External risk intelligence

Oracle Java SE Runtime Environment Scripting Vulnerability.

CVE advisoryKnown Exploit

CVE-2011-3544

A vulnerability in Oracle's Java Runtime Environment impacts confidentiality, integrity, and availability. Attackers can exploit this through untrusted Java Web Start applications and applets, posing a business risk.

5Halo Surface Signal

Oracle Jdk

before 1.6.01.6.01.7.0

External exposure likelihood

Halo Surface Signal score for CVE-2011-3544

This vulnerability affects Java Applets, which were designed to be embedded in web pages and executed automatically by a browser when a user visited an internet site. This deployment model makes the vulnerable component public-facing by design, as it is intended to interact with untrusted remote content accessed via the web.

Horizon Alert

Summary of the vulnerability and why it matters

The Java Runtime Environment component within Oracle's Java SE JDK and JRE contains a vulnerability that can impact confidentiality, integrity, and availability. This flaw can be exploited by remote, untrusted Java Web Start applications and applets through unspecified methods related to scripting.

  • Vulnerable component: Java Runtime Environment
  • Core weakness: Unspecified scripting-related flaw
  • Main business impact: Compromised data and system access

Attack Path

How an attacker could exploit the issue

The Java Runtime Environment contains a vulnerability that allows remote untrusted Java Web Start applications and applets to compromise confidentiality, integrity, and availability. Attackers can exploit this by leveraging unknown vectors within the scripting component. Successful exploitation could lead to significant business risk by affecting system operations and data.

  • Exposure: Network access to Java applications.
  • Attacker: Unauthenticated remote attacker.
  • Trigger: Running a malicious Java applet or Web Start application.
  • Result: Control over systems and data.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability presents a significant risk due to its potential for widespread impact and ease of exploitation. Attackers with no special skills can leverage this flaw to compromise systems remotely, leading to substantial data loss, system disruption, and unauthorized access. Organizations should prioritize addressing this vulnerability to mitigate the associated business risks.

  • Likely attacker skill level: Low
  • Required access or conditions: Remote, no user interaction
  • Business risk or urgency: High impact, critical urgency

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

The identified vulnerability presents a significant risk to organizational systems, potentially impacting data confidentiality, integrity, and availability. The vulnerability is related to the Java Runtime Environment and can be exploited through untrusted Java Web Start applications and applets via unknown vectors. This could allow remote attackers to execute arbitrary code, leading to severe business disruption and data compromise.

  • Identify all Java Runtime Environment installations.
  • Isolate or disable vulnerable Java Web Start applications.
  • Apply vendor updates, verify, and monitor.

Frequently asked questions

What are Oracle Java SE JDK and JRE?

Oracle Java SE JDK (Java Development Kit) and JRE (Java Runtime Environment) are software packages used for developing and running Java applications. The JDK includes the JRE and additional development tools like compilers and debuggers, while the JRE contains the Java Virtual Machine and core libraries needed to execute Java programs. Java SE itself is the core platform providing essential libraries and APIs for general-purpose applications.

What kind of vulnerability is CVE-2011-3544?

CVE-2011-3544 is an unspecified vulnerability in the Java Runtime Environment component of Oracle Java SE JDK and JRE. It is related to scripting and can be classified as CWE-284, Improper Access Control. This flaw allows remote, untrusted Java Web Start applications and applets to affect confidentiality, integrity, and availability.

How might an attacker exploit CVE-2011-3544?

An attacker can exploit CVE-2011-3544 by tricking a user into visiting a specially crafted webpage. This webpage can host malicious Java applets or Web Start applications that leverage a bug in the Java Runtime's JavaScript engine. By redefining the 'toString' function, attackers can execute their code with elevated privileges, bypassing the Java security sandbox and potentially downloading and running arbitrary files, including malware.

What is the relevance of Halo Surface Signal for CVE-2011-3544?

Halo Surface Signal indicates that CVE-2011-3544 is 'Very likely' to be exploited because the vulnerability affects Java Applets. These applets are designed to be embedded in web pages and executed automatically by browsers, making the vulnerable component publicly accessible and prone to interaction with untrusted remote content.

What is the recommended action for CVE-2011-3544?

The critical first step is to update vulnerable Java applications to the latest versions provided by Oracle, as specified in their advisories. Organizations should identify all Java Runtime Environment installations, isolate or disable vulnerable Java Web Start applications, and then apply, verify, and monitor the vendor updates.

References