CVE-2020-15140 Remote Code Execution in Red Discord Bot

High 8.2 Published 21 Aug 2020 Updated 4 Aug 2024

Attackers can execute arbitrary code via crafted usernames in the Trivia module, leading to system compromise and data exposure.

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

What is CVE-2020-15140?

CVE-2020-15140 is a high-severity code injection vulnerability in Cog-Creators Red-DiscordBot, published on 21 Aug 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

In Red Discord Bot before version 3.3.11, a RCE exploit has been discovered in the Trivia module: this exploit allows Discord users with specifically crafted usernames to inject code into the Trivia module's leaderboard command. By abusing this exploit, it's possible to perform destructive actions and/or access sensitive information. This critical exploit has been fixed on version 3.3.11.

Weakness: CWE-74

Which versions are affected by CVE-2020-15140?

3 open source packages ship an affected version, including red-discordbot and Red-DiscordBot. It affects 1 product.

Package	Affected	Fixed in
`red-discordbot` PyPI	All versions	`3.3.11`
`red-discordbot` PyPI	All versions	`3.3.11`
`Red-DiscordBot` PyPI	All versions	`3.3.11`

Products include Cogboard Red Discord Bot.

How do I fix CVE-2020-15140?

Upgrade red-discordbot to 3.3.11 or later.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2020-15140 being exploited?

There is no known exploitation of CVE-2020-15140 in the wild and no public exploit code.

Sources

Also known as GHSA-55j9-849x-26h4, PYSEC-2020-265.