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CVE-2023-45583: Medium Vulnerability in Fortinet FortiProxy

A medium-severity vulnerability exists in Fortinet FortiProxy that may allow attackers to execute unauthorized commands. Organizations are advised to prioritize remediation to mitigate potential risks.

MEDIUMCVSS 6.7 · Published May 14, 2024

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CVE-2023-45583 is a medium-severity vulnerability that affects multiple Fortinet products, specifically FortiProxy, FortiPAM, FortiOS, and FortiSwitchManager. This vulnerability allows attackers to execute unauthorized code or commands through specially crafted CLI commands and HTTP requests. The affected versions include FortiProxy versions 7.2.0 through 7.2.5, 7.0.0 through 7.0.11, and others. With a CVSS score of 6.7, this vulnerability poses a significant risk to organizations utilizing these systems.

Risk to organizations includes potential unauthorized access and control over affected systems, which can lead to data breaches and service disruption. Given the nature of this vulnerability, organizations should prioritize patching immediately to mitigate the risks associated with exploitation.

The vulnerability was published on May 14, 2024, and has been classified as CWE-134, indicating a use of externally-controlled format string. It is crucial for organizations to evaluate their exposure and implement necessary updates as soon as possible.

Current exploitation status indicates no known public exploits or active exploitation in the wild. However, the lack of exploits should not lead to complacency; organizations must remain vigilant and proactive in their security posture.

The following sections will detail the vulnerability, its technical implications, and provide guidance on remediation strategies.

Vulnerability Details

The vulnerability presents itself in Fortinet's products, allowing unauthorized code execution. Specifically, it can be triggered by utilizing crafted CLI commands or HTTP requests. The CVSS vector for this vulnerability is CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H, indicating that it requires high privileges but allows for local access.

The affected versions include FortiProxy, FortiPAM, FortiOS, and FortiSwitchManager, with a focus on versions ranging from 1.1.0 to 7.2.5. The vulnerability has been assigned a medium severity score of 6.7 based on the CVSS scoring system.

Organizations are encouraged to consult Fortinet's vendor advisories for detailed information, and to apply any available patches to mitigate this vulnerability.

Technical Analysis

The root cause of CVE-2023-45583 is a vulnerability related to externally-controlled format strings. This occurs when user-controlled data is used to format output without proper validation, allowing an attacker to craft malicious inputs that can alter the execution flow of the application.

The attack vector is primarily local, which means that an attacker needs to have a local presence to exploit this vulnerability. The attack complexity is low, suggesting that it can be exploited without extensive preparation or specialized knowledge.

High privileges are required to exploit this vulnerability, meaning that an attacker would need some level of access to the system. User interaction is not required, making it easier for an attacker to execute an exploit if they obtain the necessary access.

The impact on confidentiality, integrity, and availability is rated as high, indicating that successful exploitation could lead to significant compromises of the affected systems and data.

Risk & Impact Analysis

The real-world risk associated with CVE-2023-45583 is substantial, especially for organizations that rely on Fortinet's products for critical operations. Attackers may leverage this vulnerability to gain unauthorized access, execute arbitrary commands, and potentially disrupt services.

Given the high impact potential, organizations should prioritize addressing this vulnerability in their patch management cycles. The urgency of remediation is classified as medium due to the lack of known exploits but should not diminish the importance of applying relevant updates.

The blast radius for exploitation could extend beyond the immediate system if the compromised device has network access, allowing attackers to pivot and target other resources within the organization.

Exploitation Status

Signal

Status

Known Exploit

No

Public PoC

No

Actively Exploited

No

Ransomware Use

No

Affected Versions

The vulnerable versions of Fortinet products include the following:

- FortiProxy: 7.2.0 through 7.2.5, 7.0.0 through 7.0.11 - FortiPAM: 1.1.0, 1.0.0 through 1.0.3 - FortiOS: 7.4.0, 7.2.0 through 7.2.5, 7.0.0 through 7.0.13, 6.4.0 through 6.4.14, 6.2.0 through 6.2.15 - FortiSwitchManager: 7.2.0 through 7.2.2, 7.0.0 through 7.0.2

Mitigation & Remediation

Organizations should ensure they are using patched versions of the affected Fortinet products. For remediation, the following actions are recommended:

- Apply available updates as soon as possible to mitigate the risk associated with CVE-2023-45583. - Conduct a review of system configurations and access controls to ensure that unauthorized access is not possible. - Implement network segmentation to limit potential exposure to critical systems.

Consider engaging in penetration testing to identify other vulnerabilities that may exist within your environment.

Detection Guidance

To detect potential exploitation attempts related to this vulnerability, organizations should monitor for the following indicators:

- Unusual CLI command executions or HTTP request patterns. - Logs indicating unauthorized access attempts or privilege escalations.

AppSecure Threat Intelligence Insight

CVE-2023-45583 highlights the ongoing risks associated with vulnerabilities in network security devices. As organizations increasingly rely on Fortinet solutions, it is essential to maintain a proactive approach to security.

The trend of exploitation of vulnerabilities within security appliances emphasizes the need for continuous monitoring and prompt application of patches.

Security teams are encouraged to review their incident response plans and ensure they are equipped to handle potential exploitation scenarios.

Establishing a robust vulnerability management program can further enhance an organization's ability to respond to such threats effectively.

Adopting best practices in penetration testing can also provide insights into potential weaknesses that need to be addressed.

Finally, organizations should consider utilizing cloud penetration testing services to ensure comprehensive security across their environments.

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

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