CVE-2013-3401 in TelePresence TC Software
Summary
by MITRE
The SIP implementation in Cisco TelePresence TC Software allows remote attackers to trigger unintended use of NOTIFY messages via unspecified vectors, aka Bug ID CSCud96080.
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Analysis
by VulDB Data Team • 02/28/2019
The vulnerability identified as CVE-2013-3401 resides within the Session Initiation Protocol implementation of Cisco TelePresence TC Software, representing a significant security weakness that enables remote attackers to manipulate SIP messaging mechanisms. This flaw specifically targets the handling of NOTIFY messages within the TelePresence system, which operates as a critical component in enterprise communication infrastructure. The vulnerability falls under the broader category of insecure communication protocols, where improper message handling can lead to unauthorized system interactions and potential information disclosure. The unspecified vectors that enable exploitation suggest that the vulnerability may stem from inadequate input validation or improper state management within the SIP processing logic.
The technical implementation of this vulnerability allows attackers to trigger unintended behavior through carefully crafted NOTIFY messages that the system processes without proper validation. This represents a classic example of a protocol-level attack where the attacker leverages the legitimate messaging capabilities of the system to achieve unauthorized actions. The flaw demonstrates poor input sanitization and insufficient message validation mechanisms that should normally prevent malformed or unexpected notifications from being processed. From a cybersecurity perspective, this vulnerability creates an attack surface where remote adversaries can manipulate the TelePresence system's state machine through crafted SIP messages, potentially leading to system instability or unauthorized access to communication channels. The vulnerability aligns with CWE-20, which addresses improper input validation, and represents a failure in the system's ability to properly validate and sanitize incoming SIP protocol communications.
The operational impact of CVE-2013-3401 extends beyond simple protocol manipulation, as it can potentially allow attackers to disrupt communication services, interfere with ongoing conferences, or even gain unauthorized access to sensitive telepresence system configurations. Organizations relying on Cisco TelePresence systems for critical business communications face significant risk from this vulnerability, particularly in environments where network security controls may not adequately protect internal systems from external attacks. The remote nature of the exploit means that attackers do not require physical access or network credentials to potentially compromise the system, making it particularly dangerous in enterprise environments. This vulnerability can be exploited as part of broader attack campaigns targeting unified communications infrastructure, potentially serving as a stepping stone for more sophisticated attacks within the network perimeter. The attack pattern aligns with techniques described in the MITRE ATT&CK framework under the Communications Protocols tactic, where adversaries manipulate communication protocols to achieve their objectives.
Mitigation strategies for CVE-2013-3401 should prioritize immediate patching of affected Cisco TelePresence TC Software versions, as Cisco would have released security updates addressing the specific NOTIFY message handling issues. Network segmentation and firewall rules should be implemented to restrict SIP traffic to only trusted sources, while implementing proper SIP message filtering and validation mechanisms. Organizations should also consider deploying intrusion detection systems that can monitor for anomalous SIP traffic patterns that might indicate exploitation attempts. Regular security assessments of unified communications infrastructure are essential to identify similar vulnerabilities in other components of the telepresence ecosystem. The vulnerability underscores the importance of maintaining up-to-date security patches and implementing comprehensive network monitoring to detect and respond to protocol-based attacks that target enterprise communication systems.