CVE-2017-12621
Improper Restriction of XML External Entity Reference in Jelly
9.8
CRITICAL
CVSS 3.1
EPSS 0.75%
Description
During Jelly (xml) file parsing with Apache Xerces, if a custom doctype entity is declared with a "SYSTEM" entity with a URL and that entity is used in the body of the Jelly file, during parser instantiation the parser will attempt to connect to said URL. This could lead to XML External Entity (XXE) attacks in Apache Commons Jelly before 1.0.1.
How to fix CVE-2017-12621
To remediate CVE-2017-12621, upgrade the affected package to a fixed version below.
- —upgrade to 1.0.1 or later
Is CVE-2017-12621 being exploited?
Low — EPSS is 0.8%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1.0.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |