#VU19595 XML External Entity injection in Quartz Scheduler - CVE-2019-13990

Vulnerability identifier: #VU19595

Vulnerability risk: Medium

CVSSv4.0: 0.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-13990

CWE-ID: CWE-611

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Quartz Scheduler
Universal components / Libraries / Libraries used by multiple products

Vendor: Terracotta

Description

The vulnerability allows a remote attacker to conduct an XML External Entity (XXE) attack on a targeted system.

The vulnerability exists due to insufficient validation of user-supplied XML input in the "initDocumentParser" function in the "xml/XMLSchedulingDataProcessor.java" file. A remote authenticated attacker can submit a malicious job description to the targeted system and conduct an XXE attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Quartz Scheduler: 1.8.0 - 2.3.0

---

External links
https://github.com/quartz-scheduler/quartz/issues/467

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.