#VU49793 Improper input validation in Oracle WebLogic Server - CVE-2021-2109

Vulnerability identifier: #VU49793

Vulnerability risk: Medium

CVSSv4.0: 7.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2021-2109

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Oracle WebLogic Server
Server applications / Application servers

Vendor: Oracle

Description

The vulnerability allows a remote privileged user to execute arbitrary code.

The vulnerability exists due to improper input validation within the Console component in Oracle WebLogic Server. A remote privileged user can exploit this vulnerability to execute arbitrary code.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Oracle WebLogic Server: 10.3.6.0.0 - 14.1.1.0.0

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External links
https://www.oracle.com/security-alerts/cpujan2021.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user 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.