What is CVE-2020-21522?

CVE-2020-21522 is a critical-severity vulnerability in Halo, classified under Path Traversal. CVSS score: 9.8/10. Published 2020-09-30.

How severe is CVE-2020-21522?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Path Traversal in Halo

CVE-2020-21522

An issue was discovered in halo V1.1.3. A Zip Slip Directory Traversal Vulnerability in the backend,the attacker can overwrite some files, such as ftl files, .bashrc files in the user directory, and finally get the permissions of the operating system.

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.015 (72.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Halo — versions 1.1.3
N/a — versions n/a

Weakness classification (CWE)

CWE-22 — Path Traversal

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2020-21522?: CVE-2020-21522 is a critical-severity vulnerability in Halo, classified under Path Traversal. CVSS score: 9.8/10. Published 2020-09-30.
How severe is CVE-2020-21522?: Critical severity. CVSS v3 base score is 9.8 out of 10.