CVE-2015-5215 Cross-site scripting in Ipsilon

Medium 6.1 Published Updated

Remote attackers can execute arbitrary scripts via XSS in Ipsilon IdP due to disabled auto-escaping in Jinja templates.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2015-5215?

CVE-2015-5215 is a medium-severity cross-site scripting vulnerability in Ipsilon, published on 17 Feb 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

The default configuration of the Jinja templating engine used in the Identity Provider (IdP) server in Ipsilon 0.1.0 before 1.0.1 does not enable auto-escaping, which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via template variables. NOTE: This may be a duplicate of CVE-2015-5216. Moreover, the Jinja development team does not enable auto-escape by default for performance issues as explained in https://jinja.palletsprojects.com/en/master/faq/#why-is-autoescaping-not-the-default.

Weakness: CWE-79

Which versions are affected by CVE-2015-5215?

It affects 1 product.

Products include Ipsilon-Project Ipsilon.

How do I fix CVE-2015-5215?

No fix has been published for CVE-2015-5215 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2015-5215 being exploited?

There is no known exploitation of CVE-2015-5215 in the wild and no public exploit code.

Sources

Also known as GHSA-m72r-m3rm-547r.

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