Werk #14291: NagVis: Updated to 1.9.34 (Fix security issues)

This update of NagVis fixes the following security issues:

1. Fix SSRF (triggerable by admin users)

An administrative user with access to the global options, could perform a server-side request forgery.

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:L (8.2)

1. Fix arbitrary file read

An authenticated attacker can read arbitrary files with the permissions of the web server user.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L (9.1)

1. Fix type juggling vulnerability in cookie hash processing

An attacker could bypass the authentication and gain access to the NagVis component of checkmk.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N (3.7)

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