CVE-2021-21373CWE-348

Nimble falls back to insecure http url when fetching packages

High · published March 26, 2021

CVSS v3.1
7.5
EPSS
1%
Percentile
66.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:L
CVSS v4.0
Not supplied
EPSS
0.01155 · 66.7th percentile
Weakness
CWE-348 · Use of Less Trusted Source
Published
2021-03-26T21:25Z
EPSS history
Timeline
  • 26 MAR 21:25Z
    Nimble falls back to insecure http url when fetching packages
    cvelistv5