Synopsis
The first vulnerability (XSS) exists due to improper input validation. An authenticated attacker could create and upload a .nessus file, that may be viewed by an administrator allowing for the execution of arbitrary script code in a user's browser session. In other scenarios, XSS could occur by altering system variables from the Advanced Settings.
CVE-2018-1147 - CVSSv2 (AV:A/AC:H/Au:M/C:P/I:C/A:P/E:POC/RL:OF/RC:C/CDP:L/TD:L/CR:L/IR:L/AR:L)
The second vulnerability (Session Fixation) exists due to insufficient session management. An authenticated attacker could maintain system access after a password change due to session fixation.
CVE-2018-1148 - CVSSv2 (AV:N/AC:M/Au:S/C:N/I:P/A:N/E:POC/RL:OF/RC:C/CDP:L/TD:M/CR:ND/IR:ND/AR:ND)
Solution
Tenable has released Nessus version 7.1.0 to address these vulnerabilities. The installation files can be obtained from the Tenable Downloads Portal (https://www.tenable.com/downloads/nessus)This page contains information regarding security vulnerabilities that may impact Tenable's products. This may include issues specific to our software, or due to the use of third-party libraries within our software. Tenable strongly encourages users to ensure that they upgrade or apply relevant patches in a timely manner.
Tenable takes product security very seriously. If you believe you have found a vulnerability in one of our products, we ask that you please work with us to quickly resolve it in order to protect customers. Tenable believes in responding quickly to such reports, maintaining communication with researchers, and providing a solution in short order.
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