Microsoft KB Archive/168574

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BUG: SetEntriesInAcl May Produce Undesired Results

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Q168574

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The information in this article applies to:


 * Microsoft Win32 Application Programming Interface (API), used with:
 * the operating system: Microsoft Windows NT, versions 3.51, 4.0

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SYMPTOMS
As described in the Win32 Programmer's Reference, the SetEntriesInAcl function creates a new access-control list (ACL) by merging new access- control or audit-control information into an existing ACL.

When you perform this merge operation on a container object ACL, SetEntriesInAcl occasionally discards inheritance flags. You will notice this by closely examining the object ACL before and after calling SetEntriesInAcl.

CAUSE
When you merge like entries, SetEntriesInAcl often ignores dissenting inherit flags.

RESOLUTION
If an application needs to modify ACL information and needs to produce reliable results on any version of Windows NT 4.0 prior to Service Pack 3, you should use the APIs documented in the Win32 Programmer's Reference under the section titled "Low-Level Access Control Functions".

STATUS
Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article.

Additional query words: winnt

Keywords : kbAccCtrl kbAPI kbKernBase kbSecurity kbDSupport kbGrpDSKernBase

Issue type : kbbug

Technology : kbAudDeveloper kbWin32sSearch kbWin32API