CVE-2011-1890 Cross-site scripting in n/a

Medium 4.3 Published Updated

Remote attackers can inject arbitrary web script or HTML into SharePoint EditForm.aspx via a post, potentially compromising user sessions.

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

What is CVE-2011-1890?

CVE-2011-1890 is a medium-severity cross-site scripting vulnerability in Microsoft Sharepoint Foundation, published on 15 Sep 2011. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Cross-site scripting (XSS) vulnerability in EditForm.aspx in Microsoft Office SharePoint Server 2010 and SharePoint Foundation 2010 allows remote attackers to inject arbitrary web script or HTML via a post, aka "Editform Script Injection Vulnerability."

Weakness: CWE-79

Which versions are affected by CVE-2011-1890?

It affects 2 products.

Products include Microsoft Sharepoint Foundation, Microsoft Sharepoint Server.

How do I fix CVE-2011-1890?

No fix has been published for CVE-2011-1890 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-2011-1890 being exploited?

There is no known exploitation of CVE-2011-1890 in the wild and no public exploit code.

All Microsoft Sharepoint Foundation vulnerabilities

Sources

Also known as GHSA-525w-x42w-vp45.

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