CVE-2020-28587 Memory corruption in Softmaker

High 8.8 Published Updated

A heap-based buffer overflow in SoftMaker Office PlanMaker allows remote code execution via a specially crafted document.

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-2020-28587?

CVE-2020-28587 is a high-severity memory corruption vulnerability in Softmaker, published on 23 Feb 2021. 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

A specially crafted document can cause the document parser to copy data from a particular record type into a static-sized buffer within an object that is smaller than the size used for the copy, which will cause a heap-based buffer overflow. An attacker can entice the victim to open a document to trigger this vulnerability. This affects SoftMaker Software GmbH SoftMaker Office PlanMaker 2021 (Revision 1014).

Weakness: CWE-787, CWE-122

Which versions are affected by CVE-2020-28587?

It affects 1 product.

Products include Softmaker Planmaker 2021.

How do I fix CVE-2020-28587?

No fix has been published for CVE-2020-28587 yet. Limit exposure of the affected software until one is available.

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

Is CVE-2020-28587 being exploited?

There is no known exploitation of CVE-2020-28587 in the wild and no public exploit code.

Sources

Also known as GHSA-wpq8-mgpj-h53w.

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