icedtea-web JAR File Code Injection Vulnerability [CVE-2019-10181]

CVE number – CVE-2019-10181

A vulnerability in icedtea-web could allow an unauthenticated, remote attacker to inject and execute arbitrary code on a targeted system.

The vulnerability exists because the affected software allows executable code to be injected in a Java Archive (JAR) file without compromising signature verification. An attacker could exploit this vulnerability by persuading a user to access a JAR file that submits malicious input to the targeted system. A successful exploit could allow the attacker to execute arbitrary code inside the sandbox on the system. 

The vendor has confirmed the vulnerability and released software updates.

Analysis

• To exploit this vulnerability, an attacker may use misleading language or instructions to persuade a user to access a JAR file that submits malicious input to the targeted system.

Safeguards

• Administrators are advised to apply the appropriate updates.
  
  Administrators are advised to allow only trusted users to have network access.
  
  Administrators are advised to run both firewall and antivirus applications to minimize the potential of inbound and outbound threats.
  
  Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.
  
  Administrators can help protect affected systems from external attacks by using a solid firewall strategy.
  
  Administrators are advised to monitor affected systems.

Vendor Announcements

• The vendor has released an issue report at the following link: Issue #327

Fixed Software

• The vendor has released software updates and a git commit at the following links: icedtea-web 1.8.3 and commit 2fd1e4b769911f2c6f7f3902f7ea21568ddc2f99