CVE-2022-1069 in Secure Integration Server
Summary
by MITRE • 08/18/2022
A crafted HTTP packet with a large content-length header can create a denial-of-service condition in Softing Secure Integration Server V1.22.
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Analysis
by VulDB Data Team • 08/18/2022
The vulnerability identified as CVE-2022-1069 represents a critical denial-of-service weakness within the Softing Secure Integration Server version 1.22, specifically targeting the server's handling of HTTP protocol elements. This flaw manifests when the server receives a malformed HTTP packet containing an excessively large content-length header value, which can cause the system to become unresponsive or crash entirely. The issue stems from inadequate input validation mechanisms within the server's HTTP parsing logic, where the system fails to properly sanitize or limit the size of content-length headers before processing them. This vulnerability directly impacts the availability of the integration server, potentially disrupting critical industrial automation and secure communication processes that rely on this software component.
The technical exploitation of this vulnerability occurs through the manipulation of HTTP protocol headers, specifically targeting the content-length field which indicates the size of the message body in bytes. When a malicious actor sends a crafted HTTP request with an inflated content-length value, the Softing Secure Integration Server attempts to allocate memory resources proportional to this exaggerated size, leading to resource exhaustion or system instability. This behavior aligns with CWE-122, which describes improper restriction of operations within a limited memory buffer, and represents a classic example of a resource exhaustion attack vector. The vulnerability operates at the application layer of the network stack, making it particularly dangerous as it can be exploited remotely without requiring authentication or specialized privileges. The server's failure to implement reasonable bounds checking on header values creates a condition where the system becomes vulnerable to malicious input that can cause arbitrary code execution or complete service disruption.
The operational impact of CVE-2022-1069 extends beyond simple service interruption, potentially affecting industrial control systems and secure communication infrastructures that depend on the Softing Secure Integration Server for reliable operation. In environments where this software serves as a critical integration point for industrial automation protocols, the denial-of-service condition can lead to cascading failures throughout connected systems, particularly in scenarios involving real-time data processing or safety-critical operations. The vulnerability affects systems where the server processes HTTP traffic for configuration updates, data synchronization, or remote management functions, making it particularly concerning for operational technology environments that require high availability. Organizations implementing the affected software may experience unplanned downtime, loss of communication between systems, and potential safety risks in industrial settings where continuous operation is essential. The attack surface is broad given that HTTP-based communication is prevalent in modern industrial integration architectures, and the vulnerability can be exploited through various attack vectors including web-based management interfaces or API endpoints that utilize the affected server component.
Mitigation strategies for CVE-2022-1069 should focus on implementing robust input validation and rate limiting mechanisms within the Softing Secure Integration Server configuration. Organizations should consider applying the vendor-provided security patches or updates that address the specific memory handling issues in the HTTP parsing component. Network-level protections including firewalls and intrusion detection systems can be configured to monitor and filter anomalous content-length header values, while implementing proper resource limits and memory allocation controls within the server environment can help prevent complete system exhaustion. Additionally, administrators should conduct thorough network monitoring to detect unusual traffic patterns that may indicate exploitation attempts, and implement proper access controls to limit exposure of the vulnerable server components. The implementation of application firewalls or web application security measures can provide additional layers of protection by validating HTTP headers before they reach the vulnerable server components. Organizations should also establish incident response procedures specifically addressing denial-of-service conditions in industrial control systems, ensuring that recovery procedures are well-documented and tested. Regular security assessments and vulnerability scanning of industrial control systems can help identify other potential weaknesses that may compound the risks associated with this vulnerability, while adherence to cybersecurity frameworks such as NIST SP 800-82 for industrial control systems provides guidance for comprehensive security management.