SB2019080733 - Stored cross-site scripting in PegDown Formatter plugin for Jenkins

Description

This security bulletin contains information about 1 security vulnerability.

1) Stored cross-site scripting (CVE-ID: CVE-2019-10374)

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

The vulnerability exists due to the affected software does not prevent the use of "javascript:" scheme in URLs for links. A remote authenticated attacker able to edit descriptions and other fields rendered using the configured markup formatter can insert links with the javascript scheme into the Jenkins UI.

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.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• http://www.openwall.com/lists/oss-security/2019/08/07/1
• https://jenkins.io/security/advisory/2019-08-07/#SECURITY-142