by Kastro
Paper/Archive/CVE-2020-21523

CVE-2020-21523

mitre — A Server-Side Freemarker template injection vulnerability in halo CMS v1.1.3 In the Edit Theme File function.

EPSS 3%CVSS 9.8
critical.is priorityof 100
47
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 85.3.853 × 2017.1No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

A Server-Side Freemarker template injection vulnerability in halo CMS v1.1.3 In the Edit Theme File function. The ftl file can be edited. This is the Freemarker template file. This file can cause arbitrary code execution when it is rendered in the background. exp: <#assign test="freemarker.template.utility.Execute"?new()> ${test("touch /tmp/freemarkerPwned")}

Affected

ProductAffectedFixed inSource
n/an/a–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

refgithub.com/halo-dev/halo/issues/419