github.com/moby/sys/user has a possible DoS via unbounded parsing of user and group database files

[ Description ]Official description

The `github.com/moby/sys/user` package provides Go utilities for parsing and looking up entries in Unix-style user and group database files. Versions before 0.4.1 do not sufficiently limit entries when parsing `/etc/passwd`- or `/etc/group`-style files, allowing an attacker who can supply a specially crafted file to cause excessive memory consumption and potentially terminate the affected process due to an out-of-memory condition. This issue is patched in version 0.4.1. As a workaround, avoid parsing attacker-controlled user or group database files, or validate and limit untrusted input before parsing it.

[ Fixes ]Fixes and patches

• github.com/moby/sys/user 0.4.1Fixed version · GitHub Advisories · go package github.com/moby/sys/user: upgrade to 0.4.1 or later (affected <= 0.4.0)

[ Packages ]Affected open-source packages

• github.com/moby/sys/user goAffected <= 0.4.0 · fixed in 0.4.1 · GHSA-mjcv-p78q-w5fw

[ References ]References

• github.com/moby/sys/commit/85a71bbe1faa36c552a960e6a5f3d0cfb632fbbe
• github.com/moby/sys/pull/221
• github.com/moby/sys/security/advisories/GHSA-mjcv-p78q-w5fw