Cross-site scripting (XSS) vulnerability in IBM Lotus Domino Web server

JPCERT/CC contacted IBM® Lotus® to report a potential cross-site scripting (XSS) vulnerability in the IBM Lotus Domino® Web server.

In order to successfully exploit this vulnerability:

(1) Domino Web Server task (HTTP) must be enabled.

(2) Attacker must create a specific malicious URL that exposes the cross-site scripting vulnerability.

(3) User must authenticate with the Domino server via a Web browser

(4) User must follow or click the malicious URL

(5) The cross-site scripting vulnerability is then executed

The advisory is available at the following link:
http://jvn.jp/jp/JVN%2384565055/index.html

This issue was reported to Quality Engineering as SPR# KEMG6ZK34H, and has been fixed in Lotus Domino releases 6.5.6 Fix Pack 2 (FP2), 7.0.2 Fix Pack 2 (FP2), 7.0.3 and 8.0.

Refer to the Upgrade Central site for details on upgrading Notes/Domino.

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Security Rating using Common Vulnerability Scoring System (CVSS) v2

CVSS Base Score: < 4.3 > ---- Impact Subscore: < 2.9 > ---- Exploitability Subscore: < 8.6 > CVSS Temporal Score: < 3.4 > CVSS Environmental Score: < Undefined* > Overall CVSS Score: < 3.4 >

Base Score Metrics: Related exploit range/Attack Vector: < Network > Access Complexity: < Medium > Authentication < None > Confidentiality Impact: < None > Integrity Impact: < Partial > Availability Impact: < None >

Temporal Score Metrics: Exploitability: < Proof of Concept Code> Remediation Level: < Official Fix > Report Confidence: < Confirmed >

References: CVSS v2 Complete Documentation CVSS v2 Online Calculator

*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.