CVE-2017-18085 Cross-site scripting in Confluence

Medium 6.1 Published Updated

Remote attackers can inject arbitrary HTML or JavaScript via the key parameter in the viewdefaultdecorator resource, potentially leading to session hijacking or malicious actions.

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-2017-18085?

CVE-2017-18085 is a medium-severity cross-site scripting vulnerability in Atlassian Confluence, published on 2 Feb 2018. 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 viewdefaultdecorator resource in Atlassian Confluence Server before version 6.6.1 allows remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability through the key parameter.

Weakness: CWE-79

Which versions are affected by CVE-2017-18085?

It affects 1 product.

Products include Atlassian Confluence.

How do I fix CVE-2017-18085?

No fix has been published for CVE-2017-18085 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-2017-18085 being exploited?

There is no known exploitation of CVE-2017-18085 in the wild and no public exploit code.

Sources

Also known as GHSA-fg2m-9wqv-gw3x.

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