#VU99316 Stored cross-site scripting in Cisco Secure Firewall Management Center (formerly Firepower Management Center, FMC) - CVE-2024-20387

Vulnerability identifier: #VU99316

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-20387

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco Secure Firewall Management Center (formerly Firepower Management Center, FMC)
Client/Desktop applications / Antivirus software/Personal firewalls

Vendor: Cisco Systems, Inc

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in the web-based management interface. A remote user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Cisco Secure Firewall Management Center (formerly Firepower Management Center, FMC): 6.2.3.17 - 6.2.3.18, 6.4.0.13 - 6.4.0.18, 6.6.0 - 6.6.7.2, 7.0.6 - 7.0.6.2, 7.2.4 - 7.2.8.1, 7.3.0 - 7.3.1.2, 7.4.0 - 7.4.1.1

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External links
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fmc-xss-infodisc-RL4mJFer

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.