Vulnerability CVE-2021-21372

Vulnerability Name:

CVE-2021-21372 (CCN-198945)

Assigned:

2020-12-22

Published:

2021-03-26

Updated:

2022-10-24

Summary:

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.

CVSS v3 Severity:

8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
7.7 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

8.3 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H)
7.2 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): High Privileges Required (PR): None User Interaction (UI): Required
Scope:	Scope (S): Changed
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

CVSS v2 Severity:

6.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Medium Authentication (Au): None
Impact Metrics:	Confidentiality (C): Partial Integrity (I): Partial Availibility (A): Partial

7.1 High (CCN CVSS v2 Vector: AV:N/AC:H/Au:S/C:C/I:C/A:C)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): High Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): Complete

Vulnerability Type:

CWE-78

Vulnerability Consequences:

Gain Access

References:

Source: MITRE
Type: CNA
CVE-2021-21372

Source: MISC
Type: Exploit, Third Party Advisory
https://consensys.net/diligence/vulnerabilities/nim-insecure-ssl-tls-defaults-remote-code-execution/

Source: XF
Type: UNKNOWN
nimlang-cve202121372-code-exec(198945)

Source: MISC
Type: Release Notes, Third Party Advisory
https://github.com/nim-lang/nimble/blob/master/changelog.markdown#0130

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/nim-lang/nimble/commit/7bd63d504a4157b8ed61a51af47fb086ee818c37

Source: CCN
Type: Nimble GIT Repository
Nimble arbitrary code execution for specially crafted package metadata

Source: CONFIRM
Type: Third Party Advisory
https://github.com/nim-lang/security/security/advisories/GHSA-rg9f-w24h-962p

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2021-21372

Vulnerable Configuration:

Configuration 1:

cpe:/a:nim-lang:nim:*:*:*:*:*:*:*:* (Version < 1.2.10)

OR cpe:/a:nim-lang:nim:*:*:*:*:*:*:*:* (Version >= 1.4.0 and < 1.4.4)

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.opensuse.security:def:428	P	Security update for nim (Important)	2022-08-27
oval:org.opensuse.security:def:113032	P	nim-1.2.12-1.7 on GA media (Moderate)	2022-01-17
oval:org.opensuse.security:def:106475	P	nim-1.2.12-1.7 on GA media (Moderate)	2021-10-01
oval:org.opensuse.security:def:11204	P	Security update for nim (Moderate)	2021-04-29
oval:org.opensuse.security:def:96472	P	Security update for nim (Moderate)	2021-04-29
oval:org.opensuse.security:def:103162	P	Security update for nim (Moderate)	2021-04-29
oval:org.opensuse.security:def:109819	P	Security update for nim (Moderate)	2021-04-29
oval:org.opensuse.security:def:111345	P	Security update for nim (Moderate)	2021-04-25

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