Bug 1951717 (CVE-2021-21374) - CVE-2021-21374 nim: Improper verification of the SSL/TLS certificate
Summary: CVE-2021-21374 nim: Improper verification of the SSL/TLS certificate
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-21374
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1951718
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-04-20 19:25 UTC by Pedro Sampaio
Modified: 2021-04-20 22:46 UTC (History)
1 user (show)

Fixed In Version:
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Last Closed: 2021-04-20 22:46:44 UTC

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Description Pedro Sampaio 2021-04-20 19:25:32 UTC 
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.

https://consensys.net/diligence/vulnerabilities/nim-insecure-ssl-tls-defaults-remote-code-execution/
https://github.com/nim-lang/Nim/pull/16940
https://github.com/nim-lang/nimble/blob/master/changelog.markdown#0130
https://github.com/nim-lang/security/security/advisories/GHSA-c2wm-v66h-xhxx
Comment 1 Pedro Sampaio 2021-04-20 19:25:58 UTC 
Created nim tracking bugs for this issue:

Affects: fedora-all [bug 1951718]
Comment 2 Product Security DevOps Team 2021-04-20 22:46:44 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
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