CVE-2020-13586 Memory corruption in Softmaker

High 8.8 Published Updated

A heap buffer overflow in SoftMaker PlanMaker allows attackers to execute arbitrary code via a specially crafted Excel file.

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-2020-13586?

CVE-2020-13586 is a high-severity memory corruption vulnerability in Softmaker, published on 4 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 memory corruption vulnerability exists in the Excel Document SST Record 0x00fc functionality of SoftMaker Software GmbH SoftMaker Office PlanMaker 2021 (Revision 1014). A specially crafted malformed file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

Weakness: CWE-787, CWE-122

Which versions are affected by CVE-2020-13586?

It affects 1 product.

Products include Softmaker Planmaker 2021.

How do I fix CVE-2020-13586?

No fix has been published for CVE-2020-13586 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-2020-13586 being exploited?

There is no known exploitation of CVE-2020-13586 in the wild and no public exploit code.

Sources

Also known as GHSA-rcvq-ww93-m6mr.

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