Self-XSS in cPanel



| Updated: 2021-03-16
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID N/A
CWE-ID CWE-79
Exploitation vector Network
Public exploit N/A
Vulnerable software
 cPanel
Web applications / Remote management & hosting panels

Vendor cPanel, Inc

Security Bulletin

This security bulletin contains information about 1 vulnerabilities.

Updated: 16.03.2021

Updated vulnerability description, lowered bulletin risk level from Medium to Low.

1) Self-XSS

EUVDB-ID: #VU51489

Risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: N/A

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

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 when attempting to save an EasyApache profile with the same name as an existing profile. A remote attacker can trick the victim to inject a specially crafted HTML and script into the profile page and execute it 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 updates from vendor's website.

Vulnerable software versions

cPanel: 11.86.0.1 - 11.94.0.2

CPE2.3 External links

https://news.cpanel.com/cpanel-tsr-2021-0002-announcement/
https://news.cpanel.com/cpanel-tsr-2021-0002-full-disclosure/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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



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