8.2

CVE-2020-24718: freebsd Missing Authorization

CVSS: 8.2v3.1HighModified
Published 25-09-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-24718 is a high (CVSS 8.2) Missing Authorization vulnerability in freebsd. EPSS estimates a 0.60% chance of exploitation in the next 30 days, higher than 47.9% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
43/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.2/10
010
High · v3.1 (NVD)
EPSS score
0.60%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github

Timeline

  1. 25-09-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

bhyve, as used in FreeBSD through 12.1 and illumos (e.g., OmniOS CE through r151034 and OpenIndiana through Hipster 2020.04), does not properly restrict VMCS and VMCB read/write operations, as demonstrated by a root user in a container on an Intel system, who can gain privileges by modifying VMCS_HOST_RIP.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

0.60%

Chance of exploitation in the next 30 days

Percentile

48%

Versus all other CVEs

30-day change

0.00 pp

From 0.60% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.60%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • githubUnverified

    Illumos Gate

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Freebsd1 product
  • freebsdEOL≤ 11.2 | 11.3 | 11.3:p1 | 11.3:p10 | 11.3:p11 | 11.3:p12 | 11.3:p13 | 11.3:p2 | 11.3:p3 | 11.3:p4 | 11.3:p5 | 11.3:p6 | 11.3:p7 | 11.3:p8 | 11.3:p9 | 11.3:rc3 | 11.4 | 11.4:beta1 | 11.4:p1 | 11.4:p2 | 11.4:p3 | 11.4:rc1 | 11.4:rc2 | 12.0 | 12.0:p1 | 12.0:p10 | 12.0:p11 | 12.0:p12 | 12.0:p2 | 12.0:p3 | 12.0:p4 | 12.0:p5 | 12.0:p6 | 12.0:p7 | 12.0:p8 | 12.0:p9 | 12.1 | 12.1:p1 | 12.1:p2 | 12.1:p3 | 12.1:p4 | 12.1:p5 | 12.1:p6 | 12.1:p7 | 12.1:p8 | 12.1:p9
Netapp1 product
Omniosce1 product
Openindiana1 product

4 vendors · 4 products

References

3 links