What is CVE-2020-7666?

CVE-2020-7666 is a high-severity vulnerability in U-Root, classified under Path Traversal. CVSS score: 7.5/10. Published 2020-09-01.

How severe is CVE-2020-7666?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2020-7666 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Path Traversal in U-Root

CVE-2020-7666

This affects all versions of package github.com/u-root/u-root/pkg/cpio. It is vulnerable to leading, non-leading relative path traversal attacks and symlink based (relative and absolute) path traversal attacks in cpio file extraction.

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.015 (72.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

U-root
N/a Github.com/u-root/u-root/pkg/cpio — versions 0

Weakness classification (CWE)

CWE-22 — Path Traversal

Public proof-of-concept exploits

References

report@snyk.io (Patch, Third Party Advisory, x_refsource_MISC)
report@snyk.io (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-7666?: CVE-2020-7666 is a high-severity vulnerability in U-Root, classified under Path Traversal. CVSS score: 7.5/10. Published 2020-09-01.
How severe is CVE-2020-7666?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2020-7666 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.