Cross-site scripting in Debian Linux - CVE-2018-1000671

Detailed vulnerability description

The vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data when processing data passed via Victim's browser must follow a URL supplied by the attacker. This vulnerability appears to have been fixed in none available. 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-2018-1000671

Sources

• https://github.com/sympa-community/sympa/issues/268
• https://lists.debian.org/debian-lts-announce/2018/09/msg00023.html
• https://usn.ubuntu.com/4442-1/