CVE-2021-3840 Antilles Dependency Confusion Vulnerability
Attackers can execute remote code during installation by publishing malicious packages with names matching private dependencies to public repositories.
- 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-2021-3840?
CVE-2021-3840 is a high-severity vulnerability in Antilles, published on 12 Nov 2021. 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
A dependency confusion vulnerability was reported in the Antilles open-source software prior to version 1.0.1 that could allow for remote code execution during installation due to a package listed in requirements.txt not existing in the public package index (PyPi). MITRE classifies this weakness as an Uncontrolled Search Path Element (CWE-427) in which a private package dependency may be replaced by an unauthorized package of the same name published to a well-known public repository such as PyPi. The configuration has been updated to only install components built by Antilles, removing all other public package indexes. Additionally, the antilles-tools dependency has been published to PyPi.
Weakness: CWE-427
Which versions are affected by CVE-2021-3840?
3 open source packages ship an affected version, including antilles-tools. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
antilles-tools PyPI | All versions | 1.0.1 |
antilles-tools PyPI | All versions | 1.0.1 |
antilles-tools PyPI | All versions | 1.0.1 |
Products include Lenovo Antilles.
How do I fix CVE-2021-3840?
Upgrade antilles-tools to 1.0.1 or later.
Is CVE-2021-3840 being exploited?
There is no known exploitation of CVE-2021-3840 in the wild and no public exploit code.
Sources
Also known as GHSA-hgc3-hp6x-wpgx, PYSEC-2021-840.