Out-of-bounds Read in Lucet-Runtime-Internals Project

CVE-2020-35859

An issue was discovered in the lucet-runtime-internals crate before 0.5.1 for Rust. It mishandles sigstack allocation. Guest programs may be able to obtain sensitive information, or guest programs can experience memory corruption.

Vulnerability class: Buffer Overflow

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

EPSS exploit prediction

EPSS: 0.015 (73.7th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.7% 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-2020-35859: held from 0.015 to 0.015.

EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: +0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2020-35859?
CVE-2020-35859 is a critical-severity vulnerability in Lucet-Runtime-Internals Project, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2020-12-31.
How severe is CVE-2020-35859?
Critical severity. CVSS v3 base score is 9.1 out of 10.
Is CVE-2020-35859 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.