CVE-2012-1314 in IOS
Summary
by MITRE
The WAAS Express feature in Cisco IOS 15.1 and 15.2 allows remote attackers to cause a denial of service (memory consumption or device reload) via crafted transit traffic, aka Bug ID CSCtt45381.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 03/22/2021
The vulnerability identified as CVE-2012-1314 resides within Cisco IOS versions 15.1 and 15.2, specifically affecting the Web Application Acceleration Service WAAS Express feature. This flaw represents a critical denial of service vulnerability that can be exploited by remote attackers through carefully crafted transit traffic. The vulnerability manifests when the WAAS Express functionality processes malformed or specially constructed network packets that trigger unexpected behavior in the device's memory management system. The issue stems from insufficient input validation and memory handling within the WAAS Express component, which fails to properly sanitize incoming traffic before processing it through the acceleration service.
The technical exploitation of this vulnerability occurs when an attacker sends specifically crafted packets that cause the WAAS Express module to consume excessive memory resources or trigger a device reload. This behavior aligns with CWE-129, which addresses improper validation of input boundaries, and CWE-400, which covers unspecified resource management issues. The vulnerability can be leveraged to cause either gradual memory exhaustion that leads to system instability or immediate device restarts that result in complete service disruption. The attack vector is particularly concerning as it requires no authentication and can be executed from outside the network perimeter, making it accessible to any remote attacker who can reach the affected Cisco IOS devices.
The operational impact of CVE-2012-1314 extends beyond simple service disruption to potentially compromise network availability and business continuity. Organizations relying on WAAS Express for application acceleration and bandwidth optimization face significant risks when this vulnerability is exploited, as it can render critical network services unavailable. The memory consumption aspect of the vulnerability can lead to progressive degradation of device performance, while the device reload capability provides an immediate means of complete service interruption. This vulnerability affects a broad range of Cisco network equipment including routers and switches running the affected IOS versions, making it particularly dangerous for enterprise networks that depend on WAAS functionality for performance optimization.
Mitigation strategies for CVE-2012-1314 should prioritize immediate implementation of Cisco's recommended security patches and updates to IOS versions that address the WAAS Express vulnerability. Network administrators should also implement traffic filtering mechanisms to block suspicious packets that might trigger the vulnerability, utilizing access control lists and packet filtering rules to prevent malformed traffic from reaching the WAAS Express module. The ATT&CK framework categorizes this vulnerability under T1499, which covers Network Denial of Service, and T1566, which addresses credential harvesting through social engineering, though the latter is less directly applicable given the remote nature of the attack. Organizations should also consider implementing network segmentation and monitoring solutions to detect anomalous traffic patterns that might indicate exploitation attempts. Additionally, disabling the WAAS Express feature entirely when not required provides a definitive mitigation strategy, though this approach may impact network performance optimization capabilities that organizations rely upon for efficient bandwidth utilization.