Auth bypass in Quest Netvault Backup

CVE-2018-1163

This vulnerability allows remote attackers to bypass authentication on vulnerable installations of Quest NetVault Backup 11.2.0.13. The specific flaw exists within JSON RPC Request handling. By setting the checksession parameter to a specific value, it is possible to bypass authentication to critical functions. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-4752.

Vulnerability class: Broken Authentication

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.160 (96.8th percentile), scored .

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 96.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2018-1163: held from 0.160 to 0.160.

EPSS over last 30 days · oldest: 0.160 · newest: 0.160 · change: 0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2018-1163?
CVE-2018-1163 is a critical-severity vulnerability in Quest Netvault Backup, classified under Improper Authentication. CVSS score: 9.8/10. Published 2018-02-08.
How severe is CVE-2018-1163?
Critical severity. CVSS v3 base score is 9.8 out of 10.