CVE Vulnerability

CVE-2021-21373

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 by default. In case of error it falls back to a non-TLS URL http://irclogs.nim-lang.org/packages.json. 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.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

5.9 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/nim-lang/nimble/blob/master/changelog.markdown#0130 Release Notes Third Party Advisory
https://github.com/nim-lang/security/security/advisories/GHSA-8w52-r35x-rgp8 Third Party Advisory
https://consensys.net/diligence/vulnerabilities/nim-insecure-ssl-tls-defaults-remote-code-execution/ Exploit Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:nim-lang:nim:*:*:*:*:*:*:*:*
cpe:2.3:a:nim-lang:nim:*:*:*:*:*:*:*:*
Information

Published : 2021-03-26 10:15

Updated : 2021-03-31 03:52

NVD link : CVE-2021-21373

Mitre link : CVE-2021-21373

Products Affected
No products.
CWE
CWE-295

Improper Certificate Validation