CVE-2018-7169 (GCVE-0-2018-7169)
Vulnerability from cvelistv5
Published
2018-02-15 19:00
Modified
2024-08-05 06:24
Severity ?
CWE
  • n/a
Summary
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.
References
Impacted products
Vendor Product Version
n/a n/a Version: n/a
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