CVE-2017-6670 in Unified Communications Domain Manager
Summary
by MITRE
A vulnerability in the web-based GUI of Cisco Unified Communications Domain Manager could allow an unauthenticated, remote attacker to redirect a user to a malicious web page, aka an Open Redirect issue. More Information: CSCvc54813. Known Affected Releases: 8.1(7)ER1.
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Analysis
by VulDB Data Team • 12/27/2020
The vulnerability identified as CVE-2017-6670 represents a critical open redirect flaw within the web-based graphical user interface of Cisco Unified Communications Domain Manager version 8.1(7)ER1. This security weakness enables unauthenticated remote attackers to manipulate the application's redirect functionality, potentially leading to successful phishing attacks and user deception. The vulnerability stems from insufficient input validation and sanitization within the web application's redirect parameters, allowing malicious actors to craft URLs that would redirect users to arbitrary destinations without proper authorization checks.
This particular flaw falls under the Common Weakness Enumeration category CWE-601, which specifically addresses open redirect vulnerabilities where applications redirect users to external domains without adequate validation. The vulnerability operates by exploiting the lack of proper domain validation in the redirect mechanism, permitting attackers to insert malicious URLs that appear legitimate within the context of the Cisco application. The attack vector requires no authentication credentials, making it particularly dangerous as it can be exploited by anyone with network access to the affected system.
The operational impact of this vulnerability extends beyond simple redirection, as it creates opportunities for sophisticated social engineering campaigns. An attacker could redirect users to malicious websites that mimic legitimate Cisco interfaces or phishing pages designed to capture credentials and sensitive information. The attack chain typically involves crafting a malicious URL with a crafted redirect parameter, which when clicked by an authenticated user within the Cisco Unified Communications Domain Manager environment, would initiate the unwanted redirection. This creates a significant risk for enterprise environments where users may trust the legitimate Cisco interface and inadvertently provide sensitive information to attackers.
Organizations affected by CVE-2017-6670 should implement immediate mitigations including patching to the latest available software versions that address the open redirect vulnerability. Network segmentation and web application firewalls can provide additional protective layers by monitoring and filtering suspicious redirect traffic. The vulnerability aligns with ATT&CK technique T1566 which covers spearphishing through social engineering, where the open redirect serves as an initial delivery mechanism for malicious payloads. Security teams should also implement user education programs to raise awareness about suspicious redirects and phishing attempts, as the effectiveness of technical mitigations can be reduced if users are not trained to recognize potentially malicious redirections. Additionally, monitoring network traffic for unusual redirect patterns and implementing strict access controls can help detect and prevent exploitation attempts.