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)

Published · last modified .

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.

EPSS exploit prediction

EPSS: 0.015 (73.8th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.8% 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-2020-21522: held from 0.015 to 0.015.

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

Affected products

  • Halo — versions 1.1.3

Weakness classification (CWE)

References

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.