CVE-2020-11880 Path traversal in n/a

Medium 6.5 Published 17 Apr 2020 Updated 4 Aug 2024

Attackers can use malicious mailto links to silently attach local files to emails in KMail, leading to unauthorized data disclosure.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2020-11880?

CVE-2020-11880 is a medium-severity path traversal vulnerability in n/a, published on 17 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in KDE KMail before 19.12.3. By using the proprietary (non-RFC6068) "mailto?attach=..." parameter, a website (or other source of mailto links) can make KMail attach local files to a composed email message without showing a warning to the user, as demonstrated by an attach=.bash_history value.

Which versions are affected by CVE-2020-11880?

It affects 1 product.

Products include Kde Kmail.

How do I fix CVE-2020-11880?

Upgrade to a fixed version.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2020-11880 being exploited?

There is no known exploitation of CVE-2020-11880 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2020-11880, GHSA-76gc-v974-87g9, UBUNTU-CVE-2020-11880.