Created
March 30, 2024 14:49
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(.venv) oberstet@intel-nuci7:~$ uname -a | |
Linux intel-nuci7 5.15.0-101-generic #111-Ubuntu SMP Tue Mar 5 20:16:58 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux | |
(.venv) oberstet@intel-nuci7:~$ lsb_release -a | |
No LSB modules are available. | |
Distributor ID: Ubuntu | |
Description: Ubuntu 22.04.4 LTS | |
Release: 22.04 | |
Codename: jammy | |
(.venv) oberstet@intel-nuci7:~$ cat ~/Downloads/detect_sh.bin | |
#! /bin/bash | |
set -eu | |
# find path to liblzma used by sshd | |
path="$(ldd $(which sshd) | grep liblzma | grep -o '/[^ ]*')" | |
# does it even exist? | |
if [ "$path" == "" ] | |
then | |
echo probably not vulnerable | |
exit | |
fi | |
# check for function signature | |
if hexdump -ve '1/1 "%.2x"' "$path" | grep -q f30f1efa554889f54c89ce5389fb81e7000000804883ec28488954241848894c2410 | |
then | |
echo probably vulnerable | |
else | |
echo probably not vulnerable | |
fi | |
(.venv) oberstet@intel-nuci7:~$ chmod +x ~/Downloads/detect_sh.bin | |
(.venv) oberstet@intel-nuci7:~$ ~/Downloads/detect_sh.bin | |
probably not vulnerable | |
(.venv) oberstet@intel-nuci7:~$ |
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