CVE-2015-4852 is a critical vulnerability identified in the WLS Security component of Oracle WebLogic Server versions 10.3.6.0, 12.1.2.0, 12.1.3.0, and 12.2.1.0. This vulnerability allows remote attackers to execute arbitrary commands by exploiting a crafted serialized Java object transmitted over T3 protocol traffic to TCP port 7001. The scope of this CVE is limited to the WebLogic Server product.
Given the CVSS score of 9.8, this vulnerability is classified as critical, indicating a severe risk to affected systems. Risk to organizations includes potential unauthorized access and control over the affected WebLogic instances, leading to data breaches or operational disruptions. Organizations should prioritize patching immediately.
As of the latest analyses, this vulnerability is known to be actively exploited, and multiple public proofs of concept (PoCs) are available, raising the urgency for organizations to take immediate action. The exploitation of this vulnerability can lead to catastrophic consequences, making it essential for defenders to remain vigilant.
In light of these risks, organizations should implement immediate remediation measures, including applying the necessary patches as per vendor instructions and reviewing security controls related to their WebLogic Server deployments.
Vulnerability Details
The vulnerability arises from the deserialization of untrusted data within Apache Commons utilized by the WLS Security component. This flaw allows for remote code execution through specially crafted serialized Java objects sent over T3 protocol traffic. The CVSS score of 9.8 signifies the critical nature of this vulnerability, with impacts on confidentiality, integrity, and availability rated as high.
The affected versions of Oracle WebLogic Server include 10.3.6.0, 12.1.2.0, 12.1.3.0, and 12.2.1.0. The vulnerability was published on November 18, 2015, and is classified under CWE-502.
Technical Analysis
The root cause of CVE-2015-4852 lies in improper handling of serialized Java objects within the WLS Security component. Attackers may leverage this weakness to send malicious payloads over the network, exploiting low attack complexity and requiring no privileges or user interaction, making this vulnerability particularly dangerous.
The attack vector is network-based, with a low attack complexity and no required privileges for exploitation. The impact on confidentiality, integrity, and availability is high, which means that successful exploitation can allow attackers to take complete control of the affected servers.
Risk & Impact Analysis
Organizations running vulnerable versions of Oracle WebLogic Server face a significant risk of unauthorized access and operational disruption. The ability for remote attackers to execute arbitrary commands poses a serious threat, especially considering the potential for data breaches and the exposure of sensitive information.
The blast radius for this vulnerability is extensive, affecting any organization using the specified versions of WebLogic Server. Given the critical CVSS score and exploitation data, organizations should address this vulnerability in their priority patch cycle.
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The following versions of Oracle WebLogic Server are affected: 10.3.6.0, 12.1.2.0, 12.1.3.0, and 12.2.1.0. Organizations running these versions should prepare to implement remediation strategies immediately.
Mitigation & Remediation
Organizations should apply updates per vendor instructions to mitigate risks associated with CVE-2015-4852. It is critical to stay updated with the latest patches provided by Oracle. If immediate patching is not possible, organizations should consider implementing network controls to limit exposure to vulnerable services and review configurations for hardened security.
For more information on pentesting and continuous security testing, organizations can refer to penetration testing services.
Detection Guidance
Monitoring logs for unusual Java object deserialization attempts can indicate potential exploitation attempts. Additionally, behavioral anomalies in application response patterns may signal malicious activity. Network signatures should be established to detect potential exploitation traffic targeting the vulnerable TCP port.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2015-4852 underscores an ongoing trend in vulnerabilities related to deserialization flaws. This highlights the importance for security teams to adopt secure coding practices to avoid similar vulnerabilities in the future. Organizations are encouraged to integrate threat modeling into their development lifecycle to improve resilience against such vulnerabilities.
For further reading on vulnerability management and penetration testing, check out the following resources: vulnerability management program design, penetration testing methodology, and penetration testing reports guide.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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