External risk intelligence

Oracle Coherence Remote Code Execution Vulnerability

CVE advisoryKnown Exploit

CVE-2020-2555

A vulnerability in Oracle Coherence, a Fusion Middleware component, can be exploited by an unauthenticated attacker with network access, potentially leading to a system takeover. This presents a significant business risk through compromise of critical systems and data. Affected organizations should prioritize addressin

3Halo Surface Signal

Deserialization

Oracle Access Manager

11.1.2.3.03.7.1.012.1.3.0.012.2.1.3.012.2.1.4.011.3.0 to 11.3.211.0.011.1.011.2.08.0.0 to 8.2.27.0.112.112.215.016.04.3.0.1.0 to 4.3.0.6.04.2.0.2.04.2.0.3.04.4.0...

External exposure likelihood

Halo Surface Signal score for CVE-2020-2555

The vulnerability affects Oracle Coherence and related middleware products which use the T3 protocol for internal communication. While these services are generally deployed within internal application tiers, they are occasionally exposed to the public internet in misconfigured or complex environments, but such exposure is not the standard or intended deployment pattern for the product.

Horizon Alert

Summary of the vulnerability and why it matters

A vulnerability in Oracle Coherence, a component of Oracle Fusion Middleware, could allow an unauthorized attacker to compromise the system. This flaw enables an attacker with network access to potentially take over Oracle Coherence. The successful exploitation of this vulnerability could lead to significant impacts on business operations and data.

  • Vulnerable Oracle Coherence component
  • Flaw allows system takeover
  • Compromise of critical business functions

Attack Path

How an attacker could exploit the issue

The vulnerability allows an attacker with network access to compromise Oracle Coherence. This attack does not require any authentication from the attacker. Successful exploitation can lead to a full takeover of the Oracle Coherence system, impacting its confidentiality, integrity, and availability.

  • Network access to Oracle Coherence is required.
  • An unauthenticated attacker gains access.
  • Triggering the vulnerability results in system takeover.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability presents a significant risk to organizations utilizing affected Oracle Coherence products. Attackers with a moderate skill level could exploit this flaw remotely, potentially leading to a complete takeover of the affected systems. The potential for extensive data compromise and operational disruption necessitates immediate attention.

  • Likely attacker skill level: Moderate.
  • Required access or conditions: Network access, no authentication.
  • Business risk or urgency: High; potential system takeover.

Priority actions

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability in Oracle Coherence and related Fusion Middleware products allows an unauthenticated attacker to take over the affected system. Successful exploitation could lead to significant business risk by compromising critical systems and data. Organizations using affected Oracle products should prioritize addressing this vulnerability to protect their operations.

  • Identify exposed Oracle assets.
  • Reduce exposure or isolate affected systems.
  • Apply vendor fixes and validate.
  • Monitor for related activity.

Frequently asked questions

What is Oracle Coherence and its role in Fusion Middleware?

Oracle Coherence is a distributed data management and caching solution within Oracle Fusion Middleware. It enables applications to share and manage data in memory across multiple servers, enhancing performance and scalability for various business functions.

What type of weakness does CVE-2020-2555 represent?

CVE-2020-2555 details an "Insecure Deserialization" weakness. This occurs when software does not properly handle serialized data, potentially allowing an attacker to execute arbitrary code by submitting specially crafted data.

How can an unauthenticated attacker exploit CVE-2020-2555?

An unauthenticated attacker with network access to Oracle Coherence can exploit this vulnerability. By leveraging the T3 protocol, they can achieve a complete takeover of the affected Oracle Coherence system.

What is the significance of CVE-2020-2555 for organizations?

This vulnerability poses a critical risk as it allows for a full system takeover with a CVSS 3.0 Base Score of 9.8. It impacts Oracle Coherence and other Oracle products, necessitating prompt remediation to prevent confidentiality, integrity, and availability compromises.

What steps should be taken to address the Oracle Coherence vulnerability?

Organizations should identify exposed Oracle assets, reduce their external exposure, and isolate affected systems if necessary. Applying vendor-provided fixes and validating their implementation are crucial steps. Continuous monitoring for related malicious activity is also recommended.

References