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CVE-2021-21373

Nimble falls back to insecure http url when fetching packages

Published: Mar 26, 2021Updated: Nov 21, 2024 Sources: CVE List NVDCWE-348
7.5HIGH
NVD MITRE
EPSS Score
1.2%
Top 36.3%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
No Fix 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 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.

No summary for this CVE yet.

CVSS Vector Breakdown

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

CWE-348CWE-295

Affected Products

nim-lang
oss-projectaka nim
nimLibrary
OSS Libraries / generic-library
securityLibrary
OSS Libraries / generic-library

Exploitability

1 exploit source identified

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

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Collection
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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-8w52-r35x-rgp8
github.com

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