CVEvulnerability

CVE-2021-21374

8.1 HIGH Published 2021-03-26 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-03-26
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.1 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:L
CVSS 3.1 ([email protected])
8.1 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
6.8 MEDIUM — AV:N/AC:M/Au:N/C:P/I:P/A:P
Weaknesses
CWE-295, CWE-348, CWE-349, CWE-599

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.

Affected configurations

• nim-lang nim (< 1.2.10) • nim-lang nim (>= 1.4.0 < 1.4.4)

Related

Weakness · CWE (4)

  • CWE-295 Improper Certificate Validation weakness
  • CWE-348 Use of Less Trusted Source weakness
  • CWE-349 Acceptance of Extraneous Untrusted Data With Trusted Data weakness
  • CWE-599 Missing Validation of OpenSSL Certificate weakness

References