CVE-2012-5416 in Unified MeetingPlace
Summary
by MITRE
Buffer overflow in Cisco Unified MeetingPlace Web Conferencing before 7.1MR1 Patch 1, 8.0 before 8.0MR1 Patch 1, and 8.5 before 8.5MR3 allows remote attackers to cause a denial of service (daemon hang) via unspecified parameters in a POST request, aka Bug ID CSCua66341.
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Analysis
by VulDB Data Team • 04/20/2017
The vulnerability identified as CVE-2012-5416 represents a critical buffer overflow flaw affecting Cisco Unified MeetingPlace Web Conferencing software across multiple versions including 7.1MR1, 8.0MR1, and 8.5MR3. This security weakness resides in the web conferencing daemon's handling of POST requests, where improper input validation allows malicious actors to exploit memory management issues. The vulnerability specifically targets the software's ability to process unspecified parameters within HTTP POST requests, creating a condition where attacker-controlled data can overwrite adjacent memory locations. According to the Cisco bug ID CSCua66341, this flaw manifests as a daemon hang rather than arbitrary code execution, though the impact remains severe enough to constitute a denial of service condition that disrupts legitimate conference services.
The technical implementation of this buffer overflow stems from inadequate bounds checking within the web conferencing daemon's request processing logic. When the system receives a POST request containing malformed or oversized parameter values, the application fails to properly validate input lengths against allocated buffer sizes. This fundamental flaw in input sanitization creates an exploitable condition where an attacker can craft malicious requests that exceed the predetermined buffer limits, causing memory corruption and subsequent daemon instability. The vulnerability aligns with CWE-121, which categorizes buffer overflow conditions where insufficient space allocation leads to memory corruption, and also relates to CWE-125, which addresses out-of-bounds read conditions that can result from improper input validation. The attack vector operates through network-based exploitation, requiring only that an attacker can submit a crafted POST request to the vulnerable web conferencing service.
The operational impact of CVE-2012-5416 extends beyond simple service disruption to encompass broader business continuity concerns for organizations relying on Cisco Unified MeetingPlace for collaborative operations. When the daemon hangs due to buffer overflow exploitation, conference participants lose access to critical meeting functionality, potentially causing significant productivity losses and communication breakdowns. The vulnerability affects organizations using the affected software versions, creating a window of opportunity for attackers to disrupt business operations during critical meetings or collaborative sessions. From an attacker perspective, this vulnerability fits within the ATT&CK framework under the T1499 category of Network Denial of Service, specifically targeting the T1499.004 subcategory for Network Denial of Service through resource exhaustion or daemon corruption. Organizations may face reputational damage from service interruptions, while the attack pattern represents a common exploitation strategy that leverages input validation weaknesses in web applications to achieve denial of service outcomes.
Mitigation strategies for CVE-2012-5416 should prioritize immediate patch deployment to the affected Cisco Unified MeetingPlace versions, specifically implementing the security updates released in patches 7.1MR1, 8.0MR1, and 8.5MR3. Network administrators should also consider implementing rate limiting and input validation measures at network boundaries to reduce the effectiveness of exploitation attempts. The vulnerability demonstrates the importance of maintaining up-to-date security patches and implementing robust input validation controls across all web applications. Organizations should conduct thorough vulnerability assessments to identify all instances of the affected software within their environments and establish monitoring procedures to detect potential exploitation attempts. Additionally, implementing intrusion detection systems with signature-based detection for known malicious POST request patterns can provide early warning capabilities. The remediation process should include comprehensive testing of patches in controlled environments before widespread deployment to ensure compatibility with existing conference infrastructure. Security teams must also consider implementing network segmentation strategies to limit exposure of the vulnerable web conferencing services to external threat actors.