![Guy Harris](/assets/img/avatar_default.png)
Change-Id: Ice2e1e2e4d94f6c9da7c651866cfa1a8ac4a31d8 Reviewed-on: https://code.wireshark.org/review/34096 Reviewed-by: Guy Harris <guy@alum.mit.edu>
147 lines
3.8 KiB
PowerShell
147 lines
3.8 KiB
PowerShell
#
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# Get-HardenFlags - Checks hardening flags on the binaries.
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#
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# Copyright 2015 Graham Bloice <graham.bloice@trihedral.com>
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#
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# Wireshark - Network traffic analyzer
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# By Gerald Combs <gerald@wireshark.org>
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# Copyright 1998 Gerald Combs
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#
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# SPDX-License-Identifier: GPL-2.0-or-later
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#requires -version 2
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# Get-HardenFlags does:
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# call the dumpbin utility to get the binary header flags
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# on all the binaries in the distribution, and then filters
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# for the NXCOMPAT and DYNAMICBASE flags.
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# This script will probably fail for the forseeable future.
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#
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# Many of our third-party libraries are compiled using MinGW-w64. Its version
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# of `ld` doesn't enable the dynamicbase, nxcompat, or high-entropy-va flags
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# by default. When you *do* pass --dynamicbase it strips the relocation
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# section of the executable:
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#
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# https://sourceware.org/bugzilla/show_bug.cgi?id=19011
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#
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# As a result, none of the distributions that produce Windows applications
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# and libraries have any sort of hardening flags enabled:
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#
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# https://mingw-w64.org/doku.php/download
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#
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<#
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.SYNOPSIS
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Checks the NXCOMPAT and DYNAMICBASE flags on all the binaries.
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.DESCRIPTION
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This script downloads and extracts third-party libraries required to compile
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Wireshark.
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.PARAMETER BinaryDir
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Specifies the directory where the binaries may be found.
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.INPUTS
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-BinaryDir Directory containing the binaries to be checked.
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.OUTPUTS
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Any binary that doesn't have the flags is written to the error stream
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.EXAMPLE
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C:\PS> .\tools\Get-HardenFlags.ps1 -BinaryDir run\RelWithDebInfo
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#>
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Param(
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[Parameter(Mandatory=$true, Position=0)]
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[String]
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$BinaryDir
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)
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# Create a list of 3rd party binaries that are not hardened
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$SoftBins = (
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"libpixmap.dll",
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"libwimp.dll",
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"libgail.dll",
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"airpcap.dll",
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"comerr32.dll",
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"k5sprt32.dll",
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"krb5_32.dll",
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"libatk-1.0-0.dll",
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"libcairo-2.dll",
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"libffi-6.dll",
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"libfontconfig-1.dll",
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"libfreetype-6.dll",
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"libgcc_s_sjlj-1.dll",
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"libgcrypt-20.dll",
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"libgdk-win32-2.0-0.dll",
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"libgdk_pixbuf-2.0-0.dll",
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"libgio-2.0-0.dll",
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"libglib-2.0-0.dll",
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"libgmodule-2.0-0.dll",
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"libgmp-10.dll",
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"libgnutls-28.dll",
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"libgobject-2.0-0.dll",
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"libgpg-error-0.dll",
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"libgtk-win32-2.0-0.dll",
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"libharfbuzz-0.dll",
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"libhogweed-2-4.dll",
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"libintl-8.dll",
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"libjasper-1.dll",
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"libjpeg-8.dll",
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"liblzma-5.dll",
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"libmaxminddb.dll",
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"libnettle-4-6.dll",
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"libp11-kit-0.dll",
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"libpango-1.0-0.dll",
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"libpangocairo-1.0-0.dll",
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"libpangoft2-1.0-0.dll",
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"libpangowin32-1.0-0.dll",
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"libpixman-1-0.dll",
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"libpng15-15.dll",
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"libtasn1-6.dll",
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"libtiff-5.dll",
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"libxml2-2.dll",
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# The x64 ones that are different
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"comerr64.dll",
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"k5sprt64.dll",
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"krb5_64.dll",
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"libgcc_s_seh-1.dll",
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"libgpg-error6-0.dll",
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"libpng16-16.dll",
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# Unfortunately the nsis uninstaller is not hardened.
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"uninstall.exe"
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)
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# CD into the bindir, allows Resolve-Path to work in relative mode.
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Push-Location $BinaryDir
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[Console]::Error.WriteLine("Checking in $BinaryDir for unhardened binaries:")
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# Retrieve the list of binaries. -Filter is quicker than -Include, but can only handle one item
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$Binaries = Get-ChildItem -Path $BinaryDir -Recurse -Include *.exe,*.dll
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# Number of "soft" binaries found
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$Count = 0;
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# Iterate over the list
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$Binaries | ForEach-Object {
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# Get the flags
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$flags = dumpbin $_ /HEADERS;
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# Check for the required flags
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$match = $flags | Select-String -Pattern "NX compatible", "Dynamic base"
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if ($match.Count -ne 2) {
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# Write-Error outputs error records, we simply want the filename
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[Console]::Error.WriteLine((Resolve-Path $_ -Relative))
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# Don't count files that won't ever be OK
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if ($SoftBins -notcontains (Split-Path $_ -Leaf)) {
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$Count++
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}
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}
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}
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exit $Count
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