XXE attack in Apache Karaf

1) XML External Entity injection

EUVDB-ID: #VU16895

Risk: Low

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-11788

CWE-ID: CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')

Exploit availability: No

Description

The vulnerability allows a remote attacker to conduct XXE-attack.

The vulnerability exists due to improper handling of XML External Entities (XXEs) when parsing an XML file. A remote attacker can deploy XML file directly in the deploy folder, trick the victim into opening it and obtain potentially sensitive information or cause the service to crash.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Karaf: 4.0.0 - 4.2.1

External links

http://karaf.apache.org/security/cve-2018-11788.txt

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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