Privilege escalation in Tenable Nessus
CVE-2023-0524
As part of our Security Development Lifecycle, a potential privilege escalation issue was identified internally. This could allow a malicious actor with sufficient permissions to modify environment variables and abuse an impacted plugin in order to escalate privileges. We have resolved the issue and also made several defense-in-depth fixes alongside. While the probability of successful exploitation is low, Tenable is committed to securing our customers’ environments and our products. The updates have been distributed via the Tenable plugin feed in feed serial numbers equal to or greater than #202212212055.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (48.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Tenable Nessus
- Tenable Tenable.io
- Tenable Tenable.sc
- Tenable.io, Tenable.sc, Nessus — versions Tenable plugin feed serial numbers less than #202212212055.
Weakness classification (CWE)
References
- www.tenable.com/security/tns-2023-04 (Vendor Advisory)
Frequently asked questions
- What is CVE-2023-0524?
- CVE-2023-0524 is a high-severity vulnerability in Tenable Nessus, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2023-02-01.
- How severe is CVE-2023-0524?
- High severity. CVSS v3 base score is 8.8 out of 10.