CVE-2014-3398 in ASA
Summary
by MITRE
The SSL VPN implementation in Cisco Adaptive Security Appliance (ASA) Software allows remote attackers to obtain potentially sensitive software-version information by reading the verbose response data that is provided for a request to an unspecified URL, aka Bug ID CSCuq65542.
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Analysis
by VulDB Data Team • 12/17/2024
The vulnerability identified as CVE-2014-3398 resides within the SSL VPN implementation of Cisco Adaptive Security Appliance (ASA) Software, representing a significant information disclosure flaw that exposes sensitive system details to remote attackers. This vulnerability specifically affects the handling of verbose response data generated by the ASA software when processing requests to unspecified URLs within the SSL VPN framework. The flaw manifests as an unintended disclosure of software version information that could be leveraged by threat actors to gain intelligence about the targeted system's configuration and potentially identify other vulnerabilities associated with specific software versions.
The technical nature of this vulnerability stems from improper input validation and response handling within the SSL VPN module of Cisco ASA appliances. When a remote attacker sends a request to an unspecified URL endpoint within the SSL VPN service, the system responds with verbose error or informational messages that inadvertently include software version strings and potentially other sensitive metadata. This occurs due to inadequate sanitization of response data before transmission, allowing attackers to extract detailed information about the underlying software implementation. The vulnerability operates at the application layer and requires no authentication or privileged access to exploit, making it particularly dangerous as it can be triggered remotely from any location with network connectivity to the affected appliance.
The operational impact of this vulnerability extends beyond simple information disclosure, as the exposed software version information can serve as a foundation for more sophisticated attacks. Attackers can use the disclosed version details to correlate with known vulnerabilities in specific Cisco ASA software releases, potentially identifying additional weaknesses that may not be immediately apparent through standard reconnaissance. This information disclosure creates an initial foothold for attackers to plan targeted exploitation campaigns, as they can determine whether the target system is running vulnerable software versions that may contain other security flaws. The vulnerability specifically aligns with CWE-200, which addresses information exposure, and represents a classic case of sensitive data leakage through improper error handling mechanisms.
The security implications of CVE-2014-3398 are particularly concerning given that it affects network security appliances that are often deployed in critical infrastructure environments. The vulnerability can be exploited by attackers to perform reconnaissance activities that would otherwise require more sophisticated techniques or prior access to the network. Network defenders may find that this vulnerability undermines their security posture by providing attackers with crucial information that can be used to tailor more effective attacks against the appliance or associated systems. The flaw demonstrates how seemingly minor implementation details in security software can create significant exposure points that compromise overall network defense strategies.
Organizations should implement immediate mitigations including applying the relevant Cisco security patches and updates that address this vulnerability, as well as configuring the ASA appliances to limit the amount of information returned in error responses. Network administrators should also consider implementing additional monitoring and logging mechanisms to detect unusual access patterns that may indicate exploitation attempts. The vulnerability highlights the importance of proper error handling and response sanitization in security appliances, as well as the need for regular security assessments to identify similar information disclosure vulnerabilities within network infrastructure components. According to ATT&CK framework, this vulnerability maps to T1083 (File and Directory Discovery) and T1592 (Gather Victim Host Information) as it enables adversaries to collect system information that can be used for further exploitation.