Vulnerability CVE-2021-21372
Published: 2021-03-26   Modified: 2021-03-27

Description:
Nimble is a package manager for the Nim programming language. In Nim release version before versions 1.2.10 and 1.4.4, Nimble doCmd is used in different places and can be leveraged to execute arbitrary commands. An attacker can craft a malicious entry in the packages.json package list to trigger code execution.

Type:

CWE-20

 (Improper Input Validation)

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.8/10
6.4/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Nim-lang -> NIM 

 References:
https://consensys.net/diligence/vulnerabilities/nim-insecure-ssl-tls-defaults-remote-code-execution/
https://github.com/nim-lang/nimble/blob/master/changelog.markdown#0130
https://github.com/nim-lang/nimble/commit/7bd63d504a4157b8ed61a51af47fb086ee818c37
https://github.com/nim-lang/security/security/advisories/GHSA-rg9f-w24h-962p
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