CVE-2018-19620 Showdoc Unauthenticated Access

Medium 4.3 Published Updated

Remote attackers can modify other users' notes by manipulating the page_id parameter, requiring access to the ShowDoc web application.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2018-19620?

CVE-2018-19620 is a medium-severity missing authorization vulnerability in n/a, published on 28 Nov 2018. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

ShowDoc 2.4.1 allows remote attackers to edit other users' notes by navigating with a modified page_id.

Weakness: CWE-425

Which versions are affected by CVE-2018-19620?

2 open source packages ship an affected version, including showdoc/showdoc. It affects 1 product.

PackageAffectedFixed in
showdoc/showdoc PackagistAll versions2.4.2
showdoc/showdoc PackagistAll versions2.4.2

Products include Showdoc Showdoc.

How do I fix CVE-2018-19620?

Upgrade showdoc/showdoc to 2.4.2 or later.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2018-19620 being exploited?

There is no known exploitation of CVE-2018-19620 in the wild and no public exploit code.

Sources

Also known as GHSA-pfrc-5hhq-6hvr.

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