Prometheus Stored DOM-Based Cross-Site Scripting Vulnerability [CVE-2019-3826]
CVE Number – CVE-2019-3826
A vulnerability in the query history functionality of Prometheus could allow an unauthenticated, remote attacker to execute a stored Document Object Model-based (DOM-based) cross-site scripting attack against a targeted system.The vulnerability is due to inadequate checks within the query history functionality of the affected software. An attacker could exploit this vulnerability by convincing a user to follow a crafted URL while on a Prometheus server. If successful, the attacker could execute and store persistent arbitrary scripts on the targeted system.Prometheus has confirmed this vulnerability and released software updates.
Analysis
- To exploit this vulnerability, the attacker may use misleading language or instructions to persuade a user to access a link that submits malicious input to the affected software. This requirement may reduce the likelihood of a successful exploit.
Safeguards
- Administrators are advised to apply the appropriate updates.Administrators are advised to allow only trusted users to have network access.Administrators are advised to use an unprivileged account when browsing the Internet.Administrators are advised to monitor critical systems.Users are advised not to open email messages from suspicious or unrecognized sources. If users cannot verify that links or attachments included in email messages are safe, they are advised not to open them.Users are advised not to visit websites or follow links that have suspicious characteristics or cannot be verified as safe.
Vendor Announcements
- Prometheus has posted a security issue at the following link: Issue 5164
Fixed Software
- Prometheus has issued an update at the following link: 2.8.1
Duncan is a technology professional with over 20 years experience of working in various IT roles. He has a interest in cyber security, and has a wide range of other skills in radio, electronics and telecommunications.