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Advisories

rsync < 3.5.0 Filter Rule Bypass via --filter Merge Directive

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severity
medium
date
Affecting

  • rsync <= 3.4.4

CWE
  • CWE-863 Incorrect Authorization
CVSS
6.9
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Credit
revampstudio
Description
rsync before 3.5.0 contains a filter rule bypass vulnerability that allows authenticated clients to override module-level filter restrictions by supplying malicious --filter merge file directives. Attackers can inject client-side merge file directives during filter evaluation to introduce rules that supersede daemon module-level restrictions, gaining access to files the module filter was intended to exclude.

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