CVE-2006-5877 Denial of service in n/a

High 7.8 Published 23 Feb 2007 Updated 7 Aug 2024

Remote attackers can crash the Enigmail extension in Thunderbird by sending emails with large encrypted attachments, requiring user interaction to open the email.

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: Available

What is CVE-2006-5877?

CVE-2006-5877 is a high-severity denial of service vulnerability in n/a, published on 23 Feb 2007. 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

The enigmail extension before 0.94.2 does not properly handle large, encrypted file e-mail attachments, which allows remote attackers to cause a denial of service (crash), as demonstrated with Mozilla Thunderbird.

Which versions are affected by CVE-2006-5877?

It affects 1 product.

Products include Enigmail Enigmail.

How do I fix CVE-2006-5877?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2006-5877 being exploited?

There is no known exploitation of CVE-2006-5877 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2006-5877, GHSA-988q-v857-cfw9.