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CVE-2021-21374

Nimble fails to validate certificates due to insecure httpClient defaults

Published: Mar 26, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-348
8.1HIGH
NVD MITRE
EPSS Score
1.0%
Top 39.4%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:CC:LI:HA:L
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:HIntegrity
High
A:LAvailability
Low
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Weaknesses

CWE-348CWE-349CWE-599CWE-295

Affected Products

nim-lang
oss-projectaka nim
securityLibrary
OSS Libraries / generic-library
nimLibrary
OSS Libraries / generic-library
Nim Lang Team
oss-projectaka nim language, nimble, nim
NimMixed
DevTools & CI / build-test-tools
NimbleMixed
DevTools & CI / build-test-tools

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://consensys.net/diligence/vulnerabilities/nim-insecure-ssl-tls-defaults-remote-code-execution/
consensys.net
https://github.com/nim-lang/nimble/blob/master/changelog.markdown#0130
github.com
https://github.com/nim-lang/security/security/advisories/GHSA-c2wm-v66h-xhxx
github.com
and 4 more references View all →

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