SB2021032634 - Multiple vulnerabilities in Nim programming languag

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Main Vulnerability Database SB2021032634

SB2021032634 - Multiple vulnerabilities in Nim programming languag

Published: March 26, 2021 Updated: April 29, 2021

Security Bulletin ID SB2021032634
Severity
High
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Code Injection (CVE-ID: CVE-2021-21372)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation in Nimble doCmd when processing entries in the packages.json package. A remote attacker can create a specially crafted entry in the packages.json file, trick the victim into loading the malicious package file and execute arbitrary code on the system.



2) Cleartext transmission of sensitive information (CVE-ID: CVE-2021-21373)

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to "nimble refresh" tries to fetch a list of Nimble packages over HTTP connection in case HTTPS connection fails. A remote attacker can perform MitM attack and deliver a modified package list containing malicious software packages


3) Improper Certificate Validation (CVE-ID: CVE-2021-21374)

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to "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. A remote attacker can perform MitM attack and deliver a modified package list containing malicious software packages


Remediation

Install update from vendor's website.

References