CVE-2018-7169

CVE-2018-7169

Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.

An issue was discovered in shadow 4.5. newgidmap (in shadow-utils) is setuid and allows an unprivileged user to be placed in a user namespace where setgroups(2) is permitted. This allows an attacker to remove themselves from a supplementary group, which may allow access to certain filesystem paths if the administrator has used "group blacklisting" (e.g., chmod g-rwx) to restrict access to paths. This flaw effectively reverts a security feature in the kernel (in particular, the /proc/self/setgroups knob) to prevent this sort of privilege escalation.

CVSS 5.3 · Moyenne · EPSS 1,6% · Correctif disponible

Publication

2018-02-15T19:00:00.000Z

Mise à jour

2024-08-05T06:24:10.505Z

Pile logicielle: system

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