#VU50861 Cross-site scripting


Published: 2021-02-23

Vulnerability identifier: #VU50861

Vulnerability risk: Low

CVSSv3: 4.7 [CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-29021

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
GateManager
Server applications / Remote access servers, VPN

Vendor:

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 web UI. A remote authenticated 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.

Mitigation
Install update from vendor's website.

Vulnerable software versions

GateManager: before 9.3

External links
https://www.secomea.com/support/cybersecurity-advisory/


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.


Latest bulletins with this vulnerability