CVE-2021-21373

CVE-2021-21373 affects Nimble, the Nim package manager. The issue arises when nimble refresh fetches the package list over HTTPS but falls back to an insecure HTTP URL on error, enabling a MitM to deliver a malicious package list. If affected packages are installed, this can lead to untrusted cod...

CVE-2021-21373 Nimble falls back to insecure http url when fetching packages

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...