#VU71317 Code Injection in Oracle WebLogic Server - CVE-2023-21838

Vulnerability identifier: #VU71317

Vulnerability risk: Critical

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Red

CVE-ID: CVE-2023-21838

CWE-ID: CWE-94

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
Oracle WebLogic Server

Software vendor:
Oracle

The vulnerability allows a remote non-authenticated attacker to compromise the affected system.

The vulnerability exists due to improper input validation within the ForeignOpaqueReference class. A remote non-authenticated attacker can perform JNDI injection and execute arbitrary Java code on the system.

Install updates from vendor's website.

• https://www.oracle.com/security-alerts/cpujan2023.html
• https://www.zerodayinitiative.com/advisories/ZDI-23-118/
• https://www.zerodayinitiative.com/advisories/ZDI-23-241/