CVE-2018-20549 Memory corruption in n/a
An illegal memory write in libcaca allows attackers to cause denial of service or potentially execute arbitrary code via crafted input.
- 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-2018-20549?
CVE-2018-20549 is a high-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 28 Dec 2018. 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
There is an illegal WRITE memory access at caca/file.c (function caca_file_read) in libcaca 0.99.beta19.
Weakness: CWE-119
Which versions are affected by CVE-2018-20549?
It affects 5 products.
Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Libcaca Project Libcaca, Opensuse Leap.
How do I fix CVE-2018-20549?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2018-20549 being exploited?
There is no known exploitation of CVE-2018-20549 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2018-20549, GHSA-9r44-h34p-vx3x, UBUNTU-CVE-2018-20549.