mirror of
https://github.com/linuxboot/heads.git
synced 2025-03-14 16:26:51 +00:00
1fb37f01a3
repro
user@heads-t480:~/heads/blobs/xx80$ git status
On branch poc_t480
nothing to commit, working tree clean
user@heads-t480:~/heads/blobs/xx80$ cat hashes.txt
d3af2dfbf128bcddfc8c5810a11478697312e5701668f719f80f3f6322db5642 gbe.bin
f2f6d5fb0a5e02964b494862032fd93f1f88e2febd9904b936083600645c7fdf ifd.bin
1990b42df67ba70292f4f6e2660efb909917452dcb9bd4b65ea2f86402cfa16b me.bin
user@heads-t480:~/heads/blobs/xx80$ cat hashes.txt | awk -F " " {'print $1'} | while read hash; grep $hash README; done
bash: syntax error near unexpected token `done'
user@heads-t480:~/heads/blobs/xx80$ cat hashes.txt | awk -F " " {'print $1'} | while read hash; do grep $hash README; done
f2f6d5fb0a5e02964b494862032fd93f1f88e2febd9904b936083600645c7fdf ifd.bin
1990b42df67ba70292f4f6e2660efb909917452dcb9bd4b65ea2f86402cfa16b me.bin
user@heads-t480:~/heads/blobs/xx80$ vim README
user@heads-t480:~/heads/blobs/xx80$ vim README
user@heads-t480:~/heads/blobs/xx80$ cat hashes.txt | awk -F " " {'print $1'} | while read hash; do grep $hash README; done
d3af2dfbf128bcddfc8c5810a11478697312e5701668f719f80f3f6322db5642 gbe.bin
f2f6d5fb0a5e02964b494862032fd93f1f88e2febd9904b936083600645c7fdf ifd.bin
1990b42df67ba70292f4f6e2660efb909917452dcb9bd4b65ea2f86402cfa16b me.bin
user@heads-t480:~/heads/blobs/xx80$ sha256sum -c hashes.txt
gbe.bin: OK
ifd.bin: OK
me.bin: OK
user@heads-t480:~/heads/blobs/xx80$ cat hashes.txt | awk -F " " {'print $1'} | while read hash; do grep $hash README; done
d3af2dfbf128bcddfc8c5810a11478697312e5701668f719f80f3f6322db5642 gbe.bin
f2f6d5fb0a5e02964b494862032fd93f1f88e2febd9904b936083600645c7fdf ifd.bin
1990b42df67ba70292f4f6e2660efb909917452dcb9bd4b65ea2f86402cfa16b me.bin
user@heads-t480:~/heads/blobs/xx80$ cat .gitignore
me.bin
user@heads-t480:~/heads/blobs/xx80$ git status
Signed-off-by: Thierry Laurion <insurgo@riseup.net>
31 lines
1.4 KiB
Plaintext
31 lines
1.4 KiB
Plaintext
The ME blobs dumped in this directory come from the following link: https://dl.dell.com/FOLDER04573471M/1/Inspiron_5468_1.3.0.exe
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This provides ME version 11.6.0.1126. In this version CVE-2017-5705 has not yet been fixed.
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See https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00086.html
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Therefore, Bootguard can be disabled by deguard with a patched ME.
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1.0.0:Automatically extract, neuter and deguard me.bin
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download_clean_me.sh : Downloads vulnerable ME from Dell verify checksum, extract ME, neuters ME, relocate and trim it, then apply deguard patch and place it into me.bin
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sha256sum:
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1990b42df67ba70292f4f6e2660efb909917452dcb9bd4b65ea2f86402cfa16b me.bin
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1.0.1: Extract blobs from original rom:
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extract.sh: takes backup, unlocks ifd, apply me_cleaner to neuter, relocate, trim and deguard it, modify BIOS and ME region of IFD and place output files into this dir.
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sha256sum: will vary depending of IFD and ME extracted where IFD regions of BIOS and ME should be consistent.
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1.1: More blobs
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--------------------
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ifd.bin was extracted from a T480 from an external flashrom backup.
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sha256sum:
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f2f6d5fb0a5e02964b494862032fd93f1f88e2febd9904b936083600645c7fdf ifd.bin
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sha256sum:
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d3af2dfbf128bcddfc8c5810a11478697312e5701668f719f80f3f6322db5642 gbe.bin
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------------------------
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Notes: as specified in first link, this ME can be deployed to:
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T480 and T480s
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