CVE-2016-5823 Use after free in n/a

Medium 5.5 Published 27 Jan 2017 Updated 6 Aug 2024

Remote attackers can cause a denial of service via a crafted ICS file due to a use-after-free vulnerability in the libical library.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2016-5823?

CVE-2016-5823 is a medium-severity use after free vulnerability in n/a, published on 27 Jan 2017. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

The icalproperty_new_clone function in libical 0.47 and 1.0 allows remote attackers to cause a denial of service (use-after-free) via a crafted ics file.

Weakness: CWE-416

Which versions are affected by CVE-2016-5823?

It affects 1 product.

Products include Libical Project Libical.

How do I fix CVE-2016-5823?

Upgrade to a fixed version.

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-2016-5823 being exploited?

There is no known exploitation of CVE-2016-5823 in the wild and no public exploit code.

Sources

Also known as GHSA-rjf8-x65h-qc3m, UBUNTU-CVE-2016-5823.