CVE-2009-0563 Microsoft Office Buffer Overflow

Exploited in the wild High 7.8 Published Updated

Remote attackers can execute arbitrary code by tricking users into opening a malicious Word document with a crafted tag.

Exploited in the wild
Since 8 Jun 2022
Login needed
Not needed
Attackable
Local or same network only
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2009-0563?

CVE-2009-0563 is a high-severity memory corruption vulnerability in Microsoft Office, published on 10 Jun 2009. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Stack-based buffer overflow in Microsoft Office Word 2002 SP3, 2003 SP3, and 2007 SP1 and SP2; Microsoft Office for Mac 2004 and 2008; Open XML File Format Converter for Mac; Microsoft Office Word Viewer 2003 SP3; Microsoft Office Word Viewer; and Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP1 and SP2 allows remote attackers to execute arbitrary code via a Word document with a crafted tag containing an invalid length field, aka "Word Buffer Overflow Vulnerability."

Weakness: CWE-787

Which versions are affected by CVE-2009-0563?

It affects 4 products.

Products include Microsoft Office, Microsoft Office Compatibility Pack, Microsoft Office Word Viewer, Microsoft Open Xml File Format Converter.

How do I fix CVE-2009-0563?

No fix has been published for CVE-2009-0563 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 22 Jun 2022.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2009-0563 being exploited?

Yes. Attackers have exploited CVE-2009-0563 in the wild since at least 8 Jun 2022.

All Microsoft Office vulnerabilities

Sources

Also known as GHSA-f5c7-c9q4-9h6j.

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