CVE-2021-3193: 
Nagios XI vulnerability analysis and mitigation

CVE-2021-3193 is a critical security vulnerability discovered in the Nagios Docker Config Wizard before version 1.1.2, as used in Nagios XI through version 5.7. The vulnerability was disclosed on January 26, 2021. The issue allows an unauthenticated attacker to execute remote code as the apache user due to improper access and command validation (NVD).

The vulnerability has received a CVSS v3.1 base score of 9.8 (CRITICAL) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H, indicating network accessibility, low attack complexity, no privileges required, and high impact on confidentiality, integrity, and availability (NVD).

If exploited, this vulnerability allows attackers to execute arbitrary code with apache user privileges on affected systems. The high CVSS score indicates severe potential impacts on system confidentiality, integrity, and availability (NVD).

The vulnerability is particularly dangerous as it requires no authentication and can be exploited remotely with low attack complexity. No user interaction is needed for exploitation (NVD).

Users should upgrade to Nagios Docker Config Wizard version 1.1.2 or later, or Nagios XI versions after 5.7.0 to address this vulnerability. The fix has been implemented in subsequent releases (NVD).