
Backports de segurança do Salt para CVE-2020-11651 e CVE-2020-11652
Patches oficiais para versões anteriores podem ser solicitados em: https://www.saltstack.com/lp/request-patch-april-2020/
⚠ Patches aqui são personalizados e podem diferir dos oficiais ⚠
Os patches neste repositório abordam os seguintes CVEs:
Além disso, incluem as seguintes correções de bugs:
_minion_runner -> minion_runner. Veja: https://docs.saltstack.com/en/latest/topics/releases/3000.2.html#known-issue_find_file_and_stat -> _find_hash_and_stat. Veja https://github.com/rossengeorgiev/salt-security-backports/issues/1run_func da whitelistimport salt.utils.verifyAs correções acima estão incluídas na versão mais recente do SaltStack, especificamente v2019.2.5 e v3000.3.
O script de verificação precisa ser executado localmente em seu salt-master como root
python salt-cve-check.py
Exemplo de saída para Salt 2017.7.8:
[+] Salt version: 2017.7.8
[ ] This version of salt is vulnerable! Check results below
[+] Checking salt-master (127.0.0.1:4506) status... ONLINE
[+] Checking if vulnerable to CVE-2020-11651... YES
[+] Checking if vulnerable to CVE-2020-11652 (read_token)... YES
[+] Checking if vulnerable to CVE-2020-11652 (read)... YES
[+] Checking if vulnerable to CVE-2020-11652 (write1)... YES
[+] Checking if vulnerable to CVE-2020-11652 (write2)... YES
# locate the salt package directory (use python3 if necessary)
python -c "import imp; print(imp.find_module('salt')[1])"
# in my case: /usr/lib/python2.7/dist-packages/salt
# apply patches
# (adding -b flag will backup file before modifications at same path with .orig suffix)
# (patch can be reversed running the same command with -R flag)
patch -p2 -d /usr/lib/python2.7/dist-packages/salt < 2017.7.8_CVE-2020-11651.patch
patch -p2 -d /usr/lib/python2.7/dist-packages/salt < 2017.7.8_CVE-2020-11652.patch
# restart salt-master
systemctl restart salt-master
# or
service salt-master restart
Execute novamente o script de verificação:
user@salt # python salt-cve-check.py
[+] Salt version: 2017.7.8
[ ] This version of salt is vulnerable! Check results below
[+] Checking salt-master (127.0.0.1:4506) status... ONLINE
[+] Checking if vulnerable to CVE-2020-11651... NO
[+] Checking if vulnerable to CVE-2020-11652 (read_token)... NO
[+] Checking if vulnerable to CVE-2020-11652 (read)... NO
[+] Checking if vulnerable to CVE-2020-11652 (write1)... NO
[+] Checking if vulnerable to CVE-2020-11652 (write2)... NO