CVE-2014-2386 in openSUSE
Summary
by MITRE
Multiple off-by-one errors in Icinga, possibly 1.10.2 and earlier, allow remote attackers to cause a denial of service (crash) via unspecified vectors to the (1) display_nav_table, (2) print_export_link, (3) page_num_selector, or (4) page_limit_selector function in cgi/cgiutils.c or (5) status_page_num_selector function in cgi/status.c, which triggers a stack-based buffer overflow.
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Analysis
by VulDB Data Team • 05/09/2026
The vulnerability identified as CVE-2014-2386 represents a critical security flaw in Icinga monitoring software that affects versions 1.10.2 and earlier. This vulnerability stems from multiple off-by-one errors within the application's core CGI utilities, specifically targeting functions responsible for displaying navigation tables and handling pagination controls. The flaw exists in the cgiutils.c and status.c files where improper boundary checks allow attackers to manipulate input parameters that control display elements and pagination functionality. These off-by-one errors create conditions where memory access exceeds allocated buffer boundaries, leading to stack-based buffer overflow conditions that can compromise the application's stability and availability.
The technical exploitation of this vulnerability occurs through remote attack vectors that manipulate the parameters passed to the affected functions. When attackers provide carefully crafted inputs to the display_nav_table, print_export_link, page_num_selector, page_limit_selector, or status_page_num_selector functions, the off-by-one errors cause memory corruption that results in application crashes. The stack-based buffer overflow occurs because the application fails to properly validate input lengths against allocated buffer sizes, allowing attackers to overwrite adjacent stack memory locations. This type of vulnerability falls under CWE-121 Stack-based Buffer Overflow, which is classified as a critical weakness in software security practices. The vulnerability demonstrates poor input validation and memory management practices that are fundamental to secure coding standards.
The operational impact of this vulnerability extends beyond simple service disruption to potentially enable more sophisticated attack scenarios. Remote attackers can leverage this flaw to perform denial of service attacks that systematically crash the Icinga monitoring service, rendering critical system monitoring unavailable to administrators. This compromises the organization's ability to monitor system health and detect security incidents, creating a window of opportunity for additional attacks. The vulnerability affects the core monitoring functionality, which means that organizations relying on Icinga for system oversight may experience complete loss of monitoring capabilities. The attack surface is particularly concerning because it targets functions that are frequently accessed during normal monitoring operations, making the vulnerability exploitable through routine monitoring activities.
Mitigation strategies for CVE-2014-2386 should prioritize immediate patching of affected Icinga installations to version 1.10.3 or later, where the off-by-one errors have been corrected through proper boundary checking implementations. Organizations should implement network segmentation to limit access to Icinga web interfaces to authorized personnel only, reducing the attack surface available to potential remote attackers. Input validation controls should be enhanced at the application level to ensure that all parameters passed to the affected functions are properly bounded and validated before processing. Security monitoring should be implemented to detect unusual patterns of access to the vulnerable functions, which could indicate attempted exploitation. Additionally, organizations should conduct thorough vulnerability assessments of their monitoring infrastructure to identify other potential buffer overflow vulnerabilities that may exist in similar components. The remediation approach should align with ATT&CK technique T1499.004 for network denial of service, emphasizing the importance of maintaining secure application code and implementing proper memory management practices to prevent such vulnerabilities from occurring in the first place.