Cross-site scripting in privoxy - CVE-2021-44543
Published: December 10, 2021
Vulnerability identifier: #VU58832
CSH Severity: Low
CVSS v4: 5.1 [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]
CVE-ID: CVE-2021-44543
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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 the template name. 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.
Affected software
privoxy
Ubuntu
privoxy (Ubuntu package)
Ubuntu
privoxy (Ubuntu package)
How to mitigate CVE-2021-44543
Install updates from vendor's website.
privoxy - update to 3.0.33
privoxy (Ubuntu package) - addressed in versions 3.0.26-5ubuntu0.3, 3.0.28-2ubuntu0.2
privoxy (Ubuntu package) - addressed in versions 3.0.26-5ubuntu0.3, 3.0.28-2ubuntu0.2