Improper Input Validation in Oracle Java SE - CVE-2012-1723

Vulnerability identifier: #VU4173

CSH Severity: Critical

CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2012-1723

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: The vulnerability is being exploited in the wild

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to an error in the HotSpot bytecode verifier. By using untrusted Java Web Start applications and untrusted Java applets in a client deployment, a remote attacker can execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.

Note: the vulnerability was being actively exploited.

Oracle Java SE

Install update from vendor's website:
http://www.oracle.com/technetwork/topics/security/alerts-086861.html

• Exploit #2330 - CVE-2012-1723 (Proof of concept exploit for CVE-2012-1723) (April 7, 2020)
• Exploit #750 - Java Applet - Field Bytecode Verifier Cache Remote Code Execution (Metasploit) (March 18, 2020)
• Exploit #1785 - Java Applet Field Bytecode Verifier Cache Remote Code Execution (March 18, 2020)

• http://www.oracle.com/technetwork/topics/security/javacpujun2012-1515912.html

• Remote code execution in Oracle Java SE