CVE-2008-6474 in BIG-IP
Summary
by MITRE
The management interface in F5 BIG-IP 9.4.3 allows remote authenticated users with Resource Manager privileges to inject arbitrary Perl code via unspecified configuration settings related to Perl EP3 with templates, probably triggering static code injection.
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Analysis
by VulDB Data Team • 08/09/2021
The vulnerability identified as CVE-2008-6474 resides within the management interface of F5 BIG-IP version 9.4.3, representing a critical security flaw that enables remote authenticated attackers with Resource Manager privileges to execute arbitrary Perl code. This vulnerability specifically targets the Perl EP3 template processing functionality, which serves as a component for generating dynamic content within the BIG-IP system's configuration management framework. The flaw manifests through unspecified configuration settings that govern how Perl code is interpreted and executed within template contexts, creating an avenue for code injection attacks that bypass normal security boundaries.
The technical implementation of this vulnerability falls under the category of static code injection, where attacker-controlled input is incorporated into executable Perl code without proper sanitization or validation. This type of vulnerability is classified as CWE-94 according to the Common Weakness Enumeration catalog, which specifically addresses "Improper Control of Generation of Code ('Code Injection')" where code is generated or executed based on untrusted input. The attack vector requires an authenticated user with Resource Manager privileges, which aligns with the principle of least privilege violations where administrative capabilities are improperly exposed to potentially compromised accounts. The vulnerability's exploitation occurs during the template processing phase where configuration settings are parsed and executed, allowing attackers to inject malicious Perl code that gets executed with the privileges of the management interface process.
The operational impact of CVE-2008-6474 extends beyond simple code execution, as it provides attackers with the ability to manipulate the underlying system configuration and potentially escalate their privileges within the BIG-IP environment. This vulnerability directly affects the integrity and confidentiality of the network infrastructure managed by F5 BIG-IP systems, as attackers can modify load balancing configurations, access sensitive network data, and potentially establish persistent access points within the network. The attack scenario typically involves an authenticated attacker who can leverage their Resource Manager privileges to modify configuration templates, injecting malicious Perl code that executes during subsequent template processing operations. This type of vulnerability is particularly dangerous in enterprise environments where BIG-IP appliances serve as critical infrastructure components for traffic management and security policy enforcement.
Mitigation strategies for this vulnerability should prioritize immediate patching of affected F5 BIG-IP systems to the latest available security updates from F5 Networks, as this vulnerability was addressed through official security releases. Organizations should implement strict access controls and privilege management to limit Resource Manager access to only essential personnel, following the principle of least privilege as recommended by the MITRE ATT&CK framework for privilege escalation techniques. Network segmentation and monitoring should be enhanced to detect anomalous template modification activities, while regular security audits should verify that no unauthorized code injection has occurred. Additionally, implementing proper input validation and sanitization procedures for all template processing operations can help prevent similar vulnerabilities from manifesting in other components of the system architecture.