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Comprehensive Analysis and Mitigation of CVE-2020-14883 Vulnerability in Oracle WebLogic Server

CVE Image for report on CVE-2020-14883

Executive Summary

CVE-2020-14883 is a critical vulnerability in the Oracle WebLogic Server, a component of Oracle Fusion Middleware. This vulnerability affects multiple versions of Oracle WebLogic Server, including 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0, and 14.1.1.0.0. The vulnerability allows an unauthenticated attacker with network access via HTTP to compromise the Oracle WebLogic Server, potentially leading to a complete takeover of the server. This report provides a comprehensive analysis of CVE-2020-14883, including its details, exploitation in the wild, mitigation strategies, and references to further information.

Technical Information

CVE-2020-14883 is a severe vulnerability in the Console component of Oracle WebLogic Server. It is easily exploitable and allows a high-privileged attacker with network access via HTTP to compromise the server. The vulnerability has a CVSS 3.1 Base Score of 7.2, indicating a high severity level. The CVSS vector is CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H, which means that the attack vector is network-based, the attack complexity is low, and no user interaction is required.

The affected versions of Oracle WebLogic Server are 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0, and 14.1.1.0.0. The vulnerability allows an unauthenticated attacker to execute arbitrary commands on the server, leading to a full compromise. This includes stealing confidential information, installing malware, and using the server as a launchpad for further attacks.

Exploitation in the Wild

CVE-2020-14883 has been actively exploited in the wild. Attackers have been using this vulnerability to execute remote code on the affected Oracle WebLogic Server instances. The exploitation does not require authentication, making it a highly attractive target for attackers.

Notable exploits and attacks include Remote Code Execution (RCE) and Cryptojacking. Attackers can exploit this vulnerability to execute arbitrary commands on the server, leading to a full compromise. This includes stealing confidential information, installing malware, and using the server as a launchpad for further attacks. There have been instances where attackers have exploited CVE-2020-14883 to deploy cryptocurrency miners on compromised servers. References for these exploits can be found at Packet Storm Security and Trend Micro.

Several Proof of Concepts (PoCs) have been published for CVE-2020-14883, demonstrating how the vulnerability can be exploited. These PoCs are available on GitHub at the following links: 1n7erface/PocList, B1anda0/CVE-2020-14883, Yang0615777/PocList, fan1029/CVE-2020-14883EXP, murataydemir/CVE-2020-14883, and Metasploit Module.

APT Groups using this vulnerability

While specific APT groups exploiting CVE-2020-14883 have not been widely reported, the nature of the vulnerability makes it a valuable target for various threat actors, including state-sponsored groups and cybercriminal organizations. The sectors and countries targeted by these APT groups are diverse, ranging from government agencies to private enterprises across the globe.

Affected Product Versions

The affected versions of Oracle WebLogic Server are as follows: Oracle WebLogic Server 10.3.6.0.0, Oracle WebLogic Server 12.1.3.0.0, Oracle WebLogic Server 12.2.1.3.0, Oracle WebLogic Server 12.2.1.4.0, and Oracle WebLogic Server 14.1.1.0.0.

Workaround and Mitigation

Oracle has released patches to address this vulnerability. It is crucial for organizations using affected versions of Oracle WebLogic Server to apply these patches immediately to mitigate the risk of exploitation. The patches for CVE-2020-14883 were included in the Oracle Critical Patch Update Advisory - October 2020. The advisory can be found at Oracle Critical Patch Update Advisory - October 2020.

Organizations should also monitor their systems for indicators of compromise (IOCs) associated with CVE-2020-14883 exploitation. These IOCs include unusual outbound network traffic, unexpected high CPU usage (potentially indicating cryptojacking), unauthorized changes to system files or configurations, and the presence of unfamiliar processes or services.

References

For further information on CVE-2020-14883, please refer to the following resources:

Rescana is here for you

At Rescana, we understand the critical importance of staying ahead of cybersecurity threats. Our Continuous Threat and Exposure Management (CTEM) platform helps organizations identify, assess, and mitigate vulnerabilities like CVE-2020-14883. We are committed to providing our customers with the tools and insights needed to protect their systems and data. If you have any questions about this report or any other issue, please do not hesitate to contact us at ops@rescana.com.

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