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CVE-2021-21372

Date: March 26, 2021

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.

Language: Go

Severity Score

Related Resources (8)

https://github.com/nim-lang/nimble/blob/master/changelog.markdown#0130
https://security-tracker.debian.org/tracker/CVE-2021-21372
https://consensys.net/diligence/vulnerabilities/nim-insecure-ssl-tls-defaults-remote-code-execution/
https://nvd.nist.gov/vuln/detail/CVE-2021-21372
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-21372
https://github.com/nim-lang/nimble/commit/7bd63d504a4157b8ed61a51af47fb086ee818c37
https://github.com/nim-lang/security/security/advisories/GHSA-rg9f-w24h-962p
https://www.mend.io/vulnerability-database/CVE-2021-21372

Severity Score

Weakness Type (CWE)

Improper Input Validation

CWE-20

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CWE-74

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CWE-78

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): CHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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