Published: 26/03/2021 Updated: 31/03/2021

CVSS v2 Base Score: 4.3 | Impact Score: 2.9 | Exploitability Score: 8.6

CVSS v3 Base Score: 5.9 | Impact Score: 3.6 | Exploitability Score: 2.2

VMScore: 383

Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Nimble is a package manager for the Nim programming language. In Nim release versions prior to 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 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.

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nim-lang nim

Debian Bug report logs - #987272 CVE-2021-21372 CVE-2021-21373 CVE-2021-21374 Package: nim; Maintainer for nim is Federico Ceratto <federico@debianorg>; Source for nim is src:nim (PTS, buildd, popcon) Reported by: Moritz Muehlenhoff <jmm@debianorg> Date: Tue, 20 Apr 2021 18:33:01 UTC Severity: important Tags: secu ...

In Nimble before version 0130, "nimble refresh" fetches a list of Nimble packages over HTTPS by default In case of error it falls back to a non-TLS URL irclogsnim-langorg/packagesjson An attacker able to perform MitM can deliver a modified package list containing malicious software packages If the packages are installed and used the ...

CWE-295 https://consensys.net/diligence/vulnerabilities/nim-insecure-ssl-tls-defaults-remote-code-execution/https://github.com/nim-lang/nimble/blob/master/changelog.markdown#0130 https://github.com/nim-lang/security/security/advisories/GHSA-8w52-r35x-rgp8 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=987272 https://nvd.nist.gov https://security.archlinux.org/CVE-2021-21373

CVE-2021-21373

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