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uutils coreutils contains a vulnerability in its chroot utility when invoked with the --userspec option. After entering the attacker-influenced new root directory, the program resolves the supplied user specification via getpwnam() before dropping root privileges. On glibc-based systems, this lookup can invoke the Name Service Switch (NSS) subsystem, which may dynamically load libnss_*.so.2 shared libraries from paths within the new root. If the NEWROOT directory is writable or otherwise controllable by an attacker, they can place a malicious NSS module there and cause it to be loaded and executed while chroot is still running with root privileges. This creates a privileged code execution path and can enable escape from a containerized environment or local privilege escalation.
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What an attacker gets, and what they’ve been doing with it.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
5 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
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Every observed campaign linking this CVE to a named adversary.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.