Created
March 30, 2024 20:49
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Run CVE-2024-3094 vulnerability check script
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- hosts: all | |
tasks: | |
- name: Run CVE-2024-3094 vulnerability check script | |
shell: | | |
set -eu | |
echo "Checking system for CVE-2024-3094 Vulnerability..." | |
echo "https://nvd.nist.gov/vuln/detail/CVE-2024-3094" | |
# find path to liblzma used by sshd | |
# adapted from https://www.openwall.com/lists/oss-security/2024/03/29/4 | |
sshd_path=$(whereis -b sshd | awk '{print $2}') | |
path=$(ldd "$sshd_path" 2>/dev/null | grep -o '/.*liblzma[^ ]*' | head -1) | |
if [ -z "$path" ]; then | |
echo | |
echo "Probably not vulnerable (liblzma not found)" | |
exit | |
fi | |
# check for function signature | |
# adapted from https://www.openwall.com/lists/oss-security/2024/03/29/4 | |
echo | |
echo "Checking for function signature in liblzma..." | |
if hexdump -ve '1/1 "%.2x"' "$path" | grep -q 'f30f1efa554889f54c89ce5389fb81e7000000804883ec28488954241848894c2410'; then | |
echo "Function signature in liblzma: VULNERABLE" | |
else | |
echo "Function signature in liblzma: OK" | |
fi | |
# check xz version | |
echo | |
echo "Checking xz version..." | |
xz_version=$(xz --version | head -n1 | awk '{print $4}') | |
if [[ "$xz_version" == "5.6.0" || "$xz_version" == "5.6.1" ]]; then | |
echo "xz version $xz_version: VULNERABLE" | |
else | |
echo "xz version $xz_version: OK" | |
fi | |
register: script_output | |
- debug: | |
var: script_output.stdout_lines |
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