CVE-2016-6415 refers to a high-severity information disclosure vulnerability affecting Cisco's IOS, IOS XE, and IOS XR products. The vulnerability arises from improper handling of Security Association (SA) negotiation requests within the IKEv1 implementation. This flaw allows remote attackers to exploit the vulnerability to access sensitive information stored in the device memory, which poses a significant risk to organizations relying on these systems.
The CVSS score for this vulnerability is 7.5, indicating a high severity level. Its significance is underscored by its potential to allow unauthorized access to sensitive data, raising serious concerns for network security. Organizations must recognize that this vulnerability could lead to significant impacts, including data breaches and unauthorized information disclosure.
As of May 19, 2023, this vulnerability is listed in the Known Exploited Vulnerabilities (KEV) catalog, highlighting its active exploitation in the wild. Consequently, organizations should prioritize patching immediately, given the critical nature of the threat and the potential for severe consequences.
Defenders need to stay vigilant and ensure their systems are up-to-date with the latest security patches to mitigate the risks associated with CVE-2016-6415.
Vulnerability Details
The vulnerability in question arises from the server IKEv1 implementation in multiple Cisco products, specifically IOS versions 12.2 through 12.4, 15.0 through 15.6, IOS XE up to 3.18S, and IOS XR versions 4.3.x and 5.0.x through 5.2.x. The official description states that it allows remote attackers to obtain sensitive information from device memory via a Security Association (SA) negotiation request.
The vulnerability is classified under CWE-200, indicating an information exposure issue. Its CVSS v3.1 vector is defined as: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N, which denotes a network attack vector with low complexity and no required privileges or user interaction.
The vulnerability was published on September 19, 2016, and has since undergone analysis to evaluate its impact and remediation strategies.
Technical Analysis
The root cause of CVE-2016-6415 is attributed to insufficient condition checks within the code that manages IKEv1 security negotiation requests. The attack vector is network-based, allowing attackers to exploit the vulnerability remotely, which presents a low complexity for successful exploitation.
No privileges are required for exploitation, and user interaction is not necessary, making this vulnerability particularly concerning. The confidentiality impact is rated as high, while integrity and availability impacts are rated as none.
Risk & Impact Analysis
Organizations may face significant risks due to CVE-2016-6415, given its potential to expose sensitive information stored in device memory. The blast radius of this vulnerability could be extensive, affecting numerous devices and potentially leading to data breaches.
With the vulnerability being actively exploited, organizations should assess their exposure and implement remediation strategies without delay. The urgency for patching is critical, particularly for those utilizing the affected Cisco products.
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The vulnerability affects the following Cisco product versions: IOS versions 12.2 through 12.4 and 15.0 through 15.6, IOS XE up to 3.18S, and IOS XR versions 4.3.x and 5.0.x through 5.2.x. Organizations should ensure that they upgrade to the latest patched versions to eliminate this risk.
Mitigation & Remediation
To remediate CVE-2016-6415, Cisco has provided updates for the affected products. Organizations must apply these updates as per vendor instructions. If updates are not immediately available, consider implementing network controls to restrict traffic to the affected devices and monitor for any suspicious activity.
Organizations should also consider engaging in penetration testing to validate their security posture post-remediation.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor logs for unusual IKEv1 negotiation requests that could indicate an attempted information disclosure.
Behavioral anomalies in network traffic may also signify exploitation attempts, thus continuous monitoring is recommended.
AppSecure Threat Intelligence Insight
CVE-2016-6415 serves as a critical reminder for organizations to prioritize their patch management processes. The vulnerability highlights the ongoing risks posed by insufficient security checks in widely used network protocols.
Security teams should continuously evaluate their defenses against potential threats represented by similar vulnerabilities and ensure that their systems are resilient against exploitation.
For further guidance on improving security measures, consider reviewing our resources on vulnerability management programs and implementing best practices in penetration testing methodology to enhance your overall security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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