Threats Tagged 'cve-2023-4091'
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Threats Tagged 'cve-2023-4091'
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A vulnerability was discovered in Samba, where the flaw allows SMB clients to truncate files, even with read-only permissions when the Samba VFS module "acl_xattr" is configured with "acl_xattr:ignore system acls = yes". The SMB protocol allows opening files when the client requests read-only access but then implicitly truncates the opened file to 0 bytes if the client specifies a separate OVERWRITE create disposition request. The issue arises in configurations that bypass kernel file system permissions checks, relying solely on Samba's permissions. Join the discussion | CVE Database V5 | 11/03/2023, 07:56:35 UTC Added: 11/20/2025, 18:33:15 UTC |
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