medium
4.8
CWE
79
Advisory Published
Updated

CVE-2021-1603: Cisco Identity Services Engine Stored Cross-Site Scripting Vulnerabilities

First published: Thu Jul 08 2021(Updated: )

Multiple vulnerabilities in the web-based management interface of Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to conduct a stored cross-site scripting (XSS) attack against a user. These vulnerabilities exist because the web-based management interface does not sufficiently validate user-supplied input. An attacker could exploit these vulnerabilities by injecting malicious code into specific pages of the interface. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected interface or access sensitive, browser-based information. To exploit these vulnerabilities, the attacker would need valid administrative credentials.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco Identity Services Engine (ISE)<2.6.0
Cisco Identity Services Engine (ISE)=2.6\(0.999\)
Cisco Identity Services Engine (ISE)=2.6.0
Cisco Identity Services Engine (ISE)=2.6.0-patch1
Cisco Identity Services Engine (ISE)=2.6.0-patch2
Cisco Identity Services Engine (ISE)=2.6.0-patch3
Cisco Identity Services Engine (ISE)=2.6.0-patch5
Cisco Identity Services Engine (ISE)=2.6.0-patch6
Cisco Identity Services Engine (ISE)=2.6.0-patch7
Cisco Identity Services Engine (ISE)=2.6.0-patch8
Cisco Identity Services Engine (ISE)=2.7\(0.356\)
Cisco Identity Services Engine (ISE)=2.7.0
Cisco Identity Services Engine (ISE)=2.7.0-patch1
Cisco Identity Services Engine (ISE)=2.7.0-patch2
Cisco Identity Services Engine (ISE)=3.0.0
Cisco Identity Services Engine (ISE)=3.0.0-patch1
Cisco Identity Services Engine (ISE)=3.0.0-patch2

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2021-1603?

    CVE-2021-1603 has a high severity rating due to the potential for authenticated remote attackers to conduct stored cross-site scripting attacks.

  • How do I fix CVE-2021-1603?

    To fix CVE-2021-1603, it is recommended to apply the latest security patches released by Cisco for affected versions of Identity Services Engine.

  • Which versions of Cisco Identity Services Engine are affected by CVE-2021-1603?

    CVE-2021-1603 affects Cisco Identity Services Engine versions prior to 2.6.0, as well as specific patches in the 2.6 and 2.7 series.

  • What types of attacks can CVE-2021-1603 facilitate?

    CVE-2021-1603 can facilitate stored cross-site scripting attacks, allowing attackers to execute malicious scripts in the context of a user session.

  • What steps should be taken if my system is vulnerable to CVE-2021-1603?

    If your system is vulnerable to CVE-2021-1603, you should immediately update to the fixed version or apply the requisite patches as recommended by Cisco.

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