CVE-2021-21374

Nimble fails to validate certificates due to insecure httpClient defaults

State: Published
Severity: 8.1 High
Published: Mar 26, 2021
Updated: Aug 3, 2024
Reserved: Dec 22, 2020

Description

Nimble is a package manager for the Nim programming language. In Nim release versions before versions 1.2.10 and 1.4.4, "nimble refresh" fetches a list of Nimble packages over HTTPS without full verification of the SSL/TLS certificate due to the default setting of httpClient. An attacker able to perform MitM can deliver a modified package list containing malicious software packages. If the packages are installed and used the attack escalates to untrusted code execution.

Scores

CVSS	Score	Vector	Source
3.1	8.1 High	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:L	GitHub_M

Weaknesses

CWE-348 Use of Less Trusted Source
CWE-599 Missing Validation of OpenSSL Certificate
CWE-349 Acceptance of Extraneous Untrusted Data With Trusted Data

Affected Products

Product	Versions
securitynim-lang	< 1.2.10Affected >= 1.4.0, < 1.4.4Affected

References

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