CVE-2013-3870 Use after free in n/a

Critical 9.3 Published 11 Sep 2013 Updated 6 Aug 2024

Remote attackers can execute arbitrary code by sending emails with nested S/MIME certificates, requiring user interaction to open the message.

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-2013-3870?

CVE-2013-3870 is a critical use after free vulnerability in Microsoft Outlook, published on 11 Sep 2013. 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

Double free vulnerability in Microsoft Outlook 2007 SP3 and 2010 SP1 and SP2 allows remote attackers to execute arbitrary code by including many nested S/MIME certificates in an e-mail message, aka "Message Certificate Vulnerability."

Weakness: CWE-399

Which versions are affected by CVE-2013-3870?

It affects 1 product.

Products include Microsoft Outlook.

How do I fix CVE-2013-3870?

No fix has been published for CVE-2013-3870 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2013-3870 being exploited?

There is no known exploitation of CVE-2013-3870 in the wild and no public exploit code.

All Microsoft Outlook vulnerabilities

Sources

Also known as GHSA-m4gr-fj9h-9vrx.