CVE-2007-2886 in Meridian CS 1000
Summary
by MITRE
Unspecified vulnerability in the Nortel CS 1000 M media card in Enterprise VoIP-Core-CS 1000E, 1000M, and 1000S 04.50W before 20070523 in Meridian/CS 1000 allows remote attackers to cause a denial of service (card hang) via unspecified vectors.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 06/01/2007
The vulnerability identified as CVE-2007-2886 represents a critical security flaw within the Nortel CS 1000 M media card operating within the Enterprise VoIP-Core-CS 1000E, 1000M, and 1000S systems. This issue affects software versions prior to 20070523 and specifically targets the Meridian/CS 1000 platform, which serves as a foundational component for enterprise voice over internet protocol communications. The vulnerability manifests as an unspecified weakness that can be exploited by remote attackers to trigger a denial of service condition, resulting in the media card becoming unresponsive or entering a hung state.
The technical nature of this vulnerability places it within the realm of remote code execution and system stability compromise, as attackers can leverage unspecified attack vectors to cause the media card to hang, effectively disrupting voice communication services. This type of vulnerability typically stems from inadequate input validation, buffer overflow conditions, or improper error handling within the media card's firmware or software components. The unspecified nature of the attack vectors suggests that multiple pathways may exist for exploitation, making the vulnerability particularly concerning as it could be leveraged through various network-based attack methods.
From an operational impact perspective, this vulnerability poses significant risk to enterprise communication infrastructures that rely on the Nortel CS 1000 platform for their voice services. A successful exploitation could result in complete disruption of voice communication capabilities across affected systems, potentially impacting business operations, emergency services, and critical communication channels. The denial of service condition affects not just individual users but entire communication networks, as the media card failure can cascade through the system architecture. This vulnerability directly impacts the availability aspect of the CIA triad and represents a serious concern for organizations depending on reliable voice communication systems.
Organizations affected by this vulnerability should implement immediate mitigations including applying the vendor-supplied patches released after the 20070523 date, which would address the underlying issues in the media card firmware. Network segmentation strategies should be employed to limit exposure of affected systems to external networks, while implementing robust monitoring solutions to detect potential exploitation attempts. The vulnerability aligns with CWE-119, which addresses improper access to memory, and may relate to ATT&CK techniques involving privilege escalation and denial of service operations. Regular vulnerability assessments and security updates should be maintained to prevent similar issues from emerging in the future, particularly given the long lifespan of enterprise communication systems. Organizations should also consider implementing redundant communication paths and backup systems to maintain operational continuity during potential exploitation events.