CVE-2017-12621 Information

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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

http://www.securityfocus.com/bid/101052 http://www.securitytracker.com/id/1039444 https://issues.apache.org/jira/browse/JELLY-293 https://lists.apache.org/thread.html/f1fc3f2c45264af44ce782d54b5908ac95f02bf7ad88bb57bfb04b73@3Cdev.commons.apache.org3E

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8