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Bug 190228 - Use -z relro flag to link C++ code
Use -z relro flag to link C++ code
Status: CLOSED WONTFIX
Product: 389
Classification: Community
Component: Directory Server (Show other bugs)
1.0
All Linux
medium Severity medium
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Assigned To: Rich Megginson
Chandrasekar Kannan
:
Depends On:
Blocks: 152373 249650
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Reported: 2006-04-28 18:02 EDT by Rich Megginson
Modified: 2015-01-04 18:20 EST (History)
1 user (show)

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Doc Type: Bug Fix
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Last Closed: 2008-03-03 09:48:04 EST
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Description Rich Megginson 2006-04-28 18:02:02 EDT 
We don't have much C++ code, but we should use this:

Those maintainers with C++ code which is security relevant (i.e., those programs
which are exposed to network traffic or run SUID/SGID):

please make sure the binaries and DSOs are now built with -Wl,-z,relro on the
command line when linking.  The current FC5 toolchain finally supports moving
the virtual function table into the relro sections. I.e., the function pointers
cannot be overwritten.  vtables are a big vulnerability of C++ code.

-- 
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖
Comment 2 Rich Megginson 2008-02-27 22:47:00 EST 
We don't really set flags like this in our code any more - this is set by the
build system.
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