CVE-2026-119742: Nagios Enterprises, LLC Nagios XI, инжекция

Описание

Оригинално описание

Nagios XI before 2026R2 contains an OS command injection vulnerability in the MIB upload feature where the install_mib() function in mibs.php sanitizes uploaded filenames with an incomplete character-substitution filter that omits semicolons, pipes, and non-space IFS whitespace characters before passing them to a grep command run via exec(). An authenticated administrator can upload a MIB file with a crafted filename using tab characters to bypass the deny-list and pipe to sh via a multipart POST request to mibs.php, resulting in arbitrary OS command execution as the web server user.

Засегнати продукти

• Nagios Enterprises, LLC Nagios XI: преди 2026R2

Вид слабост

• CWE-78 Инжектиране на команди към операционната система

История

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-119742
• https://nvd.nist.gov/vuln/detail/CVE-2026-119742
• https://www.nagios.com/security-disclosures/nagios-xi/2026r2/
• https://www.vulncheck.com/advisories/nagios-xi-2026r2-os-command-injection-via-mibs-php