#VU29543 Buffer overflow in chocolate-doom - CVE-2020-14983

Vulnerability identifier: #VU29543

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-14983

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
chocolate-doom
Server applications / Game servers

Vendor: chocolate-doom

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing num_players value in Chocolate Doom. A remote attacker can pass an overly long num_players value, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

chocolate-doom: 3.0.0

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External links
https://lists.opensuse.org/opensuse-security-announce/2020-07/msg00002.html
https://github.com/chocolate-doom/chocolate-doom/issues/1293

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.