CVE-2020-14983 Memory corruption in n/a
A buffer overflow in the Chocolate Doom and Crispy Doom servers allows remote attackers to overwrite the stack, potentially leading to code execution or crashes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-14983?
CVE-2020-14983 is a critical memory corruption vulnerability in Opensuse Backports, published on 22 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The server in Chocolate Doom 3.0.0 and Crispy Doom 5.8.0 doesn't validate the user-controlled num_players value, leading to a buffer overflow. A malicious user can overwrite the server's stack.
Weakness: CWE-120
Which versions are affected by CVE-2020-14983?
It affects 4 products.
Linux distribution packages (3)
chocolate-doom SUSE:Package Hub 15 SP1 | All versions | 3.0.1-bp151.4.3.1 |
chocolate-doom openSUSE:Leap 15.1 | All versions | 3.0.1-lp151.3.3.1 |
chocolate-doom openSUSE:Leap 15.2 | All versions | 3.0.1-lp152.4.3.1 |
Products include Chocolate-Doom Chocolate Doom, Chocolate-Doom Crispy Doom, Opensuse Backports, Opensuse Leap.
How do I fix CVE-2020-14983?
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-2020-14983 being exploited?
There is no known exploitation of CVE-2020-14983 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2020-14983, GHSA-cvfr-xv48-v96r, MGASA-2020-0302, UBUNTU-CVE-2020-14983, openSUSE-SU-2020:0928-1, openSUSE-SU-2020:0939-1 and 2 more.