Cisco Security Advisory
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CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:X/RL:X/RC:X
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Multiple vulnerabilities in the web interface of the Cisco Registered Envelope Service could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack or redirect a user of the affected service to an undesired web page.
The vulnerabilities are due to insufficient validation of user-supplied input by the web-based management interface of the affected service. An attacker could exploit these vulnerabilities by persuading a user to click a malicious link or by sending an HTTP request that could cause the affected service to redirect the request to a specified malicious URL. A successful exploit could allow the attacker to execute arbitrary script code in the context of the web interface of the affected system or allow the attacker to access sensitive browser-based information on the affected system. These types of exploits could also be used in phishing attacks that send users to malicious websites without their knowledge.
There are no workarounds that address these vulnerabilities.
For additional information about cross-site scripting attacks and the methods used to exploit these vulnerabilities, see the following resources:
- Cisco Applied Mitigation Bulletin: Understanding Cross-Site Scripting (XSS) Threat Vectors
- OWASP reference: Cross-Site Scripting (XSS)
- CWE definition: CWE-79: Improper Neutralization of Input During Web Page Generation
- CWE definition: CWE-601: URL Redirection to Untrusted Site
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171115-res
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Vulnerable Products
These vulnerabilities affect the Cisco Registered Envelope Service, which is cloud based.
For information about affected software releases, consult the Cisco bug ID(s) at the top of this advisory.Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by these vulnerabilities.
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There are no workarounds that address these vulnerabilities.
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At the time of publication, fixed software had been provided to the Cisco Registered Envelope Service for these vulnerabilities. For the latest and most detailed information about fixed software releases, consult the Cisco bug ID(s) at the top of this advisory.
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The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerabilities that are described in this advisory.
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Cisco would like to thank independent researcher userburden and security researcher Rahul Raj for finding and reporting these vulnerabilities.
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To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
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Show LessVersion Description Section Status Date 1.0 Initial public release. — Final 2017-November-15
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