CVE-2022-35728 is a critical vulnerability affecting multiple versions of F5 BIG-IP products, including the Access Policy Manager, Advanced Firewall Manager, and others. This vulnerability allows an authenticated user's iControl REST token to remain valid for a limited time after logging out from the Configuration utility, potentially leading to unauthorized access.
With a CVSS score of 8.1, this vulnerability is classified as high severity. The impact is significant as it can compromise the confidentiality, integrity, and availability of the affected systems. Organizations utilizing these products should understand the urgency of addressing this issue, especially given the potential for exploitation.
Currently, there are no known exploits confirmed in the wild, but the nature of this vulnerability, combined with its high score, warrants immediate attention. Organizations should prioritize patching to safeguard against potential attacks that may exploit this weakness.
Organizations should prioritize patching immediately to mitigate the risks associated with CVE-2022-35728.
Vulnerability Details
The vulnerability in question is detailed as follows: In BIG-IP Versions 17.0.x before 17.0.0.1, 16.1.x before 16.1.3.1, 15.1.x before 15.1.6.1, 14.1.x before 14.1.5.1, and all versions of 13.1.x, as well as BIG-IQ version 8.x before 8.2.0 and all versions of 7.x, an authenticated user's iControl REST token may remain valid for a limited time after logging out from the Configuration utility.
The vulnerability is classified under CWE-613, indicating an issue with the token management process. The CVSS score of 8.1 reflects high severity, primarily due to the potential for unauthorized access if the token is exploited.
Technical Analysis
The root cause of CVE-2022-35728 stems from the improper management of authentication tokens within the affected F5 products. Specifically, the iControl REST token continues to be valid even after a user logs out, which could allow attackers to make unauthorized requests while the token remains active.
The attack vector is classified as network-based, indicating that an attacker could exploit this vulnerability remotely. The complexity of the attack is considered high, as it requires knowledge of the authentication process and access to the relevant tokens. Importantly, no user interaction is required to exploit this vulnerability.
The impacts associated with this vulnerability are severe. Confidentiality, integrity, and availability are all rated as high, suggesting that an attacker could potentially access sensitive information, alter data, or disrupt service availability.
Risk & Impact Analysis
The real-world risk posed by CVE-2022-35728 is significant due to the wide deployment of F5 BIG-IP products in various enterprise environments. Organizations using these products should consider the potential for unauthorized access through the exploitation of lingering authentication tokens.
The blast radius of this vulnerability is considerable, as it affects multiple components within the F5 ecosystem, including application security managers and traffic managers. Organizations must assess their exposure and prioritize remediation efforts based on their deployment.
Given the high CVSS score, organizations should address this vulnerability in their priority patch cycle, implementing fixes as soon as possible to mitigate risks.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions include: BIG-IP Versions 17.0.x before 17.0.0.1, 16.1.x before 16.1.3.1, 15.1.x before 15.1.6.1, 14.1.x before 14.1.5.1, and all versions of 13.1.x. Additionally, BIG-IQ versions 8.x before 8.2.0 and all versions of 7.x are impacted.
Mitigation & Remediation
Organizations should implement the following mitigation strategies to address CVE-2022-35728: apply the latest patches provided by F5 for the affected products. For detailed guidance on patching and configuration hardening, refer to the F5 support documentation.
Organizations should also consider security testing to validate the effectiveness of the patching process.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor logs for unusual authentication activity, especially any instances where REST tokens are used after logout. Additionally, establishing alerts for changes in user session behavior can help in identifying potential misuse.
AppSecure Threat Intelligence Insight
CVE-2022-35728 highlights the importance of robust token management and logout processes in applications. As organizations increasingly rely on REST APIs, understanding the security implications of authentication mechanisms is crucial. This vulnerability serves as a reminder of the need for continuous security assessments and updates to protect sensitive user data.
Organizations should implement regular security testing to ensure compliance with best practices and to identify any weaknesses in their configurations. For further reading on security practices, refer to our articles on vulnerability management and penetration testing methodology for effective security strategies.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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