CVE-2018-0557 Cross-site scripting in Cybozu Mailwise

Medium 6.1 Published Updated

Remote attackers can inject arbitrary web script or HTML into the E-mail Details Screen, potentially compromising user sessions.

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-2018-0557?

CVE-2018-0557 is a medium-severity cross-site scripting vulnerability in Cybozu, Inc. Cybozu Mailwise, published on 26 Jun 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

Stored cross-site scripting vulnerability in Cybozu Mailwise 5.0.0 to 5.4.1 allows remote attackers to inject arbitrary web script or HTML 'E-mail Details Screen' via unspecified vectors.

Weakness: CWE-79

Which versions are affected by CVE-2018-0557?

It affects 1 product.

Products include Cybozu Mailwise.

How do I fix CVE-2018-0557?

No fix has been published for CVE-2018-0557 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-2018-0557 being exploited?

There is no known exploitation of CVE-2018-0557 in the wild and no public exploit code.

Sources

Also known as GHSA-xfj9-jcw6-8q5m.

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