A vulnerability (CVE-2021-3156) in sudo, a powerful and near-ubiquitous open-source utility used on major Linux and Unix-like operating systems, could allow any unprivileged local user to gain root privileges on a vulnerable host (without authentication). “This vulnerability is perhaps the most significant sudo vulnerability in recent memory (both in terms of scope and impact) and has been hiding in plain sight for nearly 10 years,” said Mehul Revankar, Vice President Product Management and Engineering, Qualys, VMDR, and noted that there are likely to be millions of assets susceptible to it.

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