Stored cross-site scripting in Jenkins - CVE-2019-10403

Detailed vulnerability description

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

The vulnerability exists in the SCM tag action tooltip due to the affected software does not escape the tag name on the tooltip for tag actions shown in the build history. A remote authenticated attacker who is able to control SCM tag names for these actions can permanently inject 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-2019-10403

Sources

• http://www.openwall.com/lists/oss-security/2019/09/25/3
• https://jenkins.io/security/advisory/2019-09-25/#SECURITY-1537%20(1)