Detection for CVE-2022-3602 - OpenSSL RCE/DOC v3.0.0 - v3.0.6

• Detects when the HTTP Server header indicates that the version of OpenSSL is vulnerable to CVE-2022-3602 (ie. v3.0.0 to v3.0.6 inclusive).
• Detects exploitation attempts in TLS v1.2.

References:

• https://www.openssl.org/news/secadv/20221101.txt
• https://github.com/fox-it/spookyssl-pcaps

This package generates the following notices:

• CVE20223602::CVE_2022_3602_Exploit_Attempt
• CVE20223602::CVE_2022_3602_Vulnerable_Server
  The notice also contains the artefact that triggered the notice within the sub field , which can assist with IR triage.

#separator \x09
#set_separator  ,
#empty_field    (empty)
#unset_field    -
#path   notice
#open   2022-11-04-11-13-50
#fields ts      uid     id.orig_h       id.orig_p       id.resp_h       id.resp_p       fuid    file_mime_type  file_desc       proto   note    msg     sub     src     dst     p       n              peer_descr      actions email_dest      suppress_for    remote_location.country_code    remote_location.region  remote_location.city    remote_location.latitude        remote_location.longitude
#types  time    string  addr    port    addr    port    string  string  string  enum    enum    string  string  addr    addr    port    count   string  set[enum]       set[string]     interval       string  string  string  double  double
1667182702.131152       CKgObk3hwP00kyaoVd      127.0.0.1       53240   127.0.0.1       80      -       -       -       tcp     CVE20223602::CVE_2022_3602_Vulnerable_Server    Potential OpenSSL CVE_2022_3602 Vulnerable server version (v3.0.0-3.0.6)       SERVER value in HTTP header = 'Apache/2.4.54 (Fedora Linux) OpenSSL/3.0.5'      127.0.0.1       127.0.0.1       80      -              -       Notice::ACTION_LOG      (empty) 3600.000000     -       -       -       -       -
1667383240.417527       CYgEWD2cUZDWalTz9h      192.168.56.2    50478   192.168.56.3    3000    -       -       -       tcp     CVE20223602::CVE_2022_3602_Exploit_Attempt      Potential OpenSSL CVE_2022_3602 exploit attempt (punycode)     ext$value = 'Permitted:\x0a  email:xn--3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2ba\x0a'        192.168.56.2    192.168.56.3    3000    -       -       Notice::ACTION_LOG      (empty) 3600.000000     -       -       -       -              -
1667390605.051174       CTKv5h4LdOlflhiM66      192.168.56.2    46590   192.168.56.3    3000    -       -       -       tcp     CVE20223602::CVE_2022_3602_Exploit_Attempt      Potential OpenSSL CVE_2022_3602 exploit attempt (punycode)     ext$value = 'Permitted:\x0a  email:xn--3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2b3B-ww4c5e180e575a65lsy2ba@example.com\x0a'    192.168.56.2    192.168.56.3    3000    -       -       Notice::ACTION_LOG      (empty) 3600.000000     -       -       -              -       -
1667393702.130181       CycBH72ljVsUydqGn5      192.168.56.2    46594   192.168.56.3    3000    -       -       -       tcp     CVE20223602::CVE_2022_3602_Exploit_Attempt      Potential OpenSSL CVE_2022_3602 exploit attempt (punycode)     ext$value = 'Permitted:\x0a  email:xn--srt@fx-it-u1g.com\x0a'   192.168.56.2    192.168.56.3    3000    -       -       Notice::ACTION_LOG             (empty) 3600.000000     -       -       -       -       -
#close  2022-11-04-11-13-50

This package can be installed with zkg using the following commands:

$ zkg refresh
$ zkg install cve-2022-3602

Corelight customers can install it by updating the CVE bundle.