CVE-2020-17453
About
WSO2 Management Console through 5.10 allows XSS via the carbon/admin/login.jsp msgId parameter.
Rainforest analyst review
A reflected XSS lives in the WSO2 Management Console's login page, in the msgId parameter. Being reflected, it isn't stored on the server; an attacker has to craft a URL and get a victim to click it, at which point script runs in that victim's browser session.
The payoff an attacker wants is a management-console session, so a successful lure against an admin is worth something. But the reflected nature plus the required user interaction make this a phishing-style vector rather than an unauthenticated takeover, which tempers the urgency.
Because the advisory spans a whole family of WSO2 products, our first job is inventory and exposure: which of these components are deployed and, more importantly, which expose their management console where an outside attacker could feed a victim the crafted link. Detection of the malicious parameter pattern is a reasonable interim control.
References
Related CVEs
Frequently asked questions
What is CVE-2020-17453?
WSO2 Management Console through 5.10 allows XSS via the carbon/admin/login.jsp msgId parameter.
How severe is CVE-2020-17453?
CVE-2020-17453 carries a CVSS 3.1 base score of 6.1, rated medium. On the Rainforest Risk Index — which weighs the severity alongside how easy the flaw is to reach and how broad its impact is — it scores 67 out of 100, in the elevated band.
How is CVE-2020-17453 exploited?
According to the CVSS vector (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N): attack vector Network, attack complexity Low, privileges required None, user interaction Required. Impact on confidentiality Low, integrity Low and availability None.
Which products are affected by CVE-2020-17453?
Public advisories list the following as affected: api manager, api manager analytics, api microgateway, enterprise integrator, identity server, identity server analytics, +2. Check the references on this page for the exact versions each vendor confirms.
How do I fix CVE-2020-17453?
Apply the fix the vendor published — the references on this page link to the primary advisories and patches. When patching can't happen right away, reduce the exposure of the affected component and watch it for exploitation attempts. Rainforest customers see this vulnerability correlated to their own assets and prioritized by real exposure, not by score alone.
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