#VU46142 Cross-site scripting in Subscribe Sidebar plugin by Blubrry - CVE-2020-25033
Published: August 31, 2020
Vulnerability identifier: #VU46142
Vulnerability risk: Low
CVSSv4.0: 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:P/U:Clear
CVE-ID: CVE-2020-25033
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Subscribe Sidebar plugin by Blubrry
Subscribe Sidebar plugin by Blubrry
Software vendor:
Blubrry
Blubrry
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 passed via the "status" GET parameter in "subscribe_sidebar.php" file. 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.
PoC:
/wp-admin/options-general.php?page=subscribe_sidebar.php&status=%3Cscript%3Ealert%28document.cookie%29%3C%2Fscript%3E
Remediation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.