v2|
|CVSS Base Score: <7.8>
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/71805 for the current score
CVSS Environmental Score*: <Undefined >
|Base Score Metrics:
|Temporal Score Metrics:
*The CVSS Environment Score is customer environment-specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the referenced links.
Note: According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.