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CVE-2023-5763: Medium Vulnerability in Eclipse Glassfish

A medium-severity vulnerability exists in Eclipse Glassfish versions 5 and 6, affecting systems running outdated JDK versions. This vulnerability allows remote attackers to load malicious code via insecure ORB listeners. Immediate action is recommended to mitigate potential risks.

MEDIUMCVSS 6.8 · Published November 3, 2023

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In Eclipse Glassfish 5 or 6, a medium-severity vulnerability has been identified that impacts systems running outdated versions of the Java Development Kit (JDK). This vulnerability allows remote attackers to load malicious code on the server via access to insecure Object Request Broker (ORB) listeners. The affected JDK versions include any lower than 6u211, 7u201, or 8u191.

The CVSS score for this vulnerability is 6.8, indicating a medium level of severity. The nature of the vulnerability, combined with the potential for remote code execution, poses significant risks to organizations that utilize these versions of Glassfish. Organizations should prioritize patching to mitigate risks associated with this vulnerability.

Organizations using Eclipse Glassfish should be aware of the real-world implications of this vulnerability. Attackers may leverage this weakness to execute arbitrary code, which could lead to unauthorized access or manipulation of sensitive data. Given the potential impact, it is crucial for security teams to assess their current JDK versions and take necessary actions to secure their environments.

Immediate action is recommended to address this vulnerability, especially for organizations that may be operating in sensitive environments. Regular updates and security assessments can help mitigate the risks posed by this vulnerability.

Vulnerability Details

The vulnerability in Eclipse Glassfish is classified as a remote code execution vulnerability due to the lack of proper access controls on ORB listeners. The official CVE description states that this vulnerability allows remote attackers to load malicious code on the server by exploiting insecure configurations.

According to the CVSS metrics, this vulnerability has a base score of 6.8, indicating a medium severity. The attack vector is classified as NETWORK, while the attack complexity is rated as HIGH, meaning that some user interaction is required for successful exploitation. The confidentiality and integrity impacts are rated HIGH, while availability impact is rated as NONE.

The affected products include versions of Eclipse Glassfish ranging from 5.0.0 to 6.2.5. Organizations running these versions should take immediate action to assess their exposure and apply necessary updates.

Technical Analysis

The root cause of this vulnerability lies in the improper configuration of ORB listeners, which allows unauthorized access to sensitive functionalities. The attack vector is primarily network-based, requiring attackers to have access to the network where the vulnerable server resides.

The complexity of the attack is considered high due to the requirement of user interaction, which may involve tricking the user into accessing a malicious resource. No privileges are required for the attacker to exploit this vulnerability, making it particularly concerning.

Confidentiality and integrity impacts are rated high, indicating that successful exploitation could lead to unauthorized access to sensitive data and the ability to modify or delete it. However, there is no impact on availability.

Risk & Impact Analysis

The risk to organizations includes the potential for remote code execution, which could lead to a complete compromise of the affected system. Attackers may leverage this vulnerability to execute arbitrary code and gain unauthorized access to sensitive information or services.

With the ability to load malicious code, the blast radius of this vulnerability is significant. Organizations utilizing Eclipse Glassfish need to assess their exposure based on the versions in use and the configurations of their servers.

Given the CVSS score of 6.8, organizations should address this vulnerability in their priority patch cycle. Organizations that fail to mitigate this risk may face severe consequences, including data breaches and loss of customer trust.

Signal

Status

Known Exploit

No

Public PoC

No

Actively Exploited

No

Ransomware Use

No

Affected Versions

The affected versions of Eclipse Glassfish are 5.0.0 to 6.2.5. Organizations running these versions should consider immediate updates to secure their systems against this vulnerability. If version information is not available, all versions prior to vendor patch should be considered at risk.

Mitigation & Remediation

To mitigate this vulnerability, organizations should ensure they are running supported versions of the JDK. It is essential to update to the latest versions of JDK that are not vulnerable to this issue. Regular updates and patches can play a crucial role in maintaining the security of the Glassfish server.

Organizations may also consider implementing additional security measures such as configuration hardening, restricting access to ORB listeners, and monitoring network traffic for unusual activities. For comprehensive security assessments, organizations can engage in application security assessments that can identify and remediate similar vulnerabilities.

Network controls should also be reviewed to ensure that only authorized users have access to sensitive configurations. Continuous monitoring of the server is necessary to detect any unauthorized changes promptly.

Detection Guidance

To detect potential exploitation of this vulnerability, organizations should monitor log indicators for unusual access patterns to ORB listeners. Additionally, behavioral anomalies in application performance or network signatures can indicate attempts to exploit this vulnerability.

System changes should also be monitored closely, particularly those involving configuration alterations or unauthorized access attempts. Implementing a robust logging mechanism can aid in identifying these indicators.

AppSecure Threat Intelligence Insight

The long-term significance of CVE-2023-5763 highlights the necessity for organizations to maintain updated software versions and configurations. This vulnerability represents a broader pattern of risks associated with outdated systems and insecure configurations.

Lessons for security teams include the importance of regular vulnerability assessments and timely updates to mitigate risks. Security teams should also focus on educating developers and administrators about secure coding practices and configuration management.

Strategically, organizations can strengthen their security posture by adopting a proactive approach to vulnerability management. Continuous security testing, such as continuous security testing, can help identify weaknesses before they are exploited.

By addressing vulnerabilities proactively, organizations can reduce their attack surface and minimize the potential for successful exploits.

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

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