#VU11926 Security restrictions bypass in Oracle WebCenter Sites - CVE-2018-2791

Vulnerability identifier: #VU11926

Vulnerability risk: Low

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2018-2791

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Oracle WebCenter Sites
Web applications / Other software

Vendor: Oracle

Description
The vulnerability allows a remote unauthenticated attacker to obtain potentially sensitive information and write arbitrary files on the target system.

The weakness exists in the Oracle WebCenter Sites component of Oracle Fusion Middleware due to improper security restrictions. A remote attacker can trick the victim into opening a specially crafted file, gain unauthorized access to critical data or complete access to all Oracle WebCenter Sites accessible data and unauthorized update, insert or delete access to some of Oracle WebCenter Sites accessible data.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Oracle WebCenter Sites: 11.1.1.8 - 12.2.1.3.0

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External links
https://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html

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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. However, proof of concept for this vulnerability is available.