https://bugs.exim.org/show_bug.cgi?id=2916
Bug ID: 2916
Summary: dsearch erroneously requires read permission
Product: Exim
Version: N/A
Hardware: All
OS: All
Status: NEW
Severity: bug
Priority: medium
Component: Lookups
Assignee: unallocated@???
Reporter: from-exim-bugzilla@???
CC: exim-dev@???
Further to Exim-dev Digest, Vol 216, Issue 5
I normally set directory permissions to "drwx--x--x" or "drwx--x---"; scan/exec
access without read access, but this breaks the dsearch lookup.
The comment above dsearch_open says "We open the directory to test whether it
exists and whether it is searchable", but that's not actually true, because
"readable" and "searchable" are two different things.
The dsearch_open function calls exim_opendir and then fails because the
directory lacks 'r' permission, even though when it succeeds it immediately
closes the dir fd as unneeded.
I have prepared
https://github.com/Exim/exim/pull/87 which addresses this, and
makes some related improvements. Suggestions and feedback would be much
appreciated.
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