Cross-site scripting in Ivanti Connect Secure (formerly Pulse Connect Secure) - CVE-2019-11507
Published: April 20, 2020
Vulnerability identifier: #VU27042
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-11507
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Ivanti
Affected software:
Ivanti Connect Secure (formerly Pulse Connect Secure)
Ivanti Connect Secure (formerly Pulse Connect Secure)
Detailed vulnerability 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 on the Application Launcher page. A remote attacker can trick the victim to follow a specially crafted link 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.
How to mitigate CVE-2019-11507
Install updates from vendor's website.
Sources
- https://devco.re/blog/2019/09/02/attacking-ssl-vpn-part-3-the-golden-Pulse-Secure-ssl-vpn-rce-chain-with-Twitter-as-case-study/
- https://i.blackhat.com/USA-19/Wednesday/us-19-Tsai-Infiltrating-Corporate-Intranet-Like-NSA.pdf
- https://kb.pulsesecure.net/?atype=sa
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44101/